Posts filed under ‘Data’

Crime and Recession – A Conservative Perspective

February 17, 2010 (posted by K-Sol.)

In a recent Wall Street Journal article Heather Mac Donald, of the conservative think-tank “The Manhattan Institute”, claims that poverty, racism, and social injustice are not root-causes of crime. Mac Donald argues that under conventional left-wing wisdom, crime should be increasing due to the current economic recession. Mac Donald cites 2009 FBI crime statistics that reportedly show national decreases in crime. She writes, “The recession of 2008-09 has undercut one of the most destructive social theories that came out of the 1960s: the idea that the root cause of crime lies in income inequality and social injustice.”

Mac Donald criticizes government social service programs, including “after-school programs, social workers, and summer jobs”, suggesting that they are not effective in decreasing crime.

Is Mac Donald’s analysis too simplistic? Does a decrease in some crimes really demonstrate that crime is not linked to poverty, race, or social injustice? Even if one were to accept Mac Donald’s arguments, is it really better for individuals and society for the government to eliminate needed social service programs?

Study supports Black renters’ case against Antioch

September 15, 2009 (posted by Big Tuna)

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The San Francisco Chronicle provided an update in an article today on a case involving minority residents of Section 8 housing in Antioch, California, that was first written up by the Race Equity Project E-Newsletter a year ago.  The subject of E-Newsletter 3.6 was the intersection of criminal law, race, and poverty law practice.  The specific case was described in the article titled, “Targeted Enforcement of Section 8 Participants in Antioch.”  The case, brought by Bay Area Legal Aid and Public Advocates, Inc. on behalf of primarily African-American Section 8 tenants in the city of Antioch, alleged that the City’s special police enforcement division, called, the “Community Action Team” (CAT), had systematically targeted Section 8 tenants for police enforcement (“over-policing”) in an effort to drive those tenants out of Antioch and, in so doing, had violated those tenants’ civil rights.

The SF Chronicle reports that criminologist Barry Krisberg’s recent study confirmed that “Antioch’s police Community Action Team … has disproportionately concentrated on subsidized Section 8 housing for the poor, and even more so on black tenants.”

The CAT website says that the CAT’s goal is to protect the right it asserts Antioch residents have “to feel safe in their homes and neighborhoods…“  The purported right to be free from fear has yet to be codified in California law.  Based on what Social Cognition science tells us about how our mind’s implicit associations are primed to be unconsciously fearful of, especially, people of African descent by such things as watching the local evening news (see Jerry Kang’s article, “Trojan Horses of Race“), residents of Antioch, Section 8 tenants included, are likely caught in a vicious cycle of unfounded fears confirmed, in many of their minds, by the experience and reporting of targeted enforcement of low-income, African-American households.  Maybe what is needed, at least in part, is some anti-bias training for fearful residents of Antioch and its police officers in order to raise the impact of unconcious biases to the conscious level where they may be dealt with openly and Constitutionally.

Create KML files from TigerLine data and tables for use with Google Earth and other online mapping applications

June 1, 2009 (posted by ElektroMoose)

Professor Bruce Ralston, the programmer who created my favorite 2000 Census data extraction tool (SF3toTable Pro), just released AFF Mapper, a freeware program that enables users to create KML files (files that can be used with Google Earth and other online mapping applications) from Tigerline data and tables available through American FactFinder. We haven’t tried the software yet but, based on Professor Ralston’s previous work, our expectations are high.

Launch of data.gov

June 1, 2009 (posted by BeenieMum)

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Data-philes are abuzz with the recent launch of Data.gov a website created “to increase public access to high value, machine readable datasets generated by the Executive Branch of the Federal Government” according to the site description. Users can search the vast Data.gov catalog by category (Income, Expenditures, Poverty and Wealth; Law Enforcement Court and Prisons, etc.) and/or agency (Centers for Disease Control and Prevention or the Department of Defense, for example). The site offers two ways to access data: 1) the raw data catalog consisting of instant view/download of platform-independent, machine readable datasets in a variety of formats, and 2) a Tool Catalog with application-driven access to Federal data with hyperlinks and featuring data-mining and extraction tools and other services.

Feeling somewhat befuddled by these descriptions? No worries if you are, like me, technically-challenged. Using the handy Data.gov tutorial, I was able to determine with a five minute search that between 1999 and 2004, the lung cancer mortality rate in California for every 100,000 African-Americans was 55, significantly higher than for Whites at 44 per 100,000 (noting that this last figure probably includes Latinos because of the way in which the census categories Hispanics or Latinos). Incidentally, the link that Data.gov sent me to for these statistics, the CDC’s Wide-ranging Online Data for Epidemiological Research or WONDER, is a fantastic resource in its own right. Finally, Data.gov’s authors describe the website as a work in progress and invite users to suggest additional data sets and site enhancements to make the site an even more comprehensive tool for access to federal government data.

  • Filed under: Data
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Disparate impact on graduation rates of students of color caused by the California High School Exit Exam

April 22, 2009 (posted by Ingolf the Schnevah)

The Sacramento Bee posted two articles today, Dan Walters: Stanford study of exit exam shows fallacy and Some graduation rates worse with high school exit exam, on how the California High School Exit Exam instituted in 2006 has a disproportionate effect on graduation rates of minorities and young women. These findings are based on a study by the Institute for Research on Education Policy & Practice at Stanford University (IREPP) , “the Stanford study looked at graduation rates for students who stayed in school all four years – both before and after California initiated the exit exam. Since the test became a requirement, the study found, a disproportionate number of those who didn’t graduate because of the test are minorities and girls.” Interestingly, the study attributes these findings to what the IREPP researches call the “stereotype threat.” Essentially, this threat is defined as the extra stress on nonwhite and female students to do well on these exams, so as not to confirm negative stereotypes about their group.

Presentation on the use of GIS in advocacy at the UC Davis Law School

April 16, 2009 (posted by ElektroMoose)

On April 13, 2009, the Race Equity Project gave a presentation on the use of mapping and GIS in public interest advocacy at the UC Davis Law School. Clicking on the slide show image below will take you to the REP’s Presentation page where you can view this presentation.

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Poverty and gay, lesbian, and bisexual couples of color

April 15, 2009 (posted by ElektroMoose)

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On March 20, 2009, the Williams Institute of UCLA Law released a study demonstrating  that gay, lesbian, and bisexual (LGB) couples of color experience markedly higher rates of poverty then heterosexual and White LGB couples. “For example, white gay men in same-sex couples have poverty rates of 2.7%, compared to 4.5% of Asian or Pacific Islander, 14.4% of black and 19.1% of Native American gay men. While just under 6% (5.7%) of non-Hispanic lesbians are poor, that rate is more than tripled (19.1%) for Hispanic lesbians in couples.” Take a look at the complete study.

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Striking disparities in graduation rates for Californian Latino and Black high school students

March 6, 2009 (posted by ElektroMoose)

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The California Dropout Research Project,  a project based at the the UC Santa Barbara Gevitz School of Education, recently released a report that indicates Californian Latino and Black high school students graduate with alarmingly low numbers when compared to Asian and White students.

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“Graduation rates for African American and Hispanic students are much lower at 60%, or more than 20 percentage points below the rate for Asian and White students.” In case you dislike data without proposed solutions, the California Dropout Research Project released a guide entitled Solving California’s Drop Crisis in 2008.

Communities in Crisis: Race and Mortgage Lending in the Twin Cities

February 27, 2009 (posted by Simmy)

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A recently published report by the Institute of Race and Poverty, Communities in Crisis:  Race and Mortgage Lending in the Twin Cities, examines the history of the home ownership in America through the lens of race and poverty.   The report substantiates that even when controlling for income and FICO scores that people of color are denied prime mortgages at much higher rates.

“The denial rate for blacks with incomes above $157,000 was 25%, while it was just 11% for Whites making less than $39,250.”

The report is  accessible despite going into  detail about the prime and sub-prime mortgage lending systems.   An interesting finding is that the growth in home ownership in communities of color started well before the emergence of sub-prime lenders in 2003, which supports that an increase in home ownership in our communities can be sustained independent of the sub-prime market.

Using GIS for advocacy

February 25, 2009 (posted by Ingolf the Schnevah)

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The Use of Geographic Information Systems in Poverty Advocacy is the cover article in this month’s Clearinghouse Review. The authors are Jason Reece, a senior researcher at the Kirwin Institute for the Study of Race and Ethnicity and (drum roll, please) our own Eric Schultheis, principal editor and GIS guru at LSNC’s Race Equity Project. (Looking for more about GIS? Check out LSNC’s GIS Mapping Resources and Statistics | Data pages and the REP’s Mapping Race and Data|Demographics pages.)

Historical Census data and bounds – 1790 to 2000

February 4, 2009 (posted by ElektroMoose)

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Obtaining historical census data and boundary files is a huge pain but luckily it just got a whole lot easier. The National Historical Geographic Information System (NHGIS)  “provides, free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2000. ”

NHGIS will be realigning historical bounds to 2010 bounds (once those bounds are released) over the next few years. The wealth of data and shp files makes this a must stop for data hounds searching for free resources.  For those of you without desktop GIS capacities, NHGIS has partnered with Social Explorer to provide any one with an internet connection the ability to visualize and analyze the historical Census data they provide.

Take a look at these articles about NHGIS:

Evaluating Client Access to Proposed Service Sites

January 31, 2009 (posted by ElektroMoose)

When faced with multiple site location possibilities or with potential site closures, one important question to answer is the level of client access using public transportation to the various siting options. For instance, siting a public health clinic several miles from the nearest public transportation access point will likely preclude clients without private vehicles from accessing the services. Similarly, if you are facing proposed site reductions, you may want to evaluate access to each of the possible site closures to make sure that you advocate that the site with the highest level of access remain open.

The days of wading through public transportation schedules and transit station lists to determine site access are over.* Let me introduce you to Google Transit. Google Transit allows you to determine whether travel between two locations is possible using public transportation. It also gives you estimated travel time, travel cost, and the ability to search travel possibilities based on the time of the day.

The point to point feature limits your ability to determine overall accessibility. However, Google Transit is particularly useful if you want to evaluate access to a site from a series of set locations. For instance, let’s assume that a city is closing a public health clinic, a clinic that is primarily accessed by homeless persons. You could use Google Transit to determine public transit access to the remaining clinic locations by determining travel routs to the remaining clinics from area shelters and encampments.  You could also use Google Transit to determine the affect of a proposed clinic closure on travel time to access services. Take a look at a map we created using Google Transit and ArcView to depict this hypothetical scenario.

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* Authors note: Google Transit covers over 75 US areas including cities, counties, metropolitan areas, and states from Atlanta to Walla Walla. Take a look if you area is covered.

Dropping 0s when using FIPS codes

January 12, 2009 (posted by ElektroMoose)

I hate it when I’m trying to link a dbf to a shp file and, while I’m working with the data, Excel decides to drop the leading zeros in the FIPS code making it impossible to link the demographic data to the correct geography. One possible cause of this “dropping zeros” problem is that Excel has formated the cells containing the FIPS data using its default settings. I often remedy this issue by changing the cell formatting for the FIPS entries to a number custom setting with five zeros. Another solution is to convert the FIPS numbers into string data. Here is a great tutorial on how to do this.

3-year American Community Survey data available for areas and cities at least 20,000 persons in size

December 9, 2008 (posted by ElektroMoose)

Tired of relying on 2000 Census data but hesitant to use ACS data due to its high margins of error? Thankfully the Census Bureau just released 3-year data for cities and places at least 20,000 persons in size. This data has a significantly lower margin of error then the normal 1-year ACS survey data.

“New data released today by the U.S. Census Bureau give more than 2,500 midsized counties, cities and towns nationwide (those with populations between 20,000 and 64,999) their first statistical “portrait” since the 2000 Census on a wide range of key socioeconomic and housing topics.

These are the first American Community Survey (ACS) estimates that combine three years of survey responses (2005-2007) to produce data. The technique makes it possible to release a new set of multiyear estimates annually for smaller geographic areas. The three-year data can produce
estimates for areas with populations as small as 20,000.”

“The 2005-2007 ACS estimates are based on three years of data collected nationwide from about 250,000 addresses per month. In addition, approximately 20,000 group quarters across the United States are surveyed each year, comprising approximately 200,000 residents annually.

The population threshold for which geographic areas have three-year estimates available is 20,000. For nation, states, counties, cities, and towns, the estimated population used to satisfy that threshold is the July
1, 2007, Census Bureau Population Estimates. For other areas, the 2005–2007 ACS three-year estimates of total population are used. For example, since the Census Bureau’s Population Estimates are not available
for school districts, three-year ACS estimates of total population are used to determine if a school district meets the 20,000 population threshold.

As is the case with all surveys, statistics from sample surveys are subject to sampling and nonsampling error.”

Excerpt quoted from Census Bureau Public News Alert issued on December 9, 2008.

Presentations on mapping, data, and databases at the 2008 NLADA Annual Conference

November 25, 2008 (posted by ElektroMoose)

We were excited to see a slew of presentations on applied mapping and data analysis in poverty advocacy at the 2008 NLADA Annual Conference. The REP participated in two mapping/data sessions: Using Mapping, Data, and Databases for Advocacy and Program Improvement: An Introduction; Using Mapping, Data, and Databases (II): Developing and Implementing Mapping and Data Capacities.

The presenters for the first session were Eric Schultheis (aka ElectroMoose) from the Race Equity Project, Ann Joyner from the Cedar Grove Institute for Sustainable Communities, and Julie Aguilar Rogado from the Health Rights Hotline. The presenters for the second session were Eric Schultheis, Ann Joyner, and Jason Reece from the Kirwan Institute on the Study of Race and Ethnicity.

Eric Schultheis’s presentation slides are available below in JPEG format as self-extracting ZIP files:

(If you use images or content from these slides please provide the following attribution: The Race Equity Project, Legal Services of Northern California, www.lsnc.net/equity)

DataPlace does it again

October 30, 2008 (posted by ElektroMoose)

DataPlace unveiled its new Neighborhood Metrics system today. Neighborhood Metrics allows users to “create custom metrics (or indices) by aggregating existing dataset indicators.” Lets say you want to identify neighborhoods of low-income persons at high risk for foreclosure. You could create a metric that “combined high interest loans for both refinance and home purchase, to low-income borrowers in 2006″ and then map the metric. Instead of dealing with multiple layers, DataPlace now allows you to create and display a single easy to understand layer based on the user defined metric. We still haven’t gotten a chance to really explore Neighborhood Metrics but, at least at first glance, it seems to have some real promise.

Stuck with stats in PDF format when you need the stats as an XLS file?

October 20, 2008 (posted by ElektroMoose)

Here’s the situation: you sent out a bunch of FOIA or discovery requests and you get pages of data in PDF format.  After dreaming of federal or state regulations requiring data to be sent in XLS or DBF format,  what will you do? Fear not, we recently found a free web application that will save you from manually copying the data into an Excel spreadsheet.  Zamzar allows you to convert PDFs into a variety of more useful formats. If you need to convert a PDF into XLS follow the following steps: (1) convert the file into a TXT file using Zamzar and (2) import that text file into Excel (you will probably want to select a “fixed width” import if the data in the original PDF was in columns). Viola! It’s that easy. (Although probably not worth mentioning, if you need the data in DBF format for use with GIS software, simply save the XLS file as a DBF in Excel.)

A major step forward for online mapping

August 22, 2008 (posted by ElektroMoose)

The REP has been a big fan of online mapping applications for some time now. How could anyone be against user-friendly applications that allow advocates to document the variety of socio-economic issues facing low-income households? One drawback, however, to these applications has been a limited set of mappable indicators. It appears that the folks at KnowledgePlex have made some serious strides to solving this problem.
KnowledgePlex just launched their new beta version of DataPlace. DataPlace was already a wonderful mapping application. The new version is even better! We are still playing with the beta but users will be able to map almost 4,000 different indicators once the new version is fully functional. Wow!

A case study of poverty advocacy and GIS

August 7, 2008 (posted by ElektroMoose)

Is GIS an effective advocacy tool or is it just hype? You probably already know how the REP will answer that question. We believe that GIS and data analysis can be used as an amazingly effective advocacy tool. Not only does GIS allow advocates to capture and demonstrate the spatial component of poverty but GIS and data analysis offer advocates a method to capture the rare ground of being perceived as objective. positions.

We’ve noticed, however, that there is a dearth of examples of how GIS has been used to support advocacy projects. There is also precious little discussion on how design choices are critical to effective “persuasive mapping.” Most poverty attorneys have no problem agonizing over word choice but we rarely extend the same considerations to map design.

In an effort to remedy these problems, we have a spanking-new application of GIS in poverty advocacy to share with you.

The Stage Is Set

In California, county’s are required to provide “last resort” medical services to indigent residents. Cal. Welf. & Inst. Code § 17000. Sacramento County provides these services via the County Medically Indigent Services Program (“CMSISP”). Recently, Sacramento County proposed severe cuts to CMISP. Pursuant to state law, the County was required to provide a public hearing on the proposed reductions with fourteen days prior notice. Cal. Health & Safety § 1442.5. The County proposed cutting CMISP by 52.7 full-time employees. Several of the positions proposed for elimination were RN and public health nurse position. Interested in a complete listing of the proposed reductions? Take a look a look at the proposed reductions.

The Maps

The following maps were submitted to the Board of Supervisors with the Race Equity Project’s written statements regarding the proposed reductions. Several of the maps were also presented to the Board during the Race Equity Project’s oral testimony.

Map ImageThis map depicts the locations of the proposed cuts, the proposed staff reductions, and describes the proposed reductions. The map was purposefully designed to look crowded with call-out boxes describing describing the proposed reductions to highlight the scope and breadth of the proposed cuts (i.e. there are so many cuts that text descriptions of the cuts fill the entire map).

Map ImageThis map depicts the CMISP eligible population within the City of Sacramento and the current location of CMISP clinics. One dot equals one CMISP eligible person. The map was designed to highlight the large number of CMISP service consumers in the city. To accomplish this purpose we used a one to one relationship between dots and CMISP eligible persons and a large dot size and choose a dot color that was visually overpowering thus making the dots the fist thing you notice when you see the map.
Map ImageThis map was designed to highlight the disparate impact of proposed reductions at a specific clinic would have on persons with limited English proficiency. The color scheme for the two categories of persons (i.e. the dots) was chosen to highlight the category of limited English proficient persons.
Map ImageThis map depicts the CMISP eligible population by race/ethnicity (White or Of Color). The dot color scheme was chosen to accentuate the CMISP eligible population of color.
Map ImageThis map depicts the CMISP eligible population that resides in proximity to three CMISP clinics where reductions were proposed. The dot color scheme was chosen to accentuate the CMISP eligible population of color and the disparate impact of the proposed reductions.
Map ImageThis map depicts the CMISP eligible population that resides in proximity to a single CMISP clinics were reductions were proposed. The dot color scheme was chosen to accentuate the CMISP eligible population of color and the disparate impact of the proposed reductions.
Map ImageThis map depict the the difference in expected travel time to receive medical services if a specific CMISP clinic was closed as proposed. The location of the “fictional” CMISP client was obtained from actual CMISP client records. An intuitive color scheme was chosen to depict the routes. The route color scheme (green and red) also suggests the “goodness”/undesirability of a particular route.
Throughout these maps we attempted to maintain a consistent design template while simultaneously ensuring that maps depicting different phenomena (for instance, language spoken and race) were distinguishable from each other. Data source information was also included in each map as was basic information regarding what the map depicted and statistical data regarding the projected disparate impact of the reductions.

All maps were produced by Eric Schultheis, Staff Attorney, using desktop GIS software and Census data.

The Race Equity Project was able to design and produce these maps in under ten days. We believe that the unpredictable and often fast-paced nature of poverty advocacy and the varied types of poverty advocacy scenarios where maps can be used argue in favor of developing in-house GIS capacity. Absent in-house capacity, it is, at best, questionable whether the Race Equity Project could have used GIS and maps to advocate against the above-discussed healthcare reductions.

Maps used in support of the Plaintiff’s argument in Kennedy et al. v. City of Zanesville, et al.

August 6, 2008 (posted by ElektroMoose)

This post was authored by Allan M. Parnell, Ph.D., Cedar Grove Institute for Sustainable Communities.

We were asked by Reed Colfax of Relman and Dane, PLLC to determine whether there was an association between race and access to public water services in the Coal Run area in Muskingum County, Ohio. The Coal Run area is just outside of Zanesville, Ohio. In particular, Mr. Colfax was interested in having the patterns mapped. My colleagues in this analysis were Ben Marsh, Professor of Geography and Environmental Studies at Bucknell University, and Ann Moss Joyner, my colleague at the Cedar Grove Institute of Sustainable Communities. The results of our analysis were shown in a set of maps shown to the jury.

Census data clearly were not going to be useful because of the small size of the neighborhood. The core of the neighborhood is in two census blocks, but census data was not helpful because of the scale and distribution of residents within the blocks. Within each block, the northern part is predominantly white and the southern part is predominantly non-white. One plaintiff lived in a third census block, and the residents on the north side of Adamsville Road are in a fourth census block. There was no clear way to use Census data to show the whether race is a factor in access to public water. I proposed a house-by-house analysis within the neighborhood.

We obtained public Geographic Information Systems (GIS) data from Muskingum County. The key data were the parcel data, which identified all occupied houses in the study areas, the location of water lines with dates of construction, Zanesville’s city limits, and the street locations. Relman and Dane obtained water billing data giving the addresses of all houses with public water service. I field-checked the parcel data confirming that each property identified in the parcel data was an occupied house. We also geocoded the location of the water plant.

We knew the race of plaintiffs, but we did not know the race of the residents in the other houses. I designed a short survey asking the number of residents, the race of each resident and how long they had lived at that address. Under my supervision, two employees of Relman and Dane went door-to-door collecting the household data. The survey took place over two days. If one resident in a household was non-white, the house was coded as non-white. In the very few cases where we were unable to speak to any resident, the house was coded as unknown. Using the public GIS data, the household survey information, the plaintiff information and the addresses of houses with billed water service, Ben Marsh built the GIS layers for the maps showing the clear pattern of racial discrimination. I wrote the expert report using the maps, the survey information, and information from the plaintiffs.

Reed Colfax and John Relman decided to build the maps before the jury, layer by layer, adding information to the base map, explaining where the information in each layer came from.

Image of Map One

Map 1 is the base map, showing the location of the Coal Run area relative to the city and the water plant and the roads.

Image of Map TwoMap 2 adds the location of public water lines as of the date when the case was filed.

Image of Map ThreeMap 3 adds the location of occupied houses, showing the proximity of these houses to water lines. Note, however, that having a water line in front of your house does not necessarily mean that you have public water.

Image of Map FourMap 4 shows which houses had billed water service. Note that one house south of the water lines had billed water service. This was an “special arrangement” made with a private line run to that house.

Image of Map FiveMap 5 introduces the race of the household with the water lines. The water line down Langen Lane clearly ends where non-white residences begin.

Image of Map SixMap 6 adds billed water service again (the dark blue dots) confirming that most non-white houses did not have public water while most white houses did have water service.

While we believe that color schemes should be intuitively obvious (and thus white and black make sense here), it is difficult to use true black and have any internal symbol (the dark blue dot meaning billed water service) show up well. Thus, to designate houses of minority residents, a dark orange or light brown might have been more informative. Regarding the maps as shown, the attorneys chose the color scheme of the houses to indicate race.

Map of Waterlines Extent

A final map shows how far the public water lines extended. Note the location of the Coal Run area in blue.

The defense used GIS to try and make the case that race did not affect who had water service and that some areas with African American residents had water service so there was no pattern of discrimination.

Defense Map

The defense map pictured left shows the Coal Run area and surrounding area. Census blocks are coded by the number of African American residents. Water lines are shown in blue. The defense expert argued that all residents of a census block had water if a water line intersected any part of the block. This is demonstrably false, and he had difficulty with this argument in his testimony. The defense expert also pointed to the census block southwest of the Coal Run area that borders I-70 with 34 African American residents.

I had examined the census data for the block and found that while there were 34 African American residents in 2000, there were no African American households. Individuals in the census are classified as living either in households or in group quarters, and the African American residents all lived in group quarters. And they were all elderly. Clearly, they live in a nursing home that is 88% white. The water line in question services a health care facility that had no residents (black or white) when it was built.

This post was authored by Allan M. Parnell, Ph.D., Cedar Grove Institute for Sustainable Communities.

Webmaster’s note: Plaintiffs in this case received a near 11 million dollar jury verdict (attorneys fees reserved).

An ode to the National Map

July 7, 2008 (posted by ElektroMoose)

It’s rare that I’m this excited about a data/GIS resource. It’s equally rare that someone creates an online data/GIS resource as bug-free and comprehensive as the National Map. The USGS has outdone themselves with this nifty application.

The application, at first glance, looks like a typical online map viewer with a slightly more-complicated-than-usual interface. Don’t be fooled…this application packs a real punch. We used National Map to download 1-meter DOQ imagery for use in an ongoing advocacy project. After a little tinkering, I selected the five block area I wanted the DOQ imagery for and began the download. Voila…twenty seconds later I had a GeoTIFF file with imagery of the selected area that is ready for use with ArcGIS.

The National Map offer a lot more than DOQs. Interested in topographic layers? LANDSAT7 imagery? Geology layers? Public land records layers? Transportation layers? National Map has you covered!

Lies, d*!ned lies, and statistics

May 2, 2008 (posted by ElektroMoose)

Mark Twain had it wrong. Data and statistics aren’t our enemies. In an effort to promote understanding between people and statistics, we want to share the following data resources with you:

United States Department of Agriculture – Economic Research Service

  • Site Summary: ERS conducts research in five major areas: (1) a competitive agricultural system; (2) a safe food supply; (3) a healthy, well-nourished population; (4) harmony between agriculture and the environment; (5) an enhanced quality of life for rural Americans

California Secretary of State – Reports of Registration

  • Site Summary: The California Secretary of State is responsible for producing a statistical reports detailing voter registration levels throughout California several times per year.
  • Suggested Uses: The data available here can help you measure and compare civic involvement in California communities.

Office of the Attorney General – State of California – Department of Justice

  • Site Summary: The California Attorney General collects, analyzes, and reports statistical data, which provide valid measures of crime and the criminal justice process to government and the citizens of California.
    This site contains more than 5,000 statistical tables, 59 reports, 29 publications, links to federal state, and local agency statistics, and links to other criminal statistics services.
  • Suggested Uses: Do you need arrest, domestic violence, or crime statistics for California? This is the place to go.

California Department of Corrections and Rehabilitation

  • Site Summary: The California Department of Corrections and Rehabilitation publishes a variety of reports that range from statistical summaries of its offender populations to evaluation research reports on innovative rehabilitative treatment programs. Of particular interest, Adult Operations (formerly CDC) Population Reports and Statistics contain extensive data on characteristics of the institution and parole populations, historical trends, summaries of population movements and parole outcome (including recidivism).
  • Suggested Uses: Looking for prison population or demographic reports? Searching for parole population or demographic reports? You will find them here.

Rural Healthcare Policy Council

  • Site Summary:The mission of the California Rural Health Policy Council (RHPC) is to formulate and establish rural health policy for the State of California and to provide a focal point for discussion of rural health issues within the California Health and Human Services Agency.
  • Suggested Uses: A good site for California rural population demographics and rural access to healthcare services information.

Office of Statewide Health Planning and Development

  • Site Summary: The Mission of Office of Statewide Health Planning and Development (OSHPD) is to promote healthcare accessibility through leadership in analyzing California’s healthcare infrastructure, promoting a diverse and competent healthcare workforce, providing information about healthcare outcomes, assuring the safety of buildings used in providing healthcare, insuring loans to encourage the development of healthcare facilities, and facilitating development of sustained capacity for communities to address local healthcare issues.

Department of Social Services

  • Site Summary: A comprehensive source for data and statistics on government benefits and their consumer populations

US Department of Transportation – Bureau of Transportation Statistics

  • Site Summary: This site provides comprehensive transportation statistics for geographic areas within the United States.
  • Suggested Uses: Access to public transportation and the effectiveness of the available public transportation is an effective indicator for issues ranging from access to medical care providers to environmental justice to access to employment opportunities.
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Latinos still the largest, fastest-growing minority

May 2, 2008 (posted by Lord Baron)

Latinos are the largest and fastest-growing minority group in the U.S. according to new estimates from the U.S. Census Bureau released Wednesday. Latinos account for 15% of the U.S. population, while people of color overall comprise 34%. As minority populations continue to grow in the U.S. it will be interesting to see how our society deals with race, racism, and racial distinctions in the law. It is going to be important for all of us to take a hard look at the role of domestic and international law in promoting and/or demolishing racism.

The Census Bureau answers the question, why does the Census Bureau need to ask about race on its questionnaires?

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New additions to our resources

May 1, 2008 (posted by ElektroMoose)

We made a few new additions to our resources today that we think you should take a look at:

The Kirwan Institute for the Study of Race and Ethnicity

HealthyCity

  • Site Summary: HealthyCity offers perhaps the most comprehensive access to community resources, demographic/health data, and cutting edge online GIS mapping technology that the REP has ever seen. For the time being, the site only offers geographic coverage for Los Angeles county. We hope that HealthyCity will be going statewide soon but until that time we will have to stew in our jealousy of the wonderful online mapping and data analysis tools that residents of the city of angels have access to.
  • Suggested Uses: If you have any mapping or data analysis needs related to Los Angeles county and you are not adverse to free, powerful, user-friendly online mapping and data analysis tools than HealthyCity is for you.

Mapping toxic chemical releases and Superfund sites (GIS Geek Alert)

April 4, 2008 (posted by ElektroMoose)

The REP recently had the opportunity to use EPA data in a mapping project for CORE. We wanted to share with you two nifty datasets that we found.

The first data set is the CERCLIS Superfund database. This database contains information on all NPL and non-NPL superfund sites in the country. Don’t bother trying to geocode the non-NPL sites as the street data is horrible. The REP suggests using the latitude and longitude data to locate the sites in the CERCLIS database. If the Superfund data leaves you a little confused, take advantage of the marvelous Superfund Info.Line (703-284-8214).

The second data set is the 2006 Toxic Release Inventory (TRI). This database includes every facility in the country that stores or releases toxic chemicals. Be aware that the six different dbf. files that compose the database can be a bit tricky to link as a single facility can have multiple entries. However, almost all the information that you need is in the first dbf. file. The REP recommends locating the facilities using latitude and longitude as the street data element is less than perfect.

The more things change, the more things stay the same.

March 14, 2008 (posted by ElektroMoose)

Good news on the 2010 Census front. The Bureau just published the final criteria for 2010 block groups in the Federal Register. Despite early rumors that the minimum population for a  block group would be raised, the Bureau decided to keep it at the 2000 level of 600 persons.

Moose, why are you sharing this inane information with us? Let me explain. First, data and mapping folks (myself included) need to know what to expect from the 2010 Census so that we can continue expose inequities. Second, an increase in the minimum population of a block group would have the effect of hiding small and insular communities (the communities we serve) so the news means that the Census will remain a uniquely powerful and complete data source for poverty advocates. Lastly, I figured we could all use some good news to mollify our sadness about the demise of the “long form.”

You say goodbye, we say hello (with some reservations)

February 5, 2008 (posted by ElektroMoose)

The demise of the census long form is common knowledge amongst Bureau fanboys and girls. However, we all could use a little more information about the big switch. For instance, did you know that the sample rate will change from 1 in 6 to 1 in 40? The current issue of ArcUser has a niffty article comparing the long form and the new ACS.

I also liked the article “Data Evaluation Tips: Buliding more accurate demographic databases.” Who isn’t interested in the pycnophulactic and dasymetric methods for converting data between different geographic levels? These methods’ scary names belie their practical applications in mapping poverty, race and opportunity.

GIS tutorial: identifying where low-income homeowners reside to direct foreclosure related services

January 10, 2008 (posted by ElektroMoose)

LSNC and other Legal Services corporations have been inundated with foreclosure related issues in recent months. As most poverty attorneys who have handled a foreclosure case will attest, prevention and early intervention are key to preventing foreclosure. Of course, before you can deliver education and community outreach to LSC eligible homeowners you need to know were they live. You also need to identify where populations of LSC eligible homeowners of color live. In many areas, due to the greater frequency of asset accumulation of Whites, if you do not include a separate analysis of race and ethnicity you will end up serving mostly White LSC eligible homeowners and excluding homeowners of color.

Lets conduct this analysis for Los Angeles County, California, using free online mapping software and free census data extraction tools so that any Legal Services program can replicate this process for their service area if it has a computer, Microsoft Office, and an internet connection. The online mapping software we will use is DataPlace and the free census extraction tool is GIStools. For purposes of space, this tutorial assumes that you have created an account with DataPlace and have downloaded the software and relevant datasets for GIStools.

First, we need to identify what Census data to use. Since we want to identify areas where foreclosure services outreach will have the greatest impact, we need to find the areas in Los Angeles county where there is a high percentage of homeownership and where there is a high percentage of LSC eligible clients. Since we also want to make sure that our outreach effectively reaches all LSC eligible homeowners we also want to find areas where there is a high percentage of homeowners of color and a high percentage of LSC eligible persons.

My suggestion is to use three datasets from the 2000 Census, SF3, to identify areas for possible outreach – P088 (Population by ratio of income to poverty), H007 (Tenure), and H013 (Tenure, White alone not Hispanic). Since we will be using DataPlace to map the data, we need to obtain the data at the Census Tract summary level (the smallest unit of Census geography that DataPlace can map). If I was going to map the data using ArcGIS, I would probably want to obtain the data at the Block Group summary level (the smallest unit of Census geography SF3 data is available at). Using GIStools extract the P088 and H013 data for California at the Census Tract summary level. Open the dbf. files (one for P088, one for H007, and one for H013) using Excel and copy and paste the all the data sets into one Excel spreadsheet (view example). Delete all rows for Census tracts not in Los Angeles county. You can tell which rows are for tracts in Los Angeles County by looking at the FIPSCO column. The first two numbers in the entry (“06″) represent the state code for California. The next three numbers are the FIPS codes for the various coutys in California. Los Angeles county’s FIPS code is “037.” Simply delete all rows where the value of the FIPSCO entry is not “06037″ (view example).

Second, we need to combine some of the data fields to simplify our spread sheet. Columns P088001 – 10 represent the various data fields of P088. Take a look at the Cenus Bureau’s technical documentation of the 2000 Census SF3 file to see what each of these columns represent. Since we want to know the count of person’s below 200% of the poverty level (our approximation of LSC client eligibility), we will create a new column (LSCPOP) that is the sum of P088002 – 09. The values of LSCPOP give us the count of potentially LSC services eligible persons for every Census tract in Los Angeles county (view example). Since it would also be helpful to know what percentage of the population is LSC eligible, lets create a new column (PERLSC) and use Excel to divide LSCPOP by P008001 giving use the percentage of the population that is LSC eligible for every Census tract in Los Angeles county (view example).

Columns H007001 -03 and H013001-03 represent the various data fields of H007 and H013 respectively. Take a look at the Cenus Bureau’s technical documentation of the 2000 Census SF3 file to see what each of these columns represent. We are going to use these columns to calculate the count of homeowners, the count of homeowners of color, and various percentages related to these categories.

The count of homeowners in a Census tract is simply H007002. We need to create a new column (PEROWN) to calculate the percentage of the population in each Census tract that is a homeowner. The values for this column are obtained by dividing H007002 by H007001 (view example).

The count of White homeowners is simply H013002. We need to calculate a new column (PERWHITE) to calculate the percentage of homeowners who are White in a Census tract. The values for this column are obtained by dividing H013002 by H007002 (view example).

We need to create a new column (HOCOLOR) to calculate the count of homeowners of color in a given Census tract. The values for this column are obtained by subtracting H013002 from H007002 (view example). We also need a new column (PERHOCO) to calculate the percentage of homeowners who are homeowners of color in a Census tract. The values for this column are obtained by dividing HOCOLOR by H007002 (view example).

Before we move on to step three, lets “clean up” our spread sheet by deleting columns that we no longer need. Before we do this, copy the whole spreadsheet and “Paste Spacial” it into a new spreadsheet. Paste “Values” only. Take a look at our the “cleaned up” spreadsheet showing the columns that we need to keep (view example). You should also replace all “#DIV/0!” with a null value and delete any extra sheets.

Third, we are going to identify the census tracts in Los Angeles county that will likely be the best areas to provide foreclosure related services to. We need to set the a criteria for identifying the tracts. What criteria you set is, of course, fairly subjective. When I create criteria like this I tend to select criteria that are restrictive enough to eliminate the majority of tracts but not so restrictive that I the pool of identified tracts is too small to be useful. For the purpose of this tutorial, our criteria will that tracts must have (1) 200 or more units that are owner occupied and (2) have a population that is 70% or more LSC eligible.

Screen Capture of Excel document

Create a new column (IMPACT). Using the Excel “If function” calculate whether each tract meets the criteria discussed above. Our “If Function” will read “=IF(PERLSC<.7,"",IF(H007002<200,"",1))"(view example). This formula will return a one in the IMPACT field if the tract meets our criteria and a null value if it does not.

We also need to set our criteria for identifying Census tracts in Los Angeles county that will likely be the best areas to provide foreclosure related services to homeowners of color. For the purpose of this tutorial, our criteria will that tracts must have (1) have 200 or more units that are occupied by an owner of color and (2) have a population that is 70% or more LSC eligible.

Screen Capture of Excel document

Create a new column (RIMPACT). Using the Excel “If function” calculate whether each tract meets the criteria discussed above. Our “If Function” will read “=IF(PERLSC<.7,"",IF(H0COLOR<200,"",1))"(view example). This formula will return a one in the RIMPACT field if the tract meets our criteria and a null value if it does not.

Before we move on to step four, lets “clean up” our spread sheet by deleting columns that we no longer need. Before we do this, copy the whole spreadsheet and “Paste Spacial” it into a new spreadsheet. Paste “Values” only. Take a look at our the “cleaned up” spreadsheet showing the columns that we need to keep. You only need to keep the SFID (tract identifier), IMPACT, and RIMPACT. Delete any blank sheets.In order to upload your data faster to DataPlace, you may want to delete all rows that have a null value for IMPACT and RIMPACT (view example).

LA Foreclosure Outreach Map

Fourth, lets map! Save the Excel file as “Foreclosure Data.” Logon to Dataplace. Select “My Dataplace.” Select “Create New Project.” Title your project and select “Save.” Select “Upload the file from your computer.” Browse to the “Foreclosure Data” and upload it. Select “Extract Tables.” Select “Create Dataset.” Enter the required information. You may leave the default dates or enter todays date. The source of the data is “SF3 2000 Census.”Select “OK.” Select the entry “SFID.” Unselect “Indicator” and select “Part of Region.” Select “Update.” Select “Generate Indicators.” (It will take a few minutes for DataPlace to generate the indicators…be patient.) Lastly, map the indicator of your choice (IMPACT or RIMPACT) and zoom in to the appropriate level so that you can see those Census Tracts were large populations of low-income homeowners live.

Note: Due to the demographics of Los Angeles county, there is almost no difference between IMPACT and RIMPACT. This may not be the case for your service area. For instance, in Del Norte County, California, there was no overlap between IMPACT and RIMPACT.
Next steps: Your maps let you know where you need to conduct outreach and community education based on actual data. This is a much sounder method than relying on your “gut feeling” regarding what communities are likely to need foreclosure related services. Nonetheless, you still need to put on your community lawyering hat, leave the office, and work with community groups; all the analysis in the world will not alleviate the hardships that the foreclosure crisis is creating for low-income homeowners.

Targeting the response to the fires – San Diego County

November 4, 2007 (posted by ElektroMoose)

Needs Assessment - San Diego (Part 1)

Needs Assessment - San Diego (Part 2)

We recently posted a “how to” on how legal aid organizations could determine where to direct resources in response to the fires in southern California. Having had some time to think things over, I’ve decided to revisit the issue. Take a look at our maps for San Diego County that identify and ranks areas for possible intervention based on whether the fire effected the area and the count and percentage of low-income persons in the area. I hope these two maps help programs with limited “in-house” mapping capacity. The maps were generated using MODIS satellite data and Census 2000. As always, please feel free to contact us with any questions.

Directing resources in response to the southern California fires

October 25, 2007 (posted by ElektroMoose)

A few months ago I conducted a GIS analysis of the Angora fires in South Lake Tahoe impact to help LSNC’s Mother Lode office determine its response to that fire. Last night I began to wonder if a similar analysis might help legal aid organizations in southern California direct there response to the rash of wildfires currently burning their.

The aim of this post is to walk readers through mapping the impact of the fires in southern California on low-income residents of San Diego County in the Romona area. The analysis will be simple and only look at whether the fire has burned areas populated by low-income families and individuals. This approach has numerous short-comings but I think it could serve as an initial starting point of inquiry and, perhaps equally importantly, it can be completed in a short time frame (under two hours).

First, downloaded a shape file of current fires in North America. This data is a point feature class and can be accessed directly using this link.

Second, update (define) the geographic coordinate system of the feature class and its metadata in ArcCatalog. Need a refresher on updating geographic coordinate systems? How about metadata?

Third, the point features represent the centroid of a one kilometer raster cell so if we create a 0.5 kilometer buffer around the points the points we will get a rough approximation of the burn area. Since we don’t really need all the information associated with the buffer, dissolve the whole feature class (you might want to clip the buffered feature class to San Diego county before the dissolve if you have a slow computer). The resulting shp. file is an approximation of current fire areas in North America.

Fourth, use GIS Tools to extract SF3 P88. (Ratio of Income to Poverty Level) at the block group summary level. Use Excel or Access clip the dbf. fie to San Diego county (FIPS 073). Next, estimate the population eligible for LSC services in each block group. Using Excel, sum P088001 through P088010. This gives use the count of persons below 200% of FPL. Also, calculate the percentage of the population below FPL. Save the file as a dbf. (Tip: Remember that when you save the Excel document as a dbf. file you need to make sure any fields with decimal places are formated as “number” in Excel.)

Needs Assessment - Romona

Fifth, start ArcMap. Add the layer that you created in step 3, the USA basemap layer (it came with your copy of ArcGIS), and the dbf. file you created in step four. Download the census block group 2000 shp. file for San Diego county. Add the shp. file to the map.

Sixth, join the dbf. you created in step four to the census tract shp. file. The join will be based on the STFID field of the block group shape file and the SFID field of the dbf. file.

Seventh, examine the map to determine areas most likely in need of assistance. My initial concern would be with the northern parts of Romona due to the high concentrations of people below 200% of FPL. Providing immediate services to these area would likely be more efficient and have a higher impact due to the high concentrations of low-income persons.

In the end, I was hoping to complete this project in an hour and a half. It ended up taking me two hours but I still think that it was a fairly reasonable expenditure of time …. particularly because I could now examine the impact of the fires on all of San Diego county (at least in term of burn areas as off October 25, 2007). I hope this “walk through” helps give legal services practitioners an idea of “real world” GIS applications for the legal services community. Please feel free to contact the REP if you have any questions. (Post edited on 10/26/07 to correct buffer error).

Also, if your service area is includes parts of San Diego county and you would like specific maps please contact us. (No need to replicate work already done.)

Mapping HUD subsidized housing – GIS Geek Alert

October 18, 2007 (posted by ElektroMoose)

LSNC alum John Gianola just turned us onto a nifty dataset of HUD subsidized projects. The dataset can be used to create accurate point features for all HUD subsidized housing (excluding HCV units). You can also use the dataset to map all HUD subsidized housing (including HCV units) at the census tract summary level (this data is in the aggregate and is not geocoded at the street level). HUD has taken their customer service to a new level by publishing a “how-to” on mapping the dataset using ArcGIS.

Sacramento HUD Subsidized Housing Map

I tested HUD’s “how-to” and it worked well. Initially, I was unable to import the txt. file into a personal geodatabase but inexplicably the problem didn’t occur on my third attempt (ArcGIS is such a fickle friend). I can only assume that I should have followed the HUD “how-to” more carefully. In the end, I was happy with the point feature class of HUD subsidized developments and intend to conduct proximity and concentration analysis using it. This data can be used in more contexts than can be named here and I strongly suggest that advocates take the time to create a point feature class of developments in their service area using this HUD dataset.

I also tried creating a dbf. file from the HUD txt. file because my familiarity with the personal geodatabase is limited. First, I opened the txt. file with Excel and followed the normal procedure for opening a comma-delineated file. After dealing with these initial formating issues, I saved the file as a DBF IV and then added the dbf. to ArcMap. After adding the file, I defined the coordinate system as GCS North American 1983. This alternate method failed completely and gave me one strange point feature class. My advice, follow the HUD “how-to”. Feel free to contact us if you need some help.

California is OnTheMap

September 27, 2007 (posted by ElektroMoose)

On September 30, 2007, the Census Bureau will release the final version of OnTheMap, bringing the number of states available in this tool to 42. OnTheMap is a Web-based, interactive mapping application that allow users to shows where people work and where workers live, with companion reports on their age, earnings and industry distributions. This final release adds mapping capacity for nine states: Alaska, California, Louisiana, Michigan, Mississippi, North Dakota, Rhode Island, Utah and Wyoming. OnTheMap is useful tool for investigating demographic trends to support economic development work, transportation advocacy, emergency management concerns and other potential applications.

New healthcare statistics

August 28, 2007 (posted by ElektroMoose)

Hot off the press – the Census Bureau just released the new Income, Poverty, and Health Insurance Coverage in the United States report.

The report documents disturbingly high rates of lack of health insurance amongst people of color: 10.8% of non-Hispanic Whites are uninsured; 20.5% if African Americans are uninsured; 15.5% of Asian Ameicans are uninsured; 34.1% if Hispanics and Latinos are uninsured.

Interestingly, in a press conference yesterday, the Bureau responded to comments made by other government departments, including the Executive Branch, that Bureau numbers on the incidence of uninsured persons were misleading and “bogus”. The Bureau stated that these statistics represent the “best estimate[s]” possible.

New Census Bureau data release

August 13, 2007 (posted by ElektroMoose)

The REP humbly tips its hat to LSNC’s very own Webdog who beat us to the punch on announcing the release of new Census Bureau data.

The Census Bureau just published a news release reporting that more than 300 counties are now “majority-minority”. Take a look at the very readable analysis of this data published by the New York Times.

USA Today, refusing to be “one uped” by the NYT, published a story on the data release that included an interactive flash-based map of the Impact of USA’s diversity that visually extrapolates the newly released demographic data from the Census. The maps offers three views: one mapping the patterns of the new “majority-minorities”; another illustrating migration patterns of Hispanics, with the fastest rates of growth of Hispanics occurring in the Midwest and the East Coast; and a third showing a trend among Blacks of moving toward the South. Plus, you get an interesting audio commentary from the demographer at the Brookings Institution. Flash and GIS…what an attractive couple.

Lastly, Webdog offered some words of wisdom on Census data that we think are well worth sharing. The Census usually embeds links to the underlying data on major stories like this, making it simple to find the source data. If you take a look at the Census news release linked above, you’ll notice links to both a detailed explanation of the underlying methodologies used, as well as a link to a page where you can download the entire data sets used.

Evidence of discrimination in School District No. 1?

June 29, 2007 (posted by ElektroMoose)

I was unclear about the severity of the segregation patterns that Seattle School District No. 1 (“District”) was trying to remedy after reading the Court’s recent opinion in Parents Involved In Community Schools v. Seattle School District No. 1. Given the Court’s summary factual account of the problem that gave rise to the District’s program, I wondered how severe the segregation patterns in the District were.

I decided to map the patterns of segregation existent in the District at the commencement of the suit. Take a look at the map for yourself (Click on the map image to view the map).

Seattle School District No. 1 Map

Note that the District’s program simply gave preference to students of color who requested to attend one of District’s “high demand schools.” Was the problem of segregation perhaps more severe than the Court’s statement of facts suggests? Could such marked patterns of segregation really be unconnected to our history of racial segregation? The REP would love to hear your thoughts.

Swivel me timbers…arrrrgh

June 13, 2007 (posted by ElektroMoose)

Now that I grabbed your attention with pirate speak, lets talk about Swivel’s new mapping feature. I introduced you to Swivel and their niffty online data analysis tools a few months ago. Things just got even better! Swivel recently introduced a feature that allows users map uploaded data.
Swivel brings the number of sites that allow users to map uploaded data to two (the other is Dataplace). Lets compare Swivel’s and Dataplace’s mapping features.

I uploaded an excel spread sheet (saved in .csv format) to both websites. The spreadsheet contained the percentage of the population that is of color for each California county. The data was derived from the 2000 Census. Both sites provided a painless and surprisingly speedy upload process.

Next, we tried to map the data. We figured that a good mapping program for poverty advocates should be able to map data at the county. Did Swivel and Dataplace deliver?

Dataplace ExampleDataplace produced a very nice map with the uploaded data. I especially appreciated the ability to change the number of data classes and the ability to select a color ramp.

Swivel Example Swivel had a few problems mapping the data. Although a box appeared displaying the percentage of the population that was of color in a given county when the cursor was moved over it, the map itself was all one color. In my book this pretty much sunk Swivel’s ship.

My Verdict: I recommend Dataplace for your online mapping needs…at least until Swivel works out the bugs of its new mapping feature. Both sites offer very useful data tools and I am confident that the folks at Swivel will resolve the issues with their mapping feature.

Easily get Census 2000 data

May 19, 2007 (posted by ElektroMoose)

The REP has mentioned GISTools freeware developed by Professor Bruce Ralston before but we want to make sure that all our readers know about these programs. Compared to AmericanFactfinder these tools will save you hours of time.

What are they: Professor Ralston developed four programs that allow people to easily obtain Census 2000 data from the SF1-SF4 files for any summary level (i.e. block, tract, city, county, state, etc.)

When do I use them: The REP suggests using these tools if you need Census 2000 data for presentations, research, or mapping. They are particularly helpful if you need data at the block group or block summary level.

How do I use them: These tools are super user-friendly. Step 1: Download the zip files containing the Census 2000 data from the Bureau’s ftp site. Step 2: Download the appropriate “geo” file for your data. There is one geo file for SF1-SF4 files for each state. It’s normally at the very bottom of the folder with the zip files for the summary file. For instance, at the bottom of the folder for California SF1 data there is a file named cageo_uf1.zip. Step 3: Download the tool. There is a different program for each summary file (i.e. 1–4). Step 4: Follow the instructions in the user manual that is available for download from the same site that you got the program from.

Lastly, tell Professor Ralston how wonderful his programs are and keep you fingers crossed that he will provide similar freeware for Census 2010.

Warning – Techie Post

May 10, 2007 (posted by ElektroMoose)

Bill Cooper from FairData2000 just turned me on to some freeware that, at least at first glance (I haven’t gotten around to testing it yet), is pretty amazing. First off, I was always frustrated by the fact that I would need an ArcINFO license to convert TigerLine files into shape files. It turns out that you don’t. TGR2SHP is freeware that allows you to do this.

But wait, there’s more!

Extracting SF1 through SF4 data is painful especially if you have to make sure that the results have unique STFID numbers so that they can be joined to publicly available shape files. Well there is a whole series of freeware from the people who made TGR2SHP that extracts user-selected data from census 2000 zips in dBase format. Take a look. Better yet, there are no duplicate STFID numbers so you can join the dBase files to ESRI’s publicly available shape files. Viva freeware and Viva GIS Tools, Inc.!

Sacramento County SF3 Census 2000 Data

May 8, 2007 (posted by ElektroMoose)

The REP is a huge fan of using the Census 2000 shapefiles provided by ESRI. Unfortunately, the available data that can joined to these files is limited and only useful to the poverty advocate in limited circumstances.

In a moment of lunacy, the REP decided to create a database of all Census 2000 Sacramento County SF3 data at the block group level indexed to the ESRI shapefiles. Now that we are done we thought we would share!

The SF3 data provided is in Dbase 5 format. The data fields are numeric. Each file begins with header fields (LOGRECNO (Logical Record Number), COUNTY, STFID, and the data dictionary reference name). Please review the Read Me file for further documentation and a listing of database contents.

This data is provided under the Terms of Use. By downloading this data you are indicating your acceptance of the Terms of Use. You will receive the data in ZIP file format. To use the data you must extract each file. Download file. (This file is no longer available for download. Please use GISTools to obtain this data. Post edited on 25/08/2008.)

The REP would like to thank K.C. King for her help with the project. LSNC DERA attorneys really can do everything.

New demographics for the California bar and bench

April 19, 2007 (posted by ElektroMoose)

A recent report from the California Bar Association’s highlighted the lack of representation of women and persons of color on the bench and in the bar.

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Newsletter 2.0

January 26, 2007 (posted by ElektroMoose)

Happy New Year! The REP has resolved to promote fact-based, race inequity arguments. Why? Unless decision-makers are confronted with hard data, claims of race inequity are often dismissed as anecdotal or diverted by side arguments. Worse yet, arguments founded on theory or policy afford parties the opportunity to revert to their respective ideological camps thus foreclosing the opportunity of productive dialogue. Fact-based arguments remove the wiggle room; they force decision-makers to address the evidence as you frame it.

The REP has a three-step process for creating fact-based arguments using data: (1) Identify the appropriate data source; (2) Obtain and analyze the relevant data; (3) Present the data in an understandable format.

Identifying the Appropriate Data Source

Even though data is more accessible then ever, finding the right data source can be a daunting task. With so much data available, how do you find what you need? The REP’s Data & Demographics page lists a host of data sets useful for race-based advocacy. The page includes a synopsis of the data, suggested uses, and even a few time saving tips. We also try to evaluate the credibility of a given data set. Still can’t find what you need? LSNC provides a massive list of data sources relevant to a variety of poverty practice areas. Remember, the data most favorable to your position may not be the best choice if your audience doesn’t think it’s from a credible source. Choose your data source wisely.

Obtain and Analyze Data

Obtaining data is often as simple as familiarizing yourself with a given website. The learning curves can be steep but take solace in the fact that learning how to use a site is like learning to ride a bicycle… you never forget. As far as analysis, don’t concern yourself too much with issues that are properly left to statisticians. When people examine your data they will want to know (1) its source and (2), on rare occasions, the raw numbers. Outside the context of litigation, your data analysis will likely not be subject to further scrutiny.

Data Presentation

It’s all about the presentation! Nothing puts an audience to sleep faster than a list of data. We suggest presenting data using graphs, charts or maps. Excel or web-based mapping applications are an excellent tool for this. Lastly, don’t get caught up in minutia. A data presentation should tell a simple, understandable story. Any superfluous points should be left out.

Contact the REP if you would like to see examples of our data presentations.

In The News

We know it isn’t much but it would be hard to find find two more reputable recommendations.

Poverty Law News, National Center on Poverty Law, December 8, 2006.

  • “Legal Services of Northern California has launched a website for the Race Equity Project. The Project will digest, implement, evaluate and disseminate race-based advocacy resources and will facilitate a more efficient and effective delivery of race-based advocacy.”

Housing Task Force Update “News Update”, Western Center on Law and Poverty, No. 57 January 2007.

  • “Created to develop a strategy to coordinate race conscious advocacy in the legal services community, the Race Equity Project provides invaluable information.”

A Call for Research Projects

We have externs! The REP wants to know what you need and assign work accordingly. Do you have a race-related memo or research project that you need? Do you lack the time or resources to start it? Does the project or memo have broad appeal? Share your idea with us and we will see if we can make it a reality.

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Chart Your Path

January 25, 2007 (posted by ElektroMoose)

For all of our readers who avidly follow Webdogs 2.0, take a look at Swivel. This data mash-up allows users to upload and share data, create charts, and share their opinions on data presentations. It’s still in beta testing so expect to encounter some bugs. However, the bugs are overshadowed by the fact that you are finally free from Excel’s limited chart-making tools. Could Swivel be used as a forum to test data presentations on race equity? Take a stab at it and let the REP know how it goes.

Prisoners of the Census

January 23, 2007 (posted by ElektroMoose)

A big “thank you” to Bill Cooper of Fairdata2000 for tipping the REP to this site.
Prisoners of the Census explores various problems resultant from the fact that “the Census Bureau counts prisoners as if they lived voluntarily in the communities where they are incarcerated.”

The site details how this practice distorts the 2000 census. Of particular interest is the documentation of the skewing of the count of the Black population. If you think the 2000 numbers for an area of interest seem off, you may be right. Take a look at the handy tool that allows you to ‘to see how the Census Bureau’s method of counting people in prisons skews your county’s demographics.’

The site also explores the effects of the Cenus’s method of counting prisoners on redistricting. The site reports, “The inaccurate census figures allow state lawmakers to pad district populations when drawing legislative maps. This creates prison districts with disproportionate voting power and drains political influence from the urban districts where most prisoners live.”

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New HUD Market Reports

January 18, 2007 (posted by ElektroMoose)

Are you waiting for new HUD data? If you live in Pueblo, Sacramento, Savannah or Tyler you are in luck.

HUD recently released its first 2007 Comprehensive Market Reports for Pueblo, Colorado; Sacramento, California; Savannah, Georgia and Tyler, Texas. Each report analyzes changes in the economic, demographic, and housing inventory characteristics of a the market area during three periods: from 1990 to 2000, from 2000 to the as-of date of the analysis, and from the as-of date to a forecast date. The reports present counts and estimates of employment, population, households, and housing inventory.

If you do not live in a covered city, HUD may have completed a Comprehensive Report on your city between 2002 and 2006. Past reports are archived.

A big “thank you” to John Gianola for tipping the REP to this new release from HUD!

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Immigration Trends in Rural Areas

January 11, 2007 (posted by ElektroMoose)

Emily Fisher in LSNC’s Butte regional office tipped us off to this recent report on new immigration settlements in rural America.

If you are a Californian you might be interested in knowing that several areas have experienced significant changes in immigrant population relative to the 1990 total population, especially Mendocino, Tehama and Glenn and although increased farm employment tended to decrease poverty in the 1980’s, by the 1990’s the opposite was true.

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