Case Studies
CalEnviroScreen
The CalEnviroScreen data set compiles various pollution, health, and demographic data for each census tract in California.
The data is available in the raw form in a spreadsheet and the CES website creates maps that color-code the data.
The CES maps are a version of a choropleth map. These choropleth maps use color to show the percentile of each area in the overall data set of California census tracts.
Note that there are at least two ways where these data are summarized and lose detail.
- The overall score is a composite of all of the pollution and health factors.
- The score for a geographic area is over the entire census tract.
CSU Data
There are 23 CSU campuses which is a manageable number for plotting data by hand.
State Data
There are 50 states in the US which is also a manageable number for making histograms by hand.