Choropleth maps are popular. But - as the comic above shows - their popularity requires map makers to take great care in the presentation of the data.

After plotting points and polygons, it is useful to understand how to identify coordinate pairs within a specific distance from one particular coordinate pair.

Catalog of Federal Domestic Assistance (CFDA) provides a full listing of all Federal programs available to State and local governments (including the District of Columbia); federally-recognized Indian tribal governments; Territories (and possessions) of the United States; domestic public, quasi- public, and private profit and nonprofit organizations and institutions; specialized groups; and individuals.

Tutorial on how to plot the Chicago Transportation Authority (CTA) 'L' Rail Line, Rail Stations, Bus Routes, and Bus Stops for the City of Chicago.

What follows is a walkthrough that goes over the key spatial elements needed to understand how to conduct an introductory-level of spatial analysis in R.

USAspending API (https://api.usaspending.gov/) offers an interactive way for active citizens to query relevant federal spending data on a variety of fields. People can query data by geography, type of federal spending, CFDA program number, and much more. This is an example of querying the data for FY17 Austin, Texas.

Interactive map showcasing FY17 federal award information in New York state.

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