taxfoundation / congressional-district-interactive

Interactive map showing Congressional district level average tax cuts for the TCJA.

Congressional District Interactive Mapping Tool

Data Sources

• Cartographic Boundary Shapefiles - Congressional Districts

To create the individual state topojson files, the mapshaper tool was used with the following configuration:

mapshaper -i cb_2015_us_cd114_500k.shp name='' -proj wgs84 -split STATEFP -o format=geojson
mapshaper -i *.json -o format=topojson force

Splitting directly to topojson does not create separate files, so you must first split to geojson and then convert to topojson. D3 expects WGS84 coordinate system, from which it will then apply whatever other projection (in this case, Mercator). Failing to project to WGS84 will result in computer generated art, not a map.

For Alaska specifically, which was 1mb originally, it was simplified with the -simplify 10% argument in mapshaper.

congressional-district-interactive's Issues

change hover text

Change it to:

Average income: <#>
Average state taxes paid: <#>
Average federal tax cut: <#> or <#>% less than pre-TCJA levels

Add footnotes where necessary

E.g., using old data and NC and PA districts have changed shape.

Average income

Don't capitalize the "i" in income

Heading and share buttons

Color Scale Adjustments

Truncate color scale so that districts with tax cuts range from #d3ed9c to #476db0. This should help with those areas that look washed out.

Shading

When I'm at $500k and above for single folks, the shading is much, much lighter than anything else.

Display state name instead of FIPS code

As in here, maybe show Arizona and not 4

Moar district data table styles

DC Mapping

Currently, the data for DC is not being displayed.

Income

I think we need to add a note about how the "average income" is the "average" between the two end points of the range.

Tabular data output for mobile

State selection dropdown

Better tooltip styles

Back button from state view to us view

Add scale