A mashup of Map Projection Distortions and transitions using the D3.js extended geographic projections plugin.
A comparison of map projections by four different types of distortion:
- Acc. 40° 150% – The Acceptance index is a numerical measure that summarizes overall projection distortion, in this case with a maximum angular distortion of 40° and areal distortion of up to 150%.
- Scale – The weighted mean error for overall scale distortion.
- Areal – The weighted mean error for areal distortion.
- Angular – The mean angular deformation index.
Lower is better. Data transcribed from the Natural Earth Projection by @mbostock.
Read more about map projections on Wikipedia.