9
votes
2answers
860 views

How do you choose the classifications on choropleth maps?

I find myself more and more struggling over defining break points when displaying choropleth (aka thematic) maps to view by others. Does anyone have any suggested references that help guide, both how ...
9
votes
7answers
880 views

How to automatically set polygons borders to improve map readability when rendering thematic maps?

When mapping an value as a color to render a thematic map the objects borders can alter the map readability a lot. For example in this thematic map of the US counties with black borders: There are a ...