Could be more accurately titled, "Don't ALWAYS Make a Map".
Here's some useful advice for all you data mappers out there. It's cautionary tale about things that can go wrong with an informative map. Spatial visualizations that don't convey the right idea, data quality problems, and my favorite, the "fruity pebbles" problem. That is, choropleth maps with too many categories and no meaningful geospatial patterns.
The push is on for more support graphics, and maps certainly make outstanding infographics, but not if the mapmaker isn't thinking clearly about the message.
Click here for WAOP Presentation.
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