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Friday, April 13, 2012

Guardian Datablog Learns about Selecting Colors for Choropleth Maps

It came up this week with this map on poverty and deprivation in London, part of our London: the data series. Recently we've been using the colour scale on the map below, which is a variation on the famous traffic light collection of colours - for the Guardian, this tends to go from green, meaning good, or low - up to red, meaning bad or high. It's used by map makers and newspaper designers all the time. But is it any good?
 
This sparked a debate on Twitter, with Gregor Aisch of Driven by Data weighing in on the weaknesses of the colours we chose. It led to a big conversation - and a mutual editing of the map's colours.
The Storified converstaion is worth reading.
 
by Adena Schutzberg on 04/13 at 04:51 AM | Comments | Bookmark and Share

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