The map should use proportional symbol - not choropleth

[Edouard-Legoupil]

Hi For the map -- using an absolute measurement in a choropleth is a semiologic error - (unless it would be a choropleth with polygons of a similar size) -

Either we convert the value to be displayed to a % of change in comparison of previous year - the it's a ratio and we can keep a choropleth -

or better we keep absolute number of persons increase/decrease and use proportional symbols with a color code to encode the relative percentage of the increase in comparison with the existing population

[curran]

Interesting thoughts on this.

[Edouard-Legoupil]

http://axismaps.github.io/thematic-cartography/articles/choropleth.html

[curran]

Really nice article!