Make Your Own Cartogram
Published Saturday, May 06, 2006 by CCAer | E-mail this post
is a free Java applet that creates cartograms and choropleth maps. Provided you can make sense of the somewhat confusing documentation
, you can employ shapefiles converted to psc files (using the convertor tool supplied on the website
) and export the resultant map to an eps file (supplied in code, of all things). This is not the most user-friendly tool about and didn’t quite make sense to me until I had a look at some of the examples
of the tool in use.
The world map
is perhaps the most illustrative of the examples and comes in two sizes. It allows you to enter in your own data (with very little indication as to how that should be done or in what order) and to specify the number of “passes” or how much distortion should occur when the cartogram is being created. It also allows you to specify the colours that are be used on the map and how the classes should be divided.
All in all, an interesting tool made for the technical person. This is not a very user-friendly applet.