I am working on a cartogram map of the worlds caloric intake but keep getting unsavory results (pun intended). This is my first jaunt down cartogram lane, and have tried a couple of different scripts but neither are giving me the results I would have expected. I have tried Eric Wolf's Cartogram Creator script, as well as Tom Gross's Cartogram Geoprocessing Tool Version 2. <quick pause to give props to both of these script writers...>, but neither tools output is giving me the results I would have expected. For example, the two countries that have the highest daily caloric intake are the U.S. and Austria (both are over 3500..), and yet the U.S. is shrinking in my results, while Europe is inflating. The latter makes sense since many of the top caloric intake countries are in Europe, but again, the U.S. is #1 (and Canada #13) and yet N. America is shrinking (see attached). After toying with this for awhile I began to wonder if the initial area of the countries may be effecting the results in some way, but since I'm simply trying to do value-by-area map I am surprised that N. America is shrinking... any thoughts from fellow cartogram guru's out there?
btw, I'm using ArcGIS 9.3.1 SP2, ESRI Country boundaries and FAO data as inputs...
I hope all are well!