I would like to make several map images (e.g. SVG or PNG) like those on wikipedia but in not popular projection. I am interested in scripting solution.
Here I found this note:
Generation Notes perl xml2svg.pl -P12 --proj=cylindrical_equidistant:0,0.793353340291235 -x8000 world98
(I haven't found this script yet. Where is it?)
Also I found mentions of Generic Mapping Tools and Mapnik.
There are also several other flavors of maps on Wikipedia. I believe, more ways to create a map images exist.
So what are preferred map rendering techniques and datasets for Wikipedia?