Suggestion: Export biome map at custom altitude(s) as bitmap

[mk-pmb]

Hi! I'm looking for ways to export the biome information for a region file at specific altitude(s). Ideally as an ASCII map where different characters mark the biomes, but I could also easily convert png/bmp/ppm once I know the color mappings, as long as 1 block = 1 pixel. It seems that mcaselector already has biome detection code, and obviously it can read region files, so would it be easy to have command line options to make it dump that info to a file? Might also be a separate program just sharing the code base if that's easier.