Support Staff2 Posted by AJ on 24 Sep, 2012 08:02 PM
TileMill can't currently export a georeferenced image directly,
but you could export the Mapnik XML and then use nik2img
from the terminal to render a georeferenced PNG. (Use the
--world-file=<file> option to do this.) You
could then use gdal_translate to
convert the file to a GeoTIFF.
Direct export of a georeferenced image would be a good future
feature for TileMill; I'll make a note of this to see if that's
something we can do.