Is there a way to specify mm to px conversion when exporting svg using
inkscape --export-png? The --export-dpi doesn't help because it's
overwritten by --export-width.
What I want is have one svg - map. The image will be exported for
different zoom levels, so the pixel size of exported image will vary.
But pixel width of roads should remain the same. In batik, I can
specify road width in mm and then set different different mm to px
ratio for each zoom level to get the same road width at all zoom
levels. But I can't find such option in inkscape.
Is there some way or workaround how to do this in inkscape?