Generic GRASS-GMT Plotting System

Premise:
A generic press-quality plotting systemfor GRASS, based on GMT. Still a ways to go.

Notes:

Export of raster data to GMT grid via GDAL is not well supported when the source raster contains nodata values.
Exporting raster data with a combination of r.out.bin [...] | xyz2grd [...] is problematic when there are several rasters to export and they are of different resolutions, especially when changing the region resolution results in a non-integer cell size (xyz2grd fails).
A more unified approach to this would drop sh hack altogether, and use the existing GRASS python bindings, along with the emerging GMT python bindings.
Exporting thematic vector data is still problematic, however the new support for the GMT vector file format may improve the situation
Exporting paletted raster data is complicated by the need for a CPT file, not sure if it is possible to convert the GRASS color rules file into one.
Calculation of page layout measurements and rounding of numbers cannot be done with bash. See attached perl script.

Code Example:
see attached file