qdgridcalc can be used to calculate grid size for given projection area
Usage:
Usage: qdgridcalc [options] projectionstring x_km y_km
Projection string is in SmartMet Projection format
Options:
- -s
if projection string contains grid size, print grid resolution - -f qdfile
Print grid size of given data file
qdgridcalc stereographic,10,90,60:-13.8,31.8,73.2,55.6 25 25
Grid size would be: 232 x 172
Grid size would be at center of bottom edge: 21.9274 x 21.8816 km
Grid size would be at center: 24.9983 x 24.9402 km
Grid size would be at center of top edge: 27.0825 x 26.9947 km
Here we calculate what would be the grid size for this projection and area, if we want 25x25km resolution.