GRASS (Geographic Resources Analysis Support System) is a very old GIS with very advanced features for raster and vector analysis.

GRASS GIS 7 Programmer's Manual

Programming language integration:

  • R: Start R in GRASS console.
  • Python API (PyGRASS) is available in GRASS 7.

Vector v

v.extract Selects vector objects from an existing vector map and creates a new map.

Raster r

Voxel (3D) r3

Database db

Display

d.vect.thematic Displays thematic vector map

🏷 Category=Geographic Information System