The gcompare program determines compares two lists of objects with X,Y coordinates and prints the matched entries. A radius of matched is given, and all pairs of objects between the two lists which lie within the given radius are printed. The delta coordinates may also be optionally printer, or the unmatched objects in either the first or second list. An offset for the center can be optionally applied.

 gcompare file1 Nx Ny file2 Nx Ny radius [options]
  -c x y