derive a new set of coordinates from an old set of coordinates by merging or deleting
When you use difmod
to derive a new difference
matrix from an old one, you can use this program to derive the
corresponding new coordinate file from the old coordinate file.
To determine the coordinates for a location that was formed by joining
several old locations, the programs needs to know what type of
coordinates are used.
Use option -L if the coordinates are given in longitude and latitude.
New coordinates are calculated by determining the centre of gravity of
points on the surface of a sphere.
Use option -a if the coordinates are given in some user-defined
rectangular grid. New coordinates are calculated by averaging the old