GSLIB Help Page: ROTCOORD

Description:

2D coordinate rotation (and reverse rotation)

Parameters:

datafl: the input data file.

icolx and icoly: The columns for the x coordinate
and y coordinate.

outfl: file for output with rotated (or back transformed) coordinates.

xorigin and yorigin: the origin of the rotated system in
the original coordinate system.

angle: the rotation angle (in degrees clockwise).

switch: if switch=0 then rotate to the new coordinate system
(the default case). If switch=1, however, then the input
x
and y coordinates are considered to be already rotated and they
are back transformed to the original system.