Bugs: contour_* routines
Bugs
The contour_* routines cannot be used if 'set_coord("world")'
The contour_* routines cannot be used if 'set_coord("world")' has been set. The following error is printed out when any of the contour_* routines are called in this case (see the full list of contour routines by typing "contour*?" at the Sherpa prompt):
sherpa In [12]: set_coord('world') sherpa In [13]: contour('data') NotImplementedErr: contours on non-uniform grids are not yet supported