set ccols col1 col2 col3 ... colN
Sets specific color numbers for contour levels specified by
Contour colors are reset with every execution of
- User-specified ccols won't take effect unless clevs are also set.
- If any of the color numbers is < 0, it is set to 0 (the background color).
- (Version 2.0.0+) When using 'gxout shade2' or 'gxout shade2b', if any of the color numbers is < 0, the contour is not drawn (i.e., it is effectively transparent).
- See section of User's Guide on controlling colors in grads for more details.