set clab
set clab option
Controls contour labeling. The option
argument may be one of the following:
on
'fast' contour labels are plotted where the contour lines are horizontal
off
no contour labels
forced
an attempt is made to label all contour lines
format
gives a C-language template for conversion of the contour value to a string
masked
(version 2.0.a6+) contour lines have gaps for the labels, so rectangles for label background are not drawn; contour labels never overlap.