Renderer for making contour plots.
format, empty string means use the default format.
handle for the property lineThick.
return the contour locations, a comma-separated list
return the inter-label distance, in ems.
get the line thickness in pixels.
true if labels should be drawn.
set the contour locations, a comma-separated list
true if labels should be drawn.
explicitly set the format. format is found there.
set the inter-label distance, in ems.
set the line thickness in pixels.