Question:

How do I specify the color of text labels?

Example:

Try this:

   ! a sample plot
   go fland 60 black basemap

   ! a standard black label (pen=1 default -- same as using "@P1")
   label 50 -60 -1 0 .2 Here is a label in black

   ! a red label
   label 50 -80 -1 0 .2 @P2Here is a label in red

   ! a white label -- redefine pen 6 to be white (100% on R,G, and B)
   ppl color 6 100,100,100
   label 50 -80 -1 0 .2 @P6Here is a label in white

Solution:

Use "@Pn" in your label string to select among the 6 predefined line/text colors as in the examples above. Try

   yes? GO line_samples

If the color you need is not among the default choices you can redefine any of them using the "PPL COLOR" command (see PLOT+ Enhancements Guide). The color settings will be applied on the hard copy, too.