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Fat white contour lines



I know everyone is just dying to know how to make fat white contour
lines (for example to overlay on a FILL plot).

If you just want thin white lines then /COL=19 does it
straightforwardly, but thick ones require a kluge:

FILL/.... variable1
PPL COLOR,6,100,100,100       ! pick an otherwise-unused line color
CONTOUR/OVER/COL=12 variable2

This will redefine color 6 (magenta) to be white. The use of /COL=12 in
the CONTOUR statement uses thickness 2 of color 6.

Billy K




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