I have a solution that works, but you may have to redefine a number of metapost
symbols. I set a color attribute on my lines and use it in the following way
in a line or point symbol:
if known ATTR_color:
scantokens ATTR_color;
else:
scantokens "color col; col:=black;";
fi;
Then add a withcolor col to all the draw commands.
Carl
On Jan 1, 2010, at 2:48 PM, Torstein Finnesand wrote:
> Hi. I have a simple .th file with centerline data from a cave. The output
> file is PDF (map), - with the centerline and station symbols. I have no
> scraps.
>
> My problem is how to visualize the shots and the stations symbols in 3
> colours in the PDF file:
> 1. one group of the shots (and their stations) could be default (black)
> 2. the second group (and their stations) could be red
> 3. the third group could be blue (with hidden or blue stations). Or better:
> The group is hidden.
>
> I can fix no. 1 and no. 3, the last one by using flag surface in .th file
> and symbol-hide / symbol-colour in the config file. (The shots are not
> surface shots, but that doesn't matter.)
>
> But how to fix no. 2?
>
> Torstein Finnesand
> Norway
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