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<H2><A NAME="SECTION003235000000000000000">
O.3.5 Label placement at general line intersections</A>
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<P>
If (1) the number of intersecting straight line segments needed to pick the desired label
positions becomes too large to be given conveniently on the command line, or (2) we have
another data set or lines whose intersections we wish to use, the general crossing
algorithm makes more sense:
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<PRE>pscoast -R50/160/-15/15 -JM5.3i -Glightgray -A500 -K -P > GMT_App_O_5.ps
grdcontour geoid.grd -J -O -B20f10WSne -C10 -A20+d+s8 -GXcross.d -S10 -T:LH >> GMT_App_O_5.ps
</PRE>
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<DIV ALIGN="CENTER"><A NAME="fig:GMT_App_O_5"></A><A NAME="32950"></A>
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<CAPTION ALIGN="BOTTOM"><STRONG>Figure O.5:</STRONG>
Labels are placed at the intersections between contours and the
multi-segment lines specified in the <B>-GX</B> option.</CAPTION>
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<P>
In this case, we have created three strands of lines whose intersections with the contours
define the label placements, presented in Figure <A HREF="#fig:GMT_App_O_5">O.5</A>.
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<ADDRESS>
Paul Wessel
2010-01-14
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