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All this stuff looks rather useful: http://geos.osgeo.org/doxygen/classgeos_1_1noding_1_1Noder.html

However, from the GEOS README file:

The C++ interface should not be used directly; the geos project views it as a bug for another program to use the C++ interface or even to directly link against the C++ library.

Is there a C interface to the Noding functionality that I'm missing? I can't find it in geos_c.h.

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From Shapely (GEOS port) I don't know how to access Noder functionality too. The solution may be related. –  cag Feb 3 '13 at 23:19
I have found out that if you union or intersect a line geometry with itself, it comes back noded. But without any control over the noding algorithm. –  Sideshow Bob Feb 4 '13 at 12:12
It isn't what I´ve expected, but works perfectly. Thanks! –  cag Feb 4 '13 at 16:22

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