[postgis-users] intersectionPatternMatrix documentation request

[Kevin Neufeld]

GeoTools has some pics here.
http://docs.codehaus.org/display/GEOTDOC/Point+Set+Theory+and+the+DE-9IM+Matrix

My Foss4G2007 PostGIS talk also has a section on this.
http://www.foss4g2007.org/presentations/viewattachment.php?attachment_id=30

Or the spec,...
http://www.google.com/url?sa=t&ct=res&cd=6&url=http%3A%2F%2Fwww.ikg.uni-hannover.de%2Flehre%2Fkatalog%2Fgis%2Fgis_3_pdffiles%2Fogis_sql_99-049_2432.pdf&ei=OI1WSO22Mob6pgTq4aTxAg&usg=AFQjCNHibcdcwSC6Jz_iT9wiDo4cl-Belg&sig2=UpigPxzWA_B62QoZy6inUw


Rather than an appendix, what about updating the docs for the method?  I 
personally would love to see an enhanced description, a few pictures, 
and example queries for *every* method PostGIS has.

Hope this helps,
-- Kevin


Webb Sprague wrote:
> Is there a graphic that shows the various possible intersection
> matrices that can be yielded from a "relate()" call?  A link to the
> spec, a picture, and an accompanying table would be, to my lights,
> VERY useful additions to the standard docs.
> 
> I realize that they are out there in cyberspace somewhere, but it is a
> pain in the neck to find them even with Google, and a summary graphic
> is all I really want.  I would recommend an Appendix B in the main
> docs.
> 
> I would offer to write this up, but I don't know much about it.
> 
> Thoughts
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