<div dir="ltr"><br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div dir="ltr"><div>I never used GRASS
topology, I still have to learn about it, but I think this
representation would be flexible enough to adapt to different
situations. It would also be possible to build "ad-hoc" topologies with
simple normal vector layers (shapefiles, etc.) and have editing
operations follow basic topology rules including several layers, which
is something I would like to see (I work with networks and casual users
who can open shapefiles, but not install PostGreSQL). This kind of
topology would be like an extension of the existing pseudo-topology
editing, just extended to several layers.<br></div></div></div></blockquote><div><br></div><div>Topological editing (i.e. following topological rules) is completely different from editing topological data structures. The two concepts are so different that I can hardly think of a common base...</div>
<div><br></div><div>giovanni</div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div dir="ltr"><div><br>Pierre<br></div> </div>
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<a href="http://about.me/giovanniallegri" target="_blank">http://about.me/giovanniallegri</a><br>blog: <a href="http://blog.spaziogis.it" target="_blank">http://blog.spaziogis.it</a><br>GEO+ geomatica in Italia <a href="http://bit.ly/GEOplus" target="_blank">http://bit.ly/GEOplus</a>
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