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<div class="moz-cite-prefix">On 2012/10/24 16:08, Burgstaller Stefan
wrote:<br>
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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">does anyone know a
possibility to repair geometries with QGIS or other OSGEO
software? In QGIS I only found a function to check for some
geometry errors in shape-files, but not to repair them…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE">Best
greetings,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE">Stefan
Burgstaller<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE">Land-Data
Eurosoft GmbH & Co. KG<br>
Rennbahnstr. 7<br>
84347 Pfarrkirchen<br>
Telefon: 08561 - 3006 - 782<br>
E-Mail: <a moz-do-not-send="true"
href="mailto:burgstaller@bbj-unternehmensgruppe.de"><span
style="color:blue">burgstaller@eurosoft.de</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE"><o:p> </o:p></span></p>
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<br>
Hi Stefan,<br>
With this question, you open a big can of worms.<br>
<br>
What do you call "repairing geometry"? <br>
Automatically fixing overshoots and undershoots?<br>
When is a road-closure seen to be an undershoot, and then
automatically closed (in error) like a T-junction should be?<br>
What if a road widening on a cadastral vector map is so small it
gets snapped up?<br>
<br>
Perhaps give an example of your dataset and some of the errors you
expect therein.<br>
<br>
...but, if your dataset is not a simple one, best you don't just
rely on software to clean it. Chances are the guy that wrote the
"cleaning" routine in (any) software only had a darn good
understanding of topology, and not that of the logical meaning of
your dataset.<br>
<br>
Hope this helps (a bit).<br>
Kind regards,<br>
Zoltan<br>
<br>
<pre class="moz-signature" cols="72">--
===========================================
Zoltan Szecsei PrGISc [PGP0031]
Geograph (Pty) Ltd.
P.O. Box 7, Muizenberg 7950, South Africa.
65 Main Road, Muizenberg 7945
Western Cape, South Africa.
34° 6'16.35"S 18°28'5.62"E
Tel: +27-21-7884897 Mobile: +27-83-6004028
Fax: +27-86-6115323 <a class="moz-txt-link-abbreviated" href="http://www.geograph.co.za">www.geograph.co.za</a>
===========================================</pre>
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