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<p class="MsoNormal">Hello all,<o:p></o:p></p>
<p class="MsoNormal">I’m looking for some advice in relation to Geometry Error detection. We have a proprietary tool, which can validate geometries in line with OGC, which is flagging geometries as having holes outside of area. Indeed when I check the vertices
I can see the issue, with the “Holes” sharing a node with the external geometry (at the edge, see image below). What I was hoping for was that we could show these same errors in QGIS.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-IE"><img width="346" height="457" style="width:3.6041in;height:4.7604in" id="Picture_x0020_1" src="cid:image001.png@01D960A2.4CD1B300"></span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve used the following QGIS tools for validation of geometries with varying degrees of success, node directly flagging the issue detected.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Check Geometries Plugin: Flags error in Geometry Type, but gives little by way of explination..<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Topology Checker: Flags no errors<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Check Validity Flags no errors, with either QGIS or GEOS<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there a way to check geometries, a tool, python, and another application, which can validate geometries? Or a series of tools which strung together in Model Builder could flag the issues?<o:p></o:p></p>
<p class="MsoNormal">Regards and thanks in advance,<o:p></o:p></p>
<p class="MsoNormal"><br>
Richard.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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——</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; FONT-WEIGHT: bold; COLOR: #004d44">Richard McDonnell MSc GIS, FME Certified Professional</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #004d44"><i>FRM Data Management</i></span><br>
<br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #004d44">——</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; FONT-WEIGHT: bold; COLOR: #004d44">Oifig na nOibreacha Poiblí</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #004d44">Office of Public Works</span><br>
<br>
<span style="FONT-FAMILY: Arial, sans-serif; FONT-WEIGHT: bold; COLOR: #565148">Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36
</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #565148">Jonathan Swift Street, Trim, Co Meath, C15 NX36</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #565148">——</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #565148">M +353 87 688 5964 T +353 46 942 2409</span><br>
<a href="https://gov.ie/opw">https://gov.ie/opw</a><br>
<br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #004d44">——<br>
To send me files larger than 30MB, please use the link below https://filetransfer.opw.ie/filedrop/richard.mcdonnell@opw.ie<br>
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<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #004d44">Email Disclaimer: https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/
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——</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; FONT-WEIGHT: bold; COLOR: #004d44">MSc GIS, FME Certified Professional</span><br>
<br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #004d44">——</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; FONT-WEIGHT: bold; COLOR: #004d44">Oifig na nOibreacha Poiblí</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #004d44">Office of Public Works</span><br>
<br>
<span style="FONT-FAMILY: Arial, sans-serif; FONT-WEIGHT: bold; COLOR: #565148">Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36
</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #565148">Jonathan Swift Street, Trim, Co Meath, C15 NX36</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #565148">——</span><br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #565148">M +353 87 688 5964 T +353 46 942 2409</span><br>
<font color="#565148"><a href="https://www.opw.ie">https://https://gov.ie/opw</a></font><br>
<br>
<span style="FONT-FAMILY: Arial, sans-serif; COLOR: #004d44">——<br>
</span><span style="FONT-FAMILY: Arial, sans-serif; COLOR: #004d44">Email Disclaimer:
<a href="https://www.opw.ie/en/disclaimer/">https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/</a></span>
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