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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi Ahmet<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">I haven’t visited C++ and ogr for quite some time, but I think you should define and initialize polyCollect like this:
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal">OGRMultiPolygon *polyCollect = new OGRMultiPolygon();<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">This type should implement the UnionCascaded() method.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Maybe other users on the list can chime in?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">/Casper<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Ahmet Temiz <ahmettemiz88@gmail.com>
<br>
<b>Sent:</b> 1. juli 2019 09:04<br>
<b>To:</b> Casper Børgesen <caboe@sdfe.dk><br>
<b>Subject:</b> Re: [gdal-dev] UnionCascaded operation failed<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">It is geometry list indeed as:<o:p></o:p></p>
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<p class="MsoNormal"> std::vector<OGRPolygon * > polyCollect ; <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I converted it to OGRMultiPolygon <o:p></o:p></p>
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<p class="MsoNormal">But<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#500050"> OGRGeometry *result=polyCollect.UnionCascaded();</span> // ???<o:p></o:p></p>
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<p class="MsoNormal">still failed <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, Jul 1, 2019 at 8:55 AM Ahmet Temiz <<a href="mailto:ahmettemiz88@gmail.com">ahmettemiz88@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Ok, thanks. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, Jul 1, 2019 at 8:39 AM Casper Børgesen <<a href="mailto:caboe@sdfe.dk" target="_blank">caboe@sdfe.dk</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">A very quick guess would be that you have changed the polyCollect type from a geometry
type to a list of geometries. I don’t think the list of geometries has a UnionCascaded method. I would probably go for a polyCollect geometry type of MultiPolygon instead of the list/vector, that way you should be able to run the UnionCascaded method.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">/Casper</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> gdal-dev
<<a href="mailto:gdal-dev-bounces@lists.osgeo.org" target="_blank">gdal-dev-bounces@lists.osgeo.org</a>>
<b>On Behalf Of </b>Ahmet Temiz<br>
<b>Sent:</b> 29. juni 2019 19:47<br>
<b>To:</b> gdal-dev <<a href="mailto:gdal-dev@lists.osgeo.org" target="_blank">gdal-dev@lists.osgeo.org</a>><br>
<b>Subject:</b> [gdal-dev] UnionCascaded operation failed</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Using C++ I try to buffers from LineStrings,Then I want to union the
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">resulting polygons with UnionCascaded.
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">But at UnionCascaded operation failed with:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">"error: ‘class std::vector<OGRPolygon*>’ has no member named ‘UnionCascaded’<br>
OGRGeometry *result=polyCollect.UnionCascaded();<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">"<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Can you tell me what I am doing wrong?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">here is the related code fragment:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> std::vector<OGRPolygon * > polyCollect ;<br>
//OGRGeometryCollection *polyCollect ;<br>
<br>
while( (poFeature = poLayer->GetNextFeature()) != NULL )<br>
{<br>
<br>
OGRGeometry *poGeometry = poFeature->GetGeometryRef();<br>
<br>
if( poGeometry != NULL<br>
&& wkbFlatten(poGeometry->getGeometryType()) == wkbLineString )<br>
{<br>
OGRLineString *poLine = (OGRLineString *) poGeometry;<br>
//<br>
OGRGeometry *bufGeometry = poLine->Buffer(100,30);<br>
OGRPolygon *bufPoly= static_cast<OGRPolygon *> (bufGeometry) ;<br>
printf( "%s \n", bufPoly->getGeometryName());<br>
<br>
//polyCollect->addGeometryDirectly (bufPoly );<br>
polyCollect.push_back(bufPoly );<br>
}<br>
else<br>
{<br>
printf( "no point geometry\n" );<br>
}<br>
<br>
OGRFeature::DestroyFeature( poFeature );<br>
}<br>
<br>
OGRGeometry *result=polyCollect.UnionCascaded();<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><br>
-- <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Ahmet Temiz<br>
Jeoloji Müh.<br>
Afet ve Acil Durum Yönetimi Başkanlığı<br>
Bilgi İşlem Dairesi Başkanlığı-CBS Grubu<br>
<br>
<br>
________________________<br>
<br>
Ahmet Temiz<br>
Geological Eng.<br>
Information Systems - GIS Group<br>
Disaster and Emergency Management<br>
of Presidency<o:p></o:p></p>
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<p class="MsoNormal"><br clear="all">
<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal">Ahmet Temiz<br>
Jeoloji Müh.<br>
Afet ve Acil Durum Yönetimi Başkanlığı<br>
Bilgi İşlem Dairesi Başkanlığı-CBS Grubu<br>
<br>
<br>
________________________<br>
<br>
Ahmet Temiz<br>
Geological Eng.<br>
Information Systems - GIS Group<br>
Disaster and Emergency Management<br>
of Presidency<o:p></o:p></p>
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<p class="MsoNormal"><br clear="all">
<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal">Ahmet Temiz<br>
Jeoloji Müh.<br>
Afet ve Acil Durum Yönetimi Başkanlığı<br>
Bilgi İşlem Dairesi Başkanlığı-CBS Grubu<br>
<br>
<br>
________________________<br>
<br>
Ahmet Temiz<br>
Geological Eng.<br>
Information Systems - GIS Group<br>
Disaster and Emergency Management<br>
of Presidency<o:p></o:p></p>
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