Re: [gdal-dev] How to identify a point is belong to a polygon ?
Thanks Chaitanya, I modified as your suggestion. But, still got the error (GEOS support not enable) when executing the program. About building GEOS, if I only add two first lines, the process will be sucessful: 1. GEOS_DIR = C:/geos-3.3.5 2. GEOS_LIB = $(GEOS_DIR)/src/geos_c_i.lib if I add third line, the building process will get errors 3. GEOS_CFLAGS = -I$(GEOS_DIR)/capi -I$(GEOS_DIR)/include/geos -DHAVE_GEOS Errors: LINK : fatal error LNK1181: cannot open input file 'ogr\ogrsf_frmts\ogrsf_frmts. lib' NMAKE : fatal error U1077: 'C:\Program Files\Microsoft Visual Studio 10.0\VC\BI N\lib.EXE' : return code '0x49d' Stop. Thanks and regards, Tai From: chaitanya_ch [via OSGeo.org] ml-node+s1560n4990261...@n6.nabble.com To: taibc taibc_colt...@yahoo.com Sent: Tuesday, July 24, 2012 12:48 PM Subject: Re: How to identify a point is belong to a polygon ? Tai, The environment variables can be set at the command prompt temporarily using SET LD_LIBRARY_PATH=C:\path\to\gdal\libraries SET GDAL_DATA=C:\path\to\gdal\libraries\data You can set them in the project settings in VC++. I don't know how. You can also set them system wide at MyComputer-Settings. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990291.html Sent from the GDAL - Dev mailing list archive at Nabble.com.___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Tai, Geos code is not enabled in GDAL without the third line you omitted. Check the compilation messages to identify the problem. Perform a 'clean' before you build until this problem is resolved. On Tue, Jul 24, 2012 at 12:48 PM, taibc taibc_colt...@yahoo.com wrote: Thanks Chaitanya, I modified as your suggestion. But, still got the error (GEOS support not enable) when executing the program. About building GEOS, if I only add two first lines, the process will be sucessful: 1. GEOS_DIR = C:/geos-3.3.5 2. GEOS_LIB = $(GEOS_DIR)/src/geos_c_i.lib if I add third line, the building process will get errors 3. GEOS_CFLAGS = -I$(GEOS_DIR)/capi -I$(GEOS_DIR)/include/geos -DHAVE_GEOS Errors: LINK : fatal error LNK1181: cannot open input file 'ogr\ogrsf_frmts\ogrsf_frmts. lib' NMAKE : fatal error U1077: 'C:\Program Files\Microsoft Visual Studio 10.0\VC\BI N\lib.EXE' : return code '0x49d' Stop. Thanks and regards, Tai -- *From:* chaitanya_ch [via OSGeo.org] [hidden email]http://user/SendEmail.jtp?type=nodenode=4990291i=0 *To:* taibc [hidden email]http://user/SendEmail.jtp?type=nodenode=4990291i=1 *Sent:* Tuesday, July 24, 2012 12:48 PM *Subject:* Re: How to identify a point is belong to a polygon ? Tai, The environment variables can be set at the command prompt temporarily using SET LD_LIBRARY_PATH=C:\path\to\gdal\libraries SET GDAL_DATA=C:\path\to\gdal\libraries\data You can set them in the project settings in VC++. I don't know how. You can also set them system wide at MyComputer-Settings. -- View this message in context: Re: How to identify a point is belong to a polygon ?http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990291.html Sent from the GDAL - Dev mailing list archivehttp://osgeo-org.1560.n6.nabble.com/GDAL-Dev-f3742093.htmlat Nabble.com. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Thanks chaitanya, I resolved the errors by downloading GEO-3.2.3 (arrangement of folders in geo-3.2.3 is different from geo-3.3.5), re-build geo and gdal. Kind regards, Tai -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990341.html Sent from the GDAL - Dev mailing list archive at Nabble.com.___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Thanks Chaitanya, I reported the error there. And waiting for answers. Kind regards, Tai -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4989973.html Sent from the GDAL - Dev mailing list archive at Nabble.com. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
chaitanya_ch wrote Tai, GDAL needs GEOS to perform these geometry functions. Make sure you install that. On Sat, Jul 21, 2012 at 12:19 PM, taibc lt;taibc_coltech@gt; wrote: Hi Chaitanya, I installed GEOS succesfful, and copy file geos.dll into my project. But I still got the error: GEOS support not enable when using the method Within Are there something wrongs ? Thanks and regards, Tai -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990028.html Sent from the GDAL - Dev mailing list archive at Nabble.com. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
On 23 July 2012 11:52, taibc taibc_colt...@yahoo.com wrote: I installed GEOS succesfful, and copy file geos.dll into my project. But I still got the error: GEOS support not enable when using the method Within Are there something wrongs ? You need to edit nmake.opt and rebuild GDAL. Check this thread: http://lists.osgeo.org/pipermail/gdal-dev/2010-March/023829.html Best regards, -- Mateusz Loskot, http://mateusz.loskot.net ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Thanks Mateusz, I edited the nmake.opt by adding below lines: GEOS_DIR = C:/geos-3.3.5 GEOS_LIB = $(GEOS_DIR)/src/geos_c_i.lib GEOS_CFLAGS = -I$(GEOS_DIR)/capi -I$(GEOS_DIR)/include/geos -DHAVE_GEOS Then, I rebuilt GDAL, but still got the error: GEOS support not enable. Kind regards, Tai From: Mateusz Loskot [via OSGeo.org] ml-node+s1560n4990029...@n6.nabble.com To: taibc taibc_colt...@yahoo.com Sent: Monday, July 23, 2012 5:56 PM Subject: Re: How to identify a point is belong to a polygon ? On 23 July 2012 11:52, taibc [hidden email] wrote: I installed GEOS succesfful, and copy file geos.dll into my project. But I still got the error: GEOS support not enable when using the method Within Are there something wrongs ? You need to edit nmake.opt and rebuild GDAL. Check this thread: http://lists.osgeo.org/pipermail/gdal-dev/2010-March/023829.html Best regards, -- Mateusz Loskot, http://mateusz.loskot.net ___ gdal-dev mailing list [hidden email] http://lists.osgeo.org/mailman/listinfo/gdal-dev If you reply to this email, your message will be added to the discussion below: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990029.html To unsubscribe from How to identify a point is belong to a polygon ?, click here. NAML -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990235.html Sent from the GDAL - Dev mailing list archive at Nabble.com.___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Tai, If your rebuild was successful with geos, the only reason for you to get the error is that the application is accessing the wrong libraries somewhere in your system. Do a clean rebuild and make sure the LD_LIBRARY_PATH and GDAL_DATA are set correctly. On Tue, Jul 24, 2012 at 7:37 AM, taibc taibc_colt...@yahoo.com wrote: Thanks Mateusz, I edited the nmake.opt by adding below lines: GEOS_DIR = C:/geos-3.3.5 GEOS_LIB = $(GEOS_DIR)/src/geos_c_i.lib GEOS_CFLAGS = -I$(GEOS_DIR)/capi -I$(GEOS_DIR)/include/geos -DHAVE_GEOS Then, I rebuilt GDAL, but still got the error: GEOS support not enable. Kind regards, Tai -- *From:* Mateusz Loskot [via OSGeo.org] [hidden email]http://user/SendEmail.jtp?type=nodenode=4990235i=0 *To:* taibc [hidden email]http://user/SendEmail.jtp?type=nodenode=4990235i=1 *Sent:* Monday, July 23, 2012 5:56 PM *Subject:* Re: How to identify a point is belong to a polygon ? On 23 July 2012 11:52, taibc [hidden email] wrote: I installed GEOS succesfful, and copy file geos.dll into my project. But I still got the error: GEOS support not enable when using the method Within Are there something wrongs ? You need to edit nmake.opt and rebuild GDAL. Check this thread: http://lists.osgeo.org/pipermail/gdal-dev/2010-March/023829.html Best regards, -- Mateusz Loskot, http://mateusz.loskot.net ___ gdal-dev mailing list [hidden email] http://lists.osgeo.org/mailman/listinfo/gdal-dev -- If you reply to this email, your message will be added to the discussion below: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990029.html To unsubscribe from How to identify a point is belong to a polygon ?, click here. NAMLhttp://osgeo-org.1560.n6.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml -- View this message in context: Re: How to identify a point is belong to a polygon ?http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990235.html Sent from the GDAL - Dev mailing list archivehttp://osgeo-org.1560.n6.nabble.com/GDAL-Dev-f3742093.htmlat Nabble.com. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Thanks Chaitanya, I haven't set LD_LIBRARY_PATH and GDAL_DATA yet. Do you know how to set them on Visual C++ 2010 ? Kind regards, Tai From: chaitanya_ch [via OSGeo.org] ml-node+s1560n499024...@n6.nabble.com To: taibc taibc_colt...@yahoo.com Sent: Tuesday, July 24, 2012 10:38 AM Subject: Re: How to identify a point is belong to a polygon ? Tai, If your rebuild was successful with geos, the only reason for you to get the error is that the application is accessing the wrong libraries somewhere in your system. Do a clean rebuild and make sure the LD_LIBRARY_PATH and GDAL_DATA are set correctly. On Tue, Jul 24, 2012 at 7:37 AM, taibc [hidden email] wrote: Thanks Mateusz, I edited the nmake.opt by adding below lines: GEOS_DIR = C:/geos-3.3.5 GEOS_LIB = $(GEOS_DIR)/src/geos_c_i.lib GEOS_CFLAGS = -I$(GEOS_DIR)/capi -I$(GEOS_DIR)/include/geos -DHAVE_GEOS Then, I rebuilt GDAL, but still got the error: GEOS support not enable. Kind regards, Tai From: Mateusz Loskot [via OSGeo.org] [hidden email] To: taibc [hidden email] Sent: Monday, July 23, 2012 5:56 PM Subject: Re: How to identify a point is belong to a polygon ? On 23 July 2012 11:52, taibc [hidden email] wrote: I installed GEOS succesfful, and copy file geos.dll into my project. But I still got the error: GEOS support not enable when using the method Within Are there something wrongs ? You need to edit nmake.opt and rebuild GDAL. Check this thread: http://lists.osgeo.org/pipermail/gdal-dev/2010-March/023829.html Best regards, -- Mateusz Loskot, http://mateusz.loskot.net ___ gdal-dev mailing list [hidden email] http://lists.osgeo.org/mailman/listinfo/gdal-dev If you reply to this email, your message will be added to the discussion below: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990029.html To unsubscribe from How to identify a point is belong to a polygon ?, click here. NAML View this message in context: Re: How to identify a point is belong to a polygon ? Sent from the GDAL - Dev mailing list archive at Nabble.com. ___ gdal-dev mailing list [hidden email] http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E ___ gdal-dev mailing list [hidden email] http://lists.osgeo.org/mailman/listinfo/gdal-dev If you reply to this email, your message will be added to the discussion below: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990248.html To unsubscribe from How to identify a point is belong to a polygon ?, click here. NAML -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990251.html Sent from the GDAL - Dev mailing list archive at Nabble.com.___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Tai, The environment variables can be set at the command prompt temporarily using SET LD_LIBRARY_PATH=C:\path\to\gdal\libraries SET GDAL_DATA=C:\path\to\gdal\libraries\data You can set them in the project settings in VC++. I don't know how. You can also set them system wide at MyComputer-Settings. On Tue, Jul 24, 2012 at 9:50 AM, taibc taibc_colt...@yahoo.com wrote: Thanks Chaitanya, I haven't set LD_LIBRARY_PATH and GDAL_DATA yet. Do you know how to set them on Visual C++ 2010 ? Kind regards, Tai -- *From:* chaitanya_ch [via OSGeo.org] [hidden email]http://user/SendEmail.jtp?type=nodenode=4990251i=0 *To:* taibc [hidden email]http://user/SendEmail.jtp?type=nodenode=4990251i=1 *Sent:* Tuesday, July 24, 2012 10:38 AM *Subject:* Re: How to identify a point is belong to a polygon ? Tai, If your rebuild was successful with geos, the only reason for you to get the error is that the application is accessing the wrong libraries somewhere in your system. Do a clean rebuild and make sure the LD_LIBRARY_PATH and GDAL_DATA are set correctly. On Tue, Jul 24, 2012 at 7:37 AM, taibc [hidden email] wrote: Thanks Mateusz, I edited the nmake.opt by adding below lines: GEOS_DIR = C:/geos-3.3.5 GEOS_LIB = $(GEOS_DIR)/src/geos_c_i.lib GEOS_CFLAGS = -I$(GEOS_DIR)/capi -I$(GEOS_DIR)/include/geos -DHAVE_GEOS Then, I rebuilt GDAL, but still got the error: GEOS support not enable. Kind regards, Tai -- *From:* Mateusz Loskot [via OSGeo.org http://osgeo.org/] [hidden email]http://user/SendEmail.jtp?type=nodenode=4990235i=0 *To:* taibc [hidden email]http://user/SendEmail.jtp?type=nodenode=4990235i=1 *Sent:* Monday, July 23, 2012 5:56 PM *Subject:* Re: How to identify a point is belong to a polygon ? On 23 July 2012 11:52, taibc [hidden email] wrote: I installed GEOS succesfful, and copy file geos.dll into my project. But I still got the error: GEOS support not enable when using the method Within Are there something wrongs ? You need to edit nmake.opt and rebuild GDAL. Check this thread: http://lists.osgeo.org/pipermail/gdal-dev/2010-March/023829.html Best regards, -- Mateusz Loskot, http://mateusz.loskot.net ___ gdal-dev mailing list [hidden email] http://lists.osgeo.org/mailman/listinfo/gdal-dev -- If you reply to this email, your message will be added to the discussion below: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990029.html To unsubscribe from How to identify a point is belong to a polygon ?, click here. NAMLhttp://osgeo-org.1560.n6.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml -- View this message in context: Re: How to identify a point is belong to a polygon ?http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990235.html Sent from the GDAL - Dev mailing list archivehttp://osgeo-org.1560.n6.nabble.com/GDAL-Dev-f3742093.htmlat Nabble.com http://nabble.com/. ___ gdal-dev mailing list [hidden email] http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E ___ gdal-dev mailing list [hidden email] http://lists.osgeo.org/mailman/listinfo/gdal-dev -- If you reply to this email, your message will be added to the discussion below: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990248.html To unsubscribe from How to identify a point is belong to a polygon ?, click here. NAMLhttp://osgeo-org.1560.n6.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml -- View this message in context: Re: How to identify a point is belong to a polygon ?http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4990251.html Sent from the GDAL - Dev mailing list archivehttp://osgeo-org.1560.n6.nabble.com/GDAL-Dev-f3742093.htmlat Nabble.com. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Hi Chaitanya, I still can't run the method Geometry::Within. And I got the error: GEOS support not enable when trying use this method. Please find the attached file for sample code. http://osgeo-org.1560.n6.nabble.com/file/n4989766/Source1.cpp Source1.cpp About spatial filter, you said that: we can use the spatial filter of the ogr layer to filter the point features. But, I think it is used to filter features that geometrically intersect the filter geometry. For example: if I have one polygon A feature, I can use the method SetSpatialFilter to get other features (Point or Polygon) that geometrically *intersect* with A. chaitanya_ch wrote Tai, You can use the spatial filter of the ogr layer to filter the point features to speed things up. You will still have to test if the point is within the polygon but it will be faster. Also, make sure the test is like point-Within(polygon) and not polygon-Within(point) OGRLayer::SetSpatialFilter() http://www.gdal.org/ogr/classOGRLayer.html#a0b4ab45cf97cbc470f0d60474d3e4169 On Fri, Jul 20, 2012 at 9:29 AM, Bui Chi Tai lt;taibc_coltech@gt;wrote: -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4989766.html Sent from the GDAL - Dev mailing list archive at Nabble.com. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Tai, GDAL needs GEOS to perform these geometry functions. Make sure you install that. On Sat, Jul 21, 2012 at 12:19 PM, taibc taibc_colt...@yahoo.com wrote: Hi Chaitanya, I still can't run the method Geometry::Within. And I got the error: GEOS support not enable when trying use this method. Please find the attached file for sample code. http://osgeo-org.1560.n6.nabble.com/file/n4989766/Source1.cpp Source1.cpp About spatial filter, you said that: we can use the spatial filter of the ogr layer to filter the point features. But, I think it is used to filter features that geometrically intersect the filter geometry. For example: if I have one polygon A feature, I can use the method SetSpatialFilter to get other features (Point or Polygon) that geometrically *intersect* with A. chaitanya_ch wrote Tai, You can use the spatial filter of the ogr layer to filter the point features to speed things up. You will still have to test if the point is within the polygon but it will be faster. Also, make sure the test is like point-Within(polygon) and not polygon-Within(point) OGRLayer::SetSpatialFilter() http://www.gdal.org/ogr/classOGRLayer.html#a0b4ab45cf97cbc470f0d60474d3e4169 On Fri, Jul 20, 2012 at 9:29 AM, Bui Chi Tai taibc_coltech@wrote: -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4989766.html Sent from the GDAL - Dev mailing list archive at Nabble.com. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Thanks Chaitanya, I tried to install GEOS on Window. But I got below error: NMAKE fatal error U1077 return code '0x2' Detail is: algorithm\LineIntersector.cpp(671) : error C3861: 'isnan': identifier not found algorithm\LineIntersector.cpp(672) : error C3861: 'isnan': identifier not found algorithm\LineIntersector.cpp(680) : error C3861: 'isnan': identifier not found algorithm\LineIntersector.cpp(681) : error C3861: 'isnan': identifier not found algorithm\LineIntersector.cpp(736) : error C3861: 'isnan': identifier not found algorithm\LineIntersector.cpp(737) : error C3861: 'isnan': identifier not found NMAKE : fatal error U1077: 'C:\Program Files\Microsoft Visual Studio 10.0\VC\BI N\cl.EXE' : return code '0x2' Stop. NMAKE : fatal error U1077: 'C:\Program Files\Microsoft Visual Studio 10.0\VC\BI N\nmake.EXE' : return code '0x2' Stop. chaitanya_ch wrote Tai, GDAL needs GEOS to perform these geometry functions. Make sure you install that. On Sat, Jul 21, 2012 at 12:19 PM, taibc lt;taibc_coltech@gt; wrote: -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4989779.html Sent from the GDAL - Dev mailing list archive at Nabble.com. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Tai, Pease refer to http://trac.osgeo.org/geos/ On Sat, Jul 21, 2012 at 2:06 PM, taibc taibc_colt...@yahoo.com wrote: Thanks Chaitanya, I tried to install GEOS on Window. But I got below error: NMAKE fatal error U1077 return code '0x2' Detail is: algorithm\LineIntersector.cpp(671) : error C3861: 'isnan': identifier not found algorithm\LineIntersector.cpp(672) : error C3861: 'isnan': identifier not found algorithm\LineIntersector.cpp(680) : error C3861: 'isnan': identifier not found algorithm\LineIntersector.cpp(681) : error C3861: 'isnan': identifier not found algorithm\LineIntersector.cpp(736) : error C3861: 'isnan': identifier not found algorithm\LineIntersector.cpp(737) : error C3861: 'isnan': identifier not found NMAKE : fatal error U1077: 'C:\Program Files\Microsoft Visual Studio 10.0\VC\BI N\cl.EXE' : return code '0x2' Stop. NMAKE : fatal error U1077: 'C:\Program Files\Microsoft Visual Studio 10.0\VC\BI N\nmake.EXE' : return code '0x2' Stop. chaitanya_ch wrote Tai, GDAL needs GEOS to perform these geometry functions. Make sure you install that. On Sat, Jul 21, 2012 at 12:19 PM, taibc taibc_coltech@ wrote: -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501p4989779.html Sent from the GDAL - Dev mailing list archive at Nabble.com. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Tai, You can use the spatial filter of the ogr layer to filter the point features to speed things up. You will still have to test if the point is within the polygon but it will be faster. Also, make sure the test is like point-Within(polygon) and not polygon-Within(point) OGRLayer::SetSpatialFilter() http://www.gdal.org/ogr/classOGRLayer.html#a0b4ab45cf97cbc470f0d60474d3e4169 On Fri, Jul 20, 2012 at 9:29 AM, Bui Chi Tai taibc_colt...@yahoo.comwrote: Chaitanya, I am checking my code. Maybe it is not successful because I used two different layers (of one file). As you know, one .dgn files only has one layer, that include many features, and Texts (Point Geometry), Polygons are treated as features. My idea is: First, I will read each feature to identify whether this feature is a polygon. Then, I need to use a loop to read and check all features of layer to identify whether a Text (point) is belong to that polygon. But, this will affect to the first reading times, and give unexpected result. Do you have any ideas ? Thanks and regards, Tai -- *From:* Chaitanya kumar CH chaitanya...@gmail.com *To:* Bui Chi Tai taibc_colt...@yahoo.com *Sent:* Friday, July 20, 2012 10:39 AM *Subject:* Re: [gdal-dev] How to identify a point is belong to a polygon ? Tai, I don't understand why it would happen. Can you provide some more details? Code, data? On Fri, Jul 20, 2012 at 9:05 AM, Bui Chi Tai taibc_colt...@yahoo.comwrote: Thanks Chaitanya, I am trying to use this method. But, it is not successful. For example: One file .dgn includes Text (treated as a point geometry) and Shapes (Polygon). I used the method OGRGeometry::Within(OGRGeometry * other) to identify whether the Text is belong to the polygon. But it doesn't return an expected result (Actually, there are some texts that belong to each polygon). Kind regards, Tai -- *From:* Chaitanya kumar CH chaitanya...@gmail.com *To:* taibc taibc_colt...@yahoo.com *Cc:* gdal-dev@lists.osgeo.org *Sent:* Friday, July 20, 2012 10:11 AM *Subject:* Re: [gdal-dev] How to identify a point is belong to a polygon ? Tai, You can use OGR_G_Within() OGR_G_WIthin(point,polygon) will return true if the point is within the polygon. You can access various other geometry functions from the OGRGeometry class. http://www.gdal.org/ogr/ogr__api_8h.html#a80ba9e516ccae381ae7240cc9684eb72 On Fri, Jul 20, 2012 at 7:04 AM, taibc taibc_colt...@yahoo.com wrote: Hi everyone, Do you know how to identify whether a point (OGRPoint) is belong to a polygon (OGRPolygon) ? (the polygon covers the point) Thanks and regards, Tai -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501.html Sent from the GDAL - Dev mailing list archive at Nabble.comhttp://nabble.com/ . ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
[gdal-dev] How to identify a point is belong to a polygon ?
Hi everyone, Do you know how to identify whether a point (OGRPoint) is belong to a polygon (OGRPolygon) ? (the polygon covers the point) Thanks and regards, Tai -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501.html Sent from the GDAL - Dev mailing list archive at Nabble.com. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] How to identify a point is belong to a polygon ?
Tai, You can use OGR_G_Within() OGR_G_WIthin(point,polygon) will return true if the point is within the polygon. You can access various other geometry functions from the OGRGeometry class. http://www.gdal.org/ogr/ogr__api_8h.html#a80ba9e516ccae381ae7240cc9684eb72 On Fri, Jul 20, 2012 at 7:04 AM, taibc taibc_colt...@yahoo.com wrote: Hi everyone, Do you know how to identify whether a point (OGRPoint) is belong to a polygon (OGRPolygon) ? (the polygon covers the point) Thanks and regards, Tai -- View this message in context: http://osgeo-org.1560.n6.nabble.com/How-to-identify-a-point-is-belong-to-a-polygon-tp4989501.html Sent from the GDAL - Dev mailing list archive at Nabble.com. ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
