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--></style></head><body lang=EN-GB link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi Andrew,</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>You’re totally right, I had put the .dll in the same folder as the executable rather than in one of the specified locations.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Many thanks for your help,</p><p class=MsoNormal>Stephen</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='border:none;padding:0cm'><b>From: </b><a href="mailto:andrew.bell.ia@gmail.com">Andrew Bell</a><br><b>Sent: </b>18 December 2017 12:37<br><b>To: </b><a href="mailto:pidgeon13@googlemail.com">Stephen Pidgeon</a><br><b>Cc: </b><a href="mailto:pdal@lists.osgeo.org">pdal@lists.osgeo.org</a><br><b>Subject: </b>Re: [pdal] Linking with PCL</p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Stephen,</p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>If I understand, you're building your own executable using the code that you referenced. The executable you created must be able to find the PCL plugin in one of these directories: <span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#404040;background:#FCFCFC'>“.”, “./lib”, “../lib”, “./bin”, “../bin” relative to your executable path. You can also explicitly set PDAL_DRIVER_PATH to the location of the driver.</span></p></div></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Mon, Dec 18, 2017 at 5:17 AM, <<a href="mailto:pidgeon13@googlemail.com" target="_blank">pidgeon13@googlemail.com</a>> wrote:</p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>When I run pdal –drivers in the command prompt it does list the filter as being found. My configuration script sets PCL to build and libpdal_plugin_filter_voxelgrid.dll has been created in the bin folder.</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986" target="_blank">Mail</a> for Windows 10</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From: </b><a href="mailto:andrew.bell.ia@gmail.com" target="_blank">Andrew Bell</a><br><b>Sent: </b>15 December 2017 12:57<br><b>To: </b><a href="mailto:pidgeon13@googlemail.com" target="_blank">Stephen Pidgeon</a><br><b>Cc: </b><a href="mailto:pdal@lists.osgeo.org" target="_blank">pdal@lists.osgeo.org</a><br><b>Subject: </b>Re: [pdal] Linking with PCL</p></div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The StageFactory must be able to locate the plugin. See the second question in the FAQ: <a href="https://www.pdal.io/faq.html" target="_blank">https://www.pdal.io/faq.html</a></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Fri, Dec 15, 2017 at 4:44 AM, <<a href="mailto:pidgeon13@googlemail.com" target="_blank">pidgeon13@googlemail.com</a>> wrote:</p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hi,</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I am trying to use the voxelgrid filter in some c++ code I am writing (and would also like to be able to read and write .pcd files). I believe I have linked in PCL correctly, and my solution builds the plugin .dll files. However, although there is plenty of information on the PDAL website about using PCL in pipelines, I have not managed to find anything to help me use the API. I currently have a function I am playing around with to try and get the filter to work:</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>bool ReadFilterWrite(const std::string& inputfilename, const std::string& readerdriver, const std::string& outputfilename)</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>{</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> bool bFilterWorks=false;</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pdal::StageFactory factory;</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pdal::PointTable table;</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pdal::Stage *pReader = factory.createStage(readerdriver);</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pdal::Options readerOptions;</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> readerOptions.add("filename", inputfilename);</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> if (pReader)</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> {</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pReader->setOptions(readerOptions);</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> }</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> else</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> {</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> return false;</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> }</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pdal::Options writerOptions;</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> writerOptions.add("filename", outputfilename);</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pdal::Stage *pWriter = factory.createStage("writers.text");</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> if (pWriter)</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> {</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pdal::Stage *pFilter = factory.createStage("filters.voxelgrid");</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> if (pFilter)</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> {</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> bFilterWorks = true;</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pFilter->setInput(*pReader);</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pWriter->setInput(*pFilter);</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> }</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> else</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> {</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> //Currently commented out so that files are only written if the filter works.</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> //pWriter->setInput(*pReader);</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> return false; //Temporary, currently where the function exits.</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> }</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pWriter->setOptions(writerOptions);</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pWriter->prepare(table);</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> pWriter->execute(table);</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> }</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> return bFilterWorks;</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>}</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The function reads the data in from a .las file (for example) fine, but then doesn’t create the filter stage. Am I going about this in the right way?</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Best regards,</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Stephen</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986" target="_blank">Mail</a> for Windows 10</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><br>_______________________________________________<br>pdal mailing list<br><a href="mailto:pdal@lists.osgeo.org" target="_blank">pdal@lists.osgeo.org</a><br><a href="https://lists.osgeo.org/mailman/listinfo/pdal" target="_blank">https://lists.osgeo.org/mailman/listinfo/pdal</a></p></blockquote></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><br><br clear=all></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>-- </p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Andrew Bell<br><a href="mailto:andrew.bell.ia@gmail.com" target="_blank">andrew.bell.ia@gmail.com</a></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p></div></div></div></div></blockquote></div><p class=MsoNormal><br><br clear=all></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- </p></div><p class=MsoNormal>Andrew Bell<br><a href="mailto:andrew.bell.ia@gmail.com" target="_blank">andrew.bell.ia@gmail.com</a></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>