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--></style></head><body lang=EN-GB link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi,</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>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><o:p> </o:p></p><p class=MsoNormal>bool ReadFilterWrite(const std::string& inputfilename, const std::string& readerdriver, const std::string& outputfilename)</p><p class=MsoNormal>{</p><p class=MsoNormal> bool bFilterWorks=false;</p><p class=MsoNormal> pdal::StageFactory factory;</p><p class=MsoNormal> pdal::PointTable table;</p><p class=MsoNormal> pdal::Stage *pReader = factory.createStage(readerdriver);</p><p class=MsoNormal> pdal::Options readerOptions;</p><p class=MsoNormal> readerOptions.add("filename", inputfilename);</p><p class=MsoNormal> if (pReader)</p><p class=MsoNormal> {</p><p class=MsoNormal> pReader->setOptions(readerOptions);</p><p class=MsoNormal> }</p><p class=MsoNormal> else</p><p class=MsoNormal> {</p><p class=MsoNormal> return false;</p><p class=MsoNormal> }</p><p class=MsoNormal> pdal::Options writerOptions;</p><p class=MsoNormal> writerOptions.add("filename", outputfilename);</p><p class=MsoNormal> pdal::Stage *pWriter = factory.createStage("writers.text");</p><p class=MsoNormal> if (pWriter)</p><p class=MsoNormal> {</p><p class=MsoNormal> pdal::Stage *pFilter = factory.createStage("filters.voxelgrid");</p><p class=MsoNormal> if (pFilter)</p><p class=MsoNormal> {</p><p class=MsoNormal> bFilterWorks = true;</p><p class=MsoNormal> pFilter->setInput(*pReader);</p><p class=MsoNormal> pWriter->setInput(*pFilter);</p><p class=MsoNormal> }</p><p class=MsoNormal> else</p><p class=MsoNormal> {</p><p class=MsoNormal> //Currently commented out so that files are only written if the filter works.</p><p class=MsoNormal> //pWriter->setInput(*pReader);</p><p class=MsoNormal> return false; //Temporary, currently where the function exits.</p><p class=MsoNormal> }</p><p class=MsoNormal> pWriter->setOptions(writerOptions);</p><p class=MsoNormal> pWriter->prepare(table);</p><p class=MsoNormal> pWriter->execute(table);</p><p class=MsoNormal> }</p><p class=MsoNormal> return bFilterWorks;</p><p class=MsoNormal>}</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>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><o:p> </o:p></p><p class=MsoNormal>Best regards,</p><p class=MsoNormal><o:p> </o:p></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></body></html>