<div dir="ltr">The problem with this is that there are lots of ways to decimate and it would complicate the logic of the readers in order to fulfill this desire.<div><br></div><div>One simple thing you can do is to create a decimated file using streaming mode and then use that as input to your more complex pipeline:</div><div><br></div>{<div> "pipeline": [</div><div> "input.las",</div><div> {</div><div> "type" : "filters.decimation",</div><div> "step" : 10</div><div> }"</div><div> "output.las"</div><div> ]</div><div>}</div><div><br></div><div>Then run this with 'pdal pipeline --stream decimator.json'</div><div><br></div><div>If your processing pipeline supports streaming mode directly, you can use that as well and dispense with the creation of the intermediate file.</div><div><br></div><div>Hope that helps,</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jun 15, 2017 at 10:18 AM, GUIMMARA, Sébastien (External) <span dir="ltr"><<a href="mailto:sebastien.guimmara.external@airbus.com" target="_blank">sebastien.guimmara.external@airbus.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span lang="EN-US">Hello everyone,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">I’m trying to import a massive point cloud as a collection of LAS files (6GB, 27 files), and I realized that my desktop computer simply couldn’t handle the memory footprint of such a massive dataset.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">So I’m putting a decimation filter to reduce the size, but I’m having a doubt: is the filter useful here or is the dataset entirely loaded into memory before even applying the filter ? In other words, does the downstream
filters controls how the upstream reader loads data into memory ?<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">If not, would it be a nice feature to include to some (all ?) readers ? Like a builtin decimation/sampling filter.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Sébastien<u></u><u></u></span></p>
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