<div dir="ltr">Sounds like you could do this in raster land since you are interested in 1x1 meter cells. Perhaps the GDAL writer (<a href="https://pdal.io/stages/writers.gdal.html">https://pdal.io/stages/writers.gdal.html</a>) with a `resolution` of 1 and an `output_type` of "max". And then to reinterpret your output as a point cloud: the GDAL reader (<a href="https://pdal.io/stages/readers.gdal.html">https://pdal.io/stages/readers.gdal.html</a>).<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Aug 14, 2020 at 3:12 PM Alison Cramer <<a href="mailto:alisoncramer@nevada.unr.edu">alisoncramer@nevada.unr.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><span style="color:rgb(0,0,0);font-family:Verdana,Geneva,Helvetica,Arial,sans-serif;font-size:13.44px">I have a point cloud of an abandoned mine land with a waste rock pile. The waste rock pile has rills (soil removed by erosion) caused by large rainfall events. This causes differences in elevation (z values) within 1 square meter. I would like to perform a moving window of 1m along the waste rock pile. This would hopefully give me "cells" of 1m by 1m. My goal is to find the maximum z value in every 1m cell. Once I find the max z value in each 1m cell, I would like to replace the current z values with the specific maximum z value calculated for each cell. Then export to a new point cloud. Does anyone have an idea as to how I would go about this in pdal? </span><br></div></div>
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