I was running out of RAM and out of swap while trying to generate a copc out of a laz with #pdal (the laz weighs 4.7GB). So I created a 15GB swapfile by simply adding

swapDevices = [{
device = "/var/lib/swapfile_15G";
size = 15*1024;
}];

to configuration.nix, rebuild, and voilà. The process is currently running very smoothly, peak consuming the whole RAM as expected (64GB) + 12GB out of the available 24GB.

cc @sguimmara @autra

#linux #nixos #pointcloud #lidar

🚀 Today, I'm running a workshop on #PointCloud Processing in #QGIS at #FOSS4GEurope 2025 in #Mostar! We'll dive into:
🔹️ Downloading & preprocessing data
🔹️ Creating DSMs with interpolation
🔹️ 3D visualization & styling
🔹️ Elevation profiles & filtering
🔹️ Automation with #PDAL Wrench
🔹️ Editing point clouds

💻 Can’t join in person? Free access at @gisocw
🔗https://courses.gisopencourseware.org/

Celebrate Open Education Week 2025!🎉

Today's highlight from GIS OpenCourseWare: Point Cloud Processing with QGIS & PDAL Wrench. Learn to work with point cloud data and automate workflows for faster, efficient processing. 🚀 #OpenEducationWeek #OEWeek2025 #GIS #QGIS #PointCloud #PDAL

Yesterday I used #PDAL to process over 2k million #LiDAR points from #Guadalajara 🇲🇽. First I merged the 181 LiDAR tiles (16gb) from lidar.guadalajara.gob.mx, then I generated the digital surface model #DSM with #IDW at 50 cm/px.

writers.las & writers.gdal  

How I did it:

https://vm.tiktok.com/ZMhfnM7C8/

#GIS 🗺️

It's lovely to be in such great company 🤩

#pdal #perfectin #qfield @qfield #rspatial #rasterframes #osgeo

https://www.osgeo.org/projects/ (page 9)

🌐 Vous cherchez à distinguer le sol et le sursol à l’aide de données #LiDAR ? Découvrez comment @Data_Wax a expérimenté l’utilisation de #pdal sur les données brutes du #LiDAR HD de l’@ignfrance : https://geotribu.fr/articles/2024/2024-06-24_lidar_hd_avec_pdal/

👓 Relecture : @geojulien, @GabPoujol, N. Godet, J. Hanke

🎯 #LiDAR #pdal #MNT #MNS #MNE