Questions tagged [pdal]
PDAL (Point Data Abstraction Library) provides both a suite of command-line applications and programming library for the processing, filtering, translation, and querying of point cloud data in a pipeline fashion that allows complex processing chains to be put together simply.
126
questions
0
votes
0
answers
27
views
How to use a calculated variable within a PDAL pipeline
I'm using a pdal pipeline in a python project.
What I want to do is load a file (text format), calculate its resolution, then use its resolution in a filters.faceraster to create a tif. I have no ...
- 1
0
votes
1
answer
49
views
PDAL Translates Removes LAS Attributes
I am using PDAL (pdal 2.7.1 (git-version: Release)) "Translate" for assigning a CRS to my ALS pointcloud (format LAS; point format 6).
However, everything works fine, but some Attributes (...
0
votes
1
answer
34
views
What is the correct way to verify pdal plugins (.e57 reader) in OSGeo4W shell?
When running the command pdal info "Z:\myE57pointcloud.e57" --summary
inside the OSGeo4W (Windows) shell, I receive the error:
PDAL: Couldn't create reader stage of type 'readers.e57'.
You ...
- 996
1
vote
0
answers
29
views
QGIS/PDAL: Selecting/tagging equally-spaced subset of point data
I have a set of high-density bathymetric point data with a maximum density of 30m. I now want to select or otherwise differentiate a subset of these points, evenly distributed throughout the set at an ...
- 11
1
vote
1
answer
71
views
QGIS: batch assigning CRS for point clouds
I got a bunch of LAZ compressed point cloud tiles (over 300). They don't have a projection assigned. I want to assign the correct projection (I know the files are in EPSG:25832) with the action "...
- 121
0
votes
1
answer
42
views
PDAL writers.raster: set bounds
Is anyone aware of a method to set the bounds of a GTiff in the PDAL writers.raster similar to the method in writers.gdal? The idea is to ensure the output raster is the same bounds as the input las.
...
- 11
0
votes
0
answers
43
views
How would you maintain the vlrs value of xyz point cloud file while converting it to las and then finally to COPC
I am trying to convert the point cloud files that I have to COPC and starting with converting all files that we have( currently xyz) to las and then proceed to COPC conversion from las using PDAL, ...
- 1
0
votes
0
answers
69
views
Getting max value of "HeightAboveGround" inside polygons from point cloud
I have geojson file with polygons of tree locations and labels "Tree" (~5,300 polygons). And point cloud made from aerial images and points have extra information "HeightAboveGround&...
- 1
1
vote
1
answer
51
views
PDAL output precision
A similar question with different output is already asked (Do i lost precision when importing LAS files with PDAL?)
Anyway, I’m just doing classification with PDAL and my output has only 2 decimals (...
- 21
0
votes
1
answer
30
views
How to remove VLRs from header?
I want to create a .las file without any VLR using pdal.
Apparently, two VLR are automatically created by the writer.
That happens even with the las writer option "pdal_metadata" set to ...
1
vote
0
answers
328
views
QGIS install error message (Ubuntu)
I work on Ubuntu 22.04.03 LTS.
I succeed many weeks ago to install/use QGIS Lima 3.32.2 on this station.
But I was facing to several error message when I tried to install/use some plugins (dataPlotly, ...
- 929
0
votes
1
answer
62
views
Why assigning to Z does not work with PDAL
I'm converting a CSV file to a LAZ(copc) format. My third column represent Z, but is called band_1. This shouldn't be a problem. Now I want to assign that to Z of the LAZ. But for some reason when I ...
- 33
1
vote
1
answer
194
views
PDAL mesh pipeline producing poor mesh results and losing precision
Intro:
What I want to do is:
read in a las file
crop the las around a specific point in space (probably using a radius)
generate a mesh with cropped points using poisson
The PDAL pipeline below ...
0
votes
1
answer
144
views
Issue converting .ply to LAS then LAS to COPC , losing colour information
Using PDAL to convert .ply file with colour information to LAS, I can verify I see the colour information in cloud compare.
However, when converting the LAS to COPC , I'm losing the colour information ...
0
votes
0
answers
98
views
PDAL translation seems to be causing a scaling
I'm trying to georeference a .laz pointcloud in order to correctly show it in QGIS on a map. I notice however that while using the pdal transformation, there is a change in the scale of the point ...
- 1