Skip to main content

Questions tagged [laz]

It is the compressed version of lidar las files from the open source software LASzip

18 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
4 votes
4 answers
388 views

How can I find the Point Cloud Tools in QGIS 3.34 Mac Version?

I just downloaded the QGIS Latest Release Version 3.34 (Prizren) for Mac to try the new Point Cloud tools, that should be natively available according to this post: https://www.lutraconsulting.co.uk/...
Enzo Baldini's user avatar
  • 2,337
3 votes
0 answers
2k views

Problem with opening .las files in QGIS

For the last few days I tried to open .las Files from my work into QGIS. I have heard that the newest version of QGIS is able to open .las .laz files without any problem. The problem is that the ...
PSKL's user avatar
  • 39
2 votes
1 answer
321 views

Ground extraction from laz

I have got laz file without classification However everything what I can extract with pdal is this: Seems like the algorithm detects everything as ground. The code is following: pipeline = [ "/...
Марина Лисниченко's user avatar
1 vote
1 answer
40 views

How do I filter out Unclassified points from a LAS file and generate contours and a .dem file in QGIS?

I downloaded lidar data from https://gis1.oit.ohio.gov/geodatadownload/ and imported a LAS file into QGIS. I want to generate contours and a .dem file from the Ground data. I have been able to ...
Matt25's user avatar
  • 11
1 vote
0 answers
72 views

How to create a virtual point cloud (VPC) with S3 URLs to read COPC files in QGIS 3.32?

I have been converting LAS files (pdrf 6) to COPC using QGIS 3.32. It then reads well in QGIS but doesn't once uploaded on AWS S3. The bucket is not public, so I have tried to input AWS_ACCESS_KEY_ID ...
Leo's user avatar
  • 701
1 vote
0 answers
366 views

PDAL: Unable to open stream for ' '

I tried to run a batch process for pdal pipeline, however I always get a en error: PDAL: Unable to open stream Below is the pipeline and the batch code: { "pipeline": [ {"...
David's user avatar
  • 11
1 vote
1 answer
314 views

Potree : Save user interactions

I am a new user of Potree and I would like to know if anyone has already an idea or found a way to save a user's interactions on Potree and use them again. For example: if the user added an annotation ...
Imane Hammoudy's user avatar
1 vote
0 answers
376 views

PDAL colorizing LAZ with GeoTIFF

I understand the example from PDAL workshop and it works well. However since I puzzle around with some data and find most effective way to use it I thought I might ask for some opinions here. I do ...
Kalle's user avatar
  • 41
1 vote
0 answers
210 views

entwine build produces a strange value for bounds in ept.json

I am relatively new to entwine. In our project, we have a requirement to build entwine from Laz dataset in EPSG:4326. I understand it might sound weird that we have this dataset in geographic ...
kswp's user avatar
  • 11
1 vote
0 answers
209 views

Reclassify points within a bounding box with PDAL

I have a list of 3D bounding boxes manually drawn around noise points and I want to reclassify them as noise. One option would be to simply drop them but, in this particular case, I would want to have ...
Fabio Picchi's user avatar
0 votes
0 answers
84 views

Trouble reading LAZ downloaded from NOAA LiDAR database

I am attempting to download the raw point cloud of a LiDAR acquisition from NOAA's Office of Coastal Management's LiDAR database using R. The data download with out error, but when I read in the laz ...
Sean McKenzie's user avatar
0 votes
0 answers
117 views

Laspy LAZ exported files with extra dimensions and QGIS name mangling

I'm writing a LAZ file with laspy, and I include some extra dimensions named bx, by, bz and b. They are all np.float64 (I used the version 1.4 and point format 3). The file is properly created but ...
Florian Stasse's user avatar
0 votes
0 answers
91 views

Serve LAS/LAZ data from server to frontend

I have the following architecture: Frontend: Vue3 w. OpenLayers7 (Typescript) Backend: FastAPI (Python) WebMapServer: GeoServer 2.23 I would like to display LAS/LAZ LIDAR data through Potree and I'd ...
FloCAD's user avatar
  • 33
0 votes
0 answers
55 views

Incorrect loading of a .laz file in QGIS

I would like to open a .laz file in QGIS. This is probably not loaded completely. For example, no statistics are shown to me in the layer properties. Also, no ept.json file is created and the ept-data ...
ToSa's user avatar
  • 1
0 votes
1 answer
146 views

Output of Point Cloud Cropping using PDAL displaying as straight line

I am cropping my point cloud (.las) using PDAL, when i display my original point cloud it looks like this, But after i crop it, the output looks like this, i.e. a straight line in viewer mode. Here ...
Ahsan Mukhtar's user avatar
0 votes
0 answers
250 views

Convert LAS tool hangs at 2%

I'm trying to convert LiDAR data from .LAZ to .LAS using the Convert LAS tool in ArcGIS Pro, but it always stops at 2% and is never able to complete the decompression. Does anyone have any thoughts ...
sealark's user avatar
  • 13
0 votes
0 answers
117 views

TIN-Interpolation always crashing, user error?

Perhaps you can help figure this out, maybe i just overlook something. So i have a point cloud which a imported from a lidar-data-file (laz). Now, to generate a raster data set, i planned on using the ...
zrrrn's user avatar
  • 1
0 votes
0 answers
385 views

Turn point cloud into rasterized mesh with PDAL-C and it's API

I'm triyng to turn a point cloud into a mesh that's rasterized like the code in c# below describes but I have come to the problem that the filter delaunay does not work with a raster, only with a ...
creepercrack's user avatar