20
votes
QGIS 2.14.1 LAStools install error: "wrong value for parameter 'Msys folder'..."
According to Diego Alonso's comments from the mappingGIS blog1, this error is related to QGIS version 2.14. With the upgrade, the standalone installer eliminated the msys folder from GRASS 7 ...
- 10.3k
16
votes
Difference between LAStools, libLAS and PDAL?
The answer by Howard Butler pretty much sums it up. Some more background. When I created the first LAStools and the LASlib library that the tools are build upon I was a postdoc at UC Berkeley and ...
- 1,184
14
votes
Accepted
LAStools plugin in QGIS: ''The system cannot find the path specified."
Be aware one needs to have the LAStools plugin installed, but also the software per se.
The LAStools plugin description says:
... . You also need to download the LAStools software from http://...
- 10.3k
13
votes
Accepted
Difference between LAStools, libLAS and PDAL?
libLAS was developed to provide read/write support for LAS and it was modeled on LAStools which at the time was not released under an open source license. In the subsequent years, many parts of ...
- 4,033
9
votes
Installing LAStools in QGIS 3.0?
Install QGIS 3.2 and goto the plugin manager. A brand-spanking new set of LAStools toolboxes can be found by searching for LAStools in the Plugin repository or download the latest version here:
http:/...
- 1,184
7
votes
QGIS 2.14.1 LAStools install error: "wrong value for parameter 'Msys folder'..."
2.18 user here - After many hours of trying to get the LAStools product functional I finally found this solution to the \msys error - namely to simply add the folder as suggested here - works BUT I ...
- 223
6
votes
Coordinate transformation in LAStools?
A library that can read LAS data and links with proj.4 is the easiest way to project data and apply datum transformations. Both libLAS and PDAL support this linkage.
Assuming the RSO Malaysia ...
- 4,033
6
votes
Installing LAStools in QGIS 3.0?
The Lidartools provider was removed from QGIS 3.0. See the QGIS 3.0.0 changelog: http://changelog.qgis.org/en/qgis/version/3.0.0/#removed-otb-lidartools-providers-from-processing
As long as nobody ...
- 2,095
5
votes
QGIS 2.14.1 LAStools install error: "wrong value for parameter 'Msys folder'..."
It's 2018 with the new QGIS 3 I had this issue with GRASS Folder.
I just had to repoint the GRASS folder and GRASS Docs folder to the right directories as shown in the screenshot.
- 91
5
votes
QGIS 2.14.1 LAStools install error: "wrong value for parameter 'Msys folder'..."
I added empty folder "Mysys" in the path and it worked...
3
votes
Accepted
Sending arguments to LAStools function from Python script not working
I've had the same problem with the subprocess module, attempting to multi-thread a process, and I've found that breaking up the arguments into individual components where spaces exit seems to work... ...
- 25.6k
3
votes
Coordinate transformation in LAStools?
About three months ago LAStools was updated to provide support for most EPSG codes to offer more ways to re-project with las2las. However, there are still two limitations: (1) the re-projection must ...
- 1,184
3
votes
Removing las2dem streaks from raster DEM?
As mentioned by Aaron, two options are:
i) acquiring a licensed version from LAStools which won't add the streaks in the DEM from the las2dem tool.
ii) using an alternative [free] software. For ...
- 10.3k
3
votes
Accepted
Is there any documentation on how to change the user interface of Potree?
The first one is from Potree 1.3, where all the available stuff fit into a dat.gui panel (top-right), whereas the second link is from Potree 1.5RC, where everything has been stacked into the sidebar ...
- 493
3
votes
Creating DEM from multiple .las files using LAStools in ArcMap?
Create a LAS dataset. You can add files to this dataset by folder, so you don't have to manually add all 500 files. Use the "LAS Dataset to Raster" tool. It will give you a raster from the input.
- 428
3
votes
Accepted
LAStools menu seems to be incomplete in QGIS?
One needs the program called "Wine" in order to have all the geoalgorithms of LAStools available to QGIS on the Mac OS X.
In accordance with information gleaned from the discussion threads at ...
- 1,096
3
votes
Accepted
Different results in metrics calculated with LAStools and lidR
Regarding the number of voxel this may be explained by the alignment of the voxels. lidR centers the voxel at res/2 meaning that the bottom of the ground voxel is at 0 not the center. If LAStools has ...
- 9,419
3
votes
In which step should we reproject a LiDAR Dataset using LAStools when extracting DSM and DTM?
I had never before used lastools to reproject, so I was going by This when I said las2las wouldn't re-project. But I tried just now to use las2las to re-project a EPSG:6578 NAD83(2011)/Texas Central(...
- 1,045
2
votes
Using python to batch process lasclip - LAStools/QGIS
I have not yet used LAStools in QGIS via a Python command line (only via the toolbox). Maybe create the same query via the toolbox and then look at the log output to see how to correctly formulate the ...
- 1,184
2
votes
Accepted
Importing LAS files in QGIS with LAStools gives an 'ascii encode error'
All directory names and all file names must be free of spaces and other special symbols and cannot be Unicode characters. Only good old ASCII file and directory names are supported by LAStools at the ...
- 1,184
2
votes
Finding the origin in .laz file with LAStools
The sample record you show is in projected coordinates and the two values for longitude and latitude listed in the Coordinate Reference System (CRS) are part of the parameters that defined the ...
- 1,184
2
votes
Accepted
LAStools blast2dem: error writing data for field "StripOffsets"
The above error means that the output TIFF generated by BLAST is too large (more than 2GB or more than a certain number of rows or columns) to be stored as a TIF file. Use the IMG format instead that ...
- 1,184
2
votes
Can't normalize LiDAR point cloud with lasheight and -replace z (LAStools)
Note the correct notation is -replace_z with an underline "_" before z (not -replace z).
Certify what you are using as the reference for normalization; i.e.; you need something to subtract ...
- 10.3k
2
votes
Accepted
Manually editing a LiDAR cloud to remove non ground points
You want to remove non ground points in the scene, but your LiDAR cloud is unclassified. Therefore, instead of doing this manually, use some customized tools for such tasks.
For classifying the point ...
- 10.3k
2
votes
Accepted
Keeping only ground points (class 2) with lasground in QGIS 2.14?
The command line for using lasground keeping only ground points is:
lasground -i input.las -o output.las -keep_class 2
Don't forget to specify the paths to the lasground tool and the input/output ...
- 10.3k
2
votes
QGIS 2.14.1 LAStools install error: "wrong value for parameter 'Msys folder'..."
Hopefully this may be of some value to QGIS 2.14+ users trying to install LAStools. The "Processing > Options > Providers > Tools for LiDAR data" dialog does work, but it takes a bit of a kabuki dance ...
- 618
2
votes
Accepted
Using Python to send arguments to LAStools basics
Now that your question is open again I can provide some code. In your linked answer I wrote a batch file then called the batch file, that works, but to call directly from python:
lasheight = r"c:\...
- 25.6k
2
votes
Classifying LiDAR data to mid vegetation using LAStools?
You can use lasheight to classify points at different intervals above ground, assuming you have already classified ground points. For example 0-1 meter above ground -> low veg, and 1-6 meter above ...
- 5,797
2
votes
Accepted
Converting LiDAR .las to .xyz with LAStools outputs incorrect projected coordinates?
I didn't expect that this would be the answer, but it turns out that las2las uses the UTM latitude band letters rather than the hemisphere 'N' (North) or 'S' (South) letters with the zone number. ...
- 18.9k
2
votes
access r.in.lidar through pyGIS console
You might miss it in the installation. I noticed it in my installation and I asked about: Which QGIS installation for Windows comes with r.in.lidar?
- 3,230
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