Error while executing Lasview

[Giovanni Francesco Ricci]

Hello i'm trying to open a point cloud file (.las) with lasview and i get this error.

anybody has some suggestion?

QGIS code revision: 386f2583

Qt version: 5.15.13

Python version: 3.12.8

GDAL version: 3.10.1

GEOS version: 3.13.0-CAPI-1.19.0

PROJ version: Rel. 9.5.1, December 1st, 2024

PDAL version: 2.8.3 (git-version: 56e405)

Algorithm started at: 2025-04-03T10:54:38

Algorithm 'lasview (file)' starting…

Input parameters:

{ 'ADDITIONAL_OPTIONS' : '', 'COLORING' : 0, 'GUI' : False, 'INPUT_LASLAZ' : 'C:\\Users\\Proprietario\\Documents\\SatPoint\\Studio\\2025-04-02_15-25-52 Copy\\colorized.las', 'POINTS' : 5000000, 'SIZE' : 0, 'VERBOSE' : False }

LAStools command line

C:\LAStools\bin\lasview -i "C:\Users\Proprietario\Documents\SatPoint\Studio\2025-04-02_15-25-52 Copy\colorized.las" -points 5000000

LAStools console output

Traceback (most recent call last):
File "C:\Users/Proprietario/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\LAStools\lastools\core\visualization_colorization\lasview.py", line 81, in processAlgorithm
LastoolsUtils.run_lastools(commands, feedback)
File "C:\Users/Proprietario/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\LAStools\lastools\core\utils\utils.py", line 75, in run_lastools
feedback.pushConsoleInfo(output.decode("utf-8"))
^^^^^^^^^^^^^^^^^^^^^^
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8a in position 30: invalid start byte

Execution failed after 0.06 seconds

Loading resulting layers

Algorithm 'lasview (file)' finished

[LAStools - efficient tools for LiDAR processing]

Hi 

Giovanni,

just remove the "space" char out of your input path and it should work.

Try something more simple like

   "C:\Users\Proprietario\Documents\SatPoint\Studio\2025-04-02_15-25-52_Copy\colorized.las"

or best

   "C:\data\colorized.las"

as input file.

If you just want to view a file you also can try laslook as viewer for LAS/LAZ data, which is able to process path with spaces or utf8 chars in it.

Cheers,

Jochen @rapidlasso

[Giovanni Francesco Ricci]

i still get this Loading resulting layers

Algorithm 'lasview (file)' finished

QGIS version: 3.34.15-Prizren

QGIS code revision: 386f2583

Qt version: 5.15.13

Python version: 3.12.8

GDAL version: 3.10.1

GEOS version: 3.13.0-CAPI-1.19.0

PROJ version: Rel. 9.5.1, December 1st, 2024

PDAL version: 2.8.3 (git-version: 56e405)

Algorithm started at: 2025-04-03T12:34:24

Algorithm 'lasview (file)' starting…

Input parameters:

{ 'ADDITIONAL_OPTIONS' : '', 'COLORING' : 0, 'GUI' : False, 'INPUT_LASLAZ' : 'C:\\Data\\colorized.las', 'POINTS' : 5000000, 'SIZE' : 0, 'VERBOSE' : False }

LAStools command line

C:\LAStools\bin\lasview -i "C:\Data\colorized.las" -points 5000000

LAStools console output

Traceback (most recent call last):
File "C:\Users/Proprietario/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\LAStools\lastools\core\visualization_colorization\lasview.py", line 81, in processAlgorithm
LastoolsUtils.run_lastools(commands, feedback)
File "C:\Users/Proprietario/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\LAStools\lastools\core\utils\utils.py", line 75, in run_lastools
feedback.pushConsoleInfo(output.decode("utf-8"))
^^^^^^^^^^^^^^^^^^^^^^
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8a in position 30: invalid start byte

Execution failed after 0.05 seconds

Loading resulting layers

Algorithm 'lasview (file)' finished

I want to visualyze and elaborate

[LAStools - efficient tools for LiDAR processing]

Hi Giovanni,

you are at the right track. Your input file looks good now. If it is still not running it is most likely that your whole installation is wrong.

Please check the settings of the plugin - your settings should look somehow like this:

The LAStools and the script folder should be in a path without fancy chars.

If all is set up correct you should see a log like this:

If you can not get it running please also check if you have the latest version of the plugin and compare the version above with your versions.

Cheers,

Jochen @rapidlasso