lassplit not providing output?

[Sarah Atkinson]

Hello.

I've been trying to use Lassplit on some point cloud files but when running the algorithm it appears to run fine, but does not produce any output. I've tied Batch process and single process, a combination of ticking/ unticking verbose, 64bit and open LAStools GUI and also on differing imagery (which someone else used and had no problem with). I am using QGIS LTR 3.28 Firenze. 

Any suggestions appreciated

Cheers

[Jochen Rapidlasso]

Hi Sarah,

please follow the rules on 

    https://rapidlasso.de/service/

You did not tell what command/input you are using neither what the program produced as log output.

This is a small sample just to show how it works:

Give a input file, select how to split, and where to put the output:

Then after "run" the program produce some beautiful log output.

There is a "copy to clipboard" button, which make it very easy to copy the output to the support people:

QGIS version: 3.34.3-Prizren
QGIS code revision: 47373234ac
Qt version: 5.15.3
Python version: 3.9.18
GDAL version: 3.8.3
GEOS version: 3.12.1-CAPI-1.18.1
PROJ version: Rel. 9.3.1, December 1st, 2023
PDAL version: 2.6.0 (git-version: 3fced5)
Algorithm started at: 2024-03-09T08:24:36
Algorithm 'lassplit' starting…
Input parameters:
{ 'ADDITIONAL_OPTIONS' : '', 'CPU64' : False, 'DIGITS' : 2, 'GUI' : False, 'INPUT_LASLAZ' : 'C:\\lastools\\data\\lake.laz', 'INTERVAL' : 50, 'OPERATION' : 4, 'OUTPUT_LASLAZ' : 'c:\\temp\\temp.laz', 'VERBOSE' : True }

LAStools command line
C:\lastools\bin\lassplit -i "C:\lastools\data\lake.laz" -digits 2 -by_x_interval 50.0 -v -o "c:\temp\temp.laz"
LAStools console output
reading 102622 points of type 1 from 'C:\lastools\data\lake.laz'.
WARNING: file name number 9540 too big to store in 'c:\temp\temp_40.xxx'. use more digits.
creating output file 'c:\temp\temp_40.laz'
WARNING: file name number 9541 too big to store in 'c:\temp\temp_41.laz'. use more digits.
creating output file 'c:\temp\temp_41.laz'
WARNING: file name number 9539 too big to store in 'c:\temp\temp_39.laz'. use more digits.
creating output file 'c:\temp\temp_39.laz'
WARNING: file name number 9542 too big to store in 'c:\temp\temp_42.laz'. use more digits.
creating output file 'c:\temp\temp_42.laz'
WARNING: file name number 9543 too big to store in 'c:\temp\temp_43.laz'. use more digits.
creating output file 'c:\temp\temp_43.laz'
WARNING: file name number 9544 too big to store in 'c:\temp\temp_44.laz'. use more digits.
creating output file 'c:\temp\temp_44.laz'
split 'C:\lastools\data\lake.laz' into 6 files. took 0.06 sec.

Execution completed in 0.24 seconds
Results:
{'commands': ['C:\\lastools\\bin\\lassplit',
'-i',
'"C:\\lastools\\data\\lake.laz"',
'-digits',
'2',
'-by_x_interval',
'50.0',
'-v',
'-o',
'"c:\\temp\\temp.laz"']}

Loading resulting layers
Algorithm 'lassplit' finished

----------------

In this sample the files

temp_44.laz
temp_43.laz
temp_42.laz
temp_41.laz
temp_40.laz
temp_39.laz

were produced.

Everything works well.

Please check again and provide much more information if it does not work on your side.

Feel free to report what went wrong on your first try, maybe we are able to improve the QGIS plugin to make it more easy to use.

Cheers,

Jochen @rapidlasso