Error writing output file from las2dem tool running in QGIS -- PLEASE HELP

[Ken Jacob]

Hello Everyone,

When I try to run the las2dem tool in QGIS, trying to create a raster file with just the ground points, I am getting an error message that reads:

My environment is QGIS running LasTools on 2021 MacBook Pro running Sequoia 15.6

"ERROR: cannot open file 'temp.32.00060.tmp' for write in SRbufferRows "

It appears that this error occurs at the very end of processing.

Log is attached.

Any help here would be greatly appreciated!

[Jochen Rapidlasso]

Hi Ken,

looking at the log output there are some warnings and errors:

(a) No license file found. Run in demo mode. No license file found. Run in demo mode.No license file found. Run in demo mode.
--> you should consider to buy a license or your license file is not at the required place.

(b) Your input file is maybe not recognized 

ERROR: unknown file format. file name '/Users/KenJacobMacbook/QGIS/LiDAR/lyons cutler/first returns'

--> please avoid spaces in the file path, ensure the file is really there

(c) Your input file is maybe too big

you try to process 74 million points.

las2dem64 is optimized for point cloud sizes up to 20 million points.

--> please use lastile64 before to tile your file into smaller tiles and use this files to create a DEM.

(d) The temp space can not be written

ERROR: cannot open file 'temp.32.00060.tmp'

Probably this error will disappear if (a)-(c) is solved. If not you can try to use "-temp_files /temp" as additional command argument to write the temp files to a non standard temp file location on your local drive. Please use a very simple location which sure exists. Optional you can probably configure wine to use another default temp directory which will be used.

Cheers,

Jochen @rapidlasso