lasgrid using bigTif

[Shaun Blackmore]

Hi all,

I’m reaching out for some help with lasgrid. I'm currently using it to generate .tif file and trying to force BigTIFF output using -force_bigTif.

When I use the -o option to output a .tif, the file is created successfully, but it doesn't seem to open correctly — likely because the tif file is too big.

Here’s a snippet of the code I’m using:

lasgrid64 -i %LIDAR% -merged -density -o output.tif -odir %DIR% -force_bigTif -cores %CORES%

Any ideas on what I might be missing?

Thanks so much for your help!

[LAStools - efficient tools for LiDAR processing]

Hi Shaun,

what means too big? 

How big is the file? 

What file system do you use? 

Do your file system support the file size you try to generate?

What means "doesn't seem to open correctly"?

Which program do you use to open the TIFF file?

The command you are using looks correct, except of "-cores", which will be ignores on "-merged", so probably it is a problem in your environment.

Cheers,

Jochen @rapidlasso 

[Shaun Blackmore]

what means too big? 

Bigger than the tif file size limit (4GB). Initially, my output was the simple tiff file, wasn't the BigTiff.

How big is the file? 

5.7GB

What file system do you use? 

Windows

Do your file system support the file size you try to generate?

I am not sure

What means "doesn't seem to open correctly"?

When I tried to open the file in ArcPro or in QGIS, It couldn't read the file and gives the error message. 

Which program do you use to open the TIFF file?

ArcPro, QGIS, GDAL

The command you are using looks correct, except of "-cores", which will be ignores on "-merged", so probably it is a problem in your environment.

When running the command line below it gives the error message:

V:\Elevation_Project\LASTools>lasgrid64 -i Y:\elevation\z_temp\maranoa\las\*.las -merged -density -otif -force_bigTif -o point_density_all.tif -odir Y:\elevation\z_temp\maranoa\output
ERROR: cannot understand argument '-force_bigTif'

[LAStools - efficient tools for LiDAR processing]

Hi Shaun,

if this command does output this error message it is probably an older version.

Please try to run the command with the "-v" argument (verbose output).

It should report then the version in the first line, e.g.

   LAStools lasgrid (by in...@rapidlasso.de) version 250415

What is the version you run?

Cheers,

Jochen @rapidlasso