Maximum TIFF File Size Exceeded

[Spencer Floyd]

Hello everyone,

In attempting to run LASOverlap on 53 raw strip .laz files totaling 588GB using the following line:

'-i', las_files,'-cpu64', '-color_bands', '0.16', '0xFFFF00', '0.3', '0xFFA500', '0.5', '0xFF0000', '-step', '1', '-last_only', '-fail', '-faf','-o', 'Overlap.tif', '-odir', overlap_accuracy_folder

I came across the following errors:

Compression algorithm does not support random access:

and,

TIFFAppendToStrip: Maximum TIFF file size exceeded.

This is no doubt related to the maximum tiff size of 4GB as the output tiff files were stuck at 4GB.

It looks like the BigTiff format is a solution for larger tiffs, but I'm not sure if LASTools supports this format.

Any helpful comments would be appreciated.

Thanks,

Spencer

[Spencer Floyd]

I think the solution will be to bump up the resolution to 5m or so to reduce the file size. Is there any reason I would want to avoid that for lasoverlap grids? Obviously you loose some detail, but for my purposes we're looking for large offsets between flightlines.

Spencer

[samz...@gmail.com]

Hi Spencer,

You want to tile your dataset first.

1) index

2) Tile

3) overlap check

Sam