LAS File "out of memory" when triangulating
miksmith
Global Mapper UserTrusted User
I get an "out of memory" error when triangulating a 90Mb LAS file for use in 3D view, both when I open the file and choose triangulate or when I try 3D grdding from the control panel. The file loads fine in "point cloud mode" and I notice the dialog says it might fail if it tries to triangulate!
Ive got 1.25Gb of RAM so not overly stingy!! What are the limits on file sizes??
cheers
mike
Ive got 1.25Gb of RAM so not overly stingy!! What are the limits on file sizes??
cheers
mike
Comments
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Mike,
What version of Global Mapper are you using? Prior to Global Mapper v9.01 a file that large would likely result in an out-of-memory error, but with v9.01 much larger files (i.e. over 10 million points) can now be successfully triangulated and gridded.
Thanks,
Mike
Global Mapper Support
support@globalmapper.com -
Sorry, I should have said! v9.01 under XP. 90Mb LAS files arent big in terms of LIDAR data, but there are obviously ALOT of points!
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Hi Mike
Ive double checked my LAS file and it has a tad under 5M points in it. The exact error message is
Error loading d:\eastleigh.las
Not enough memory to allocate elevation grid.
GenericASCIIOverlay.cpp - 2428
thanks
mike -
Mike,
The problem is that your system is failing to allocate a large memory block to hold the generated elevation grid in memory. I have modified Global Mapper to save large generated elevation grids to a temporary disk file, which should fix your problem. I have placed a new build at http://www.globalmapper.com/global_mapper9.zip with the change for you to try. Simply download that file and extract the contents into your existing v9.xx installation folder to give it a try.
Let me know if I can be of further assistance.
Thanks,
Mike
Global Mapper Support
support@globalmapper.com -
Hi Mike
Many thanks for the legendary fast support!! This fix works fine and still remains pretty fast during the triangulation. No problems thus far
cheers
mike
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