las2dem error

[Roz Jones]

Hi all

I am trying to process some lidar results, but when i try and put the first file through las2dem, i get the following error:

LAStools command line

C:\LAStools\bin\las2dem -i "E:\Main map + data\data\Lidar point cloud\laz\ST5555_P_10631_20190117_20190117.laz" -step 1.0

LAStools console output

Please note that LAStools is not "free" (see http://lastools.org/LICENSE.txt)
contact 'martin....@rapidlasso.com' to clarify licensing terms if needed.
WARNING: unlicensed. over 1.5 million points. inserting black diagonal.
ERROR (TINclean): failed malloc for 86448400 TINtriangles.
ERROR: cannot alloc enough TIN triangles to triangulate 43224200 points.
contact martin....@rapidlasso.com for help on what to do. 

I emailed Martin, and was directed here.  how can this be fixed as I have a number of other files to do as well

Roz

[Martin Isenburg]

Hello,

this is simple. Too many input points. Use blast2dem instead of las2dem.

Regards,

Martin

--
Download LAStools at
http://lastools.org
http://rapidlasso.com
Be social with LAStools at
http://facebook.com/LAStools
http://twitter.com/LAStools
http://linkedin.com/groups/LAStools-4408378
Manage your settings at
http://groups.google.com/group/lastools/subscribe
---
You received this message because you are subscribed to the Google Groups "LAStools - efficient tools for LiDAR processing" group.
To unsubscribe from this group and stop receiving emails from it, send an email to lastools+u...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/lastools/f224817d-23f4-4fc1-8e92-0ff4b73e073bn%40googlegroups.com.

[Katie Strattman]

Dear Martin, 

I am running into the same issue as OP. I am working on my labs server which is only able to run 64 bit exe so I am not able to use the blast2dem tool. Is there possibly another work around or will we have to install 32 bit wine

Thanks so much,

Katie 

[Martin Isenburg]

Hello,

there is a 64 bit version of las2dem that can be activated with the switch '-cpu64' or by directly calling las2dem64 but there have been reports that this version results in the occasional missing pixel (it seems the floating point arithmetic behaves different) and I have not been able to find, confirm, or fix this bug so far. Hence blast2dem seems your best option at the moment.

Martin 

To view this discussion on the web visit https://groups.google.com/d/msgid/lastools/30708635-a5b9-44f0-b540-1c88cf39fc56n%40googlegroups.com.

[Katie Strattman]

Dear Martin, 

I am able to run las2dem but not blast2dem as there is no 64 bit executable for blast2dem. I have a very large lidar dataset, so based on other comments it seems that only blast2dem will be able to handle my files, rather than las2dem. Is there a way to run blast2dem with 64 bit wine or would we need another work around?

Thanks so much,

Katie

To view this discussion on the web visit https://groups.google.com/d/msgid/lastools/CABSWR-G7yKKUneFU5KAO1GZ_kzwSx6pV-mcCue7HkJvw56TT6Q%40mail.gmail.com.

[Martin Isenburg]

Hello,

Unfortunately you will need another work-around as blast2dem only exists in 32 bits and that is unlikely to change soon.

Regards,

Martin

To view this discussion on the web visit https://groups.google.com/d/msgid/lastools/CABy597XQh70L5b3%3DBTdm-Y2wmWoO-ARn0PYS%3DcM6-%2BuZGSBsWg%40mail.gmail.com.

[Roz Jones]

Thanks Martin

Another few questions:

1) how can i change a bunch of files names at once, for example from ST5550_P_10631_20190117_20190117.laz to ST5550_P_10631_20190117_20190117_dem.tif, rather than have to go through and manually enter the new filename and ending?

2) will lasground work with larger files, as i wish to change the terrain type to archaeology