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The LAS room - a friendly place to discuss the LAS and LAZ formats
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The LAS room - a friendly place to discuss the LAS and LAZ formats
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community input on the LAS format and its compressed twin - the LAS format
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Ke Salah
, …
adam steer
4
6/3/20
Reading Laz Files
Hi Ke Salah That might be a question for a .net or C# forum - I hope someone here understands C# and
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Reading Laz Files
Hi Ke Salah That might be a question for a .net or C# forum - I hope someone here understands C# and
6/3/20
Albion Shabani
,
Martin Isenburg
2
2/15/20
Knowing if a LAS/LAZ RGB (color) is stored as an 8 bit or 16 bit value ?
Hello, I've added new transforms to las2las that are called '-scale_RGB_to_8bit' and
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Knowing if a LAS/LAZ RGB (color) is stored as an 8 bit or 16 bit value ?
Hello, I've added new transforms to las2las that are called '-scale_RGB_to_8bit' and
2/15/20
Pierre Abbat
7/15/19
Point return numbers are all 0
I'm writing a program to process point clouds. Initially it read only PLY files, then I added
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Point return numbers are all 0
I'm writing a program to process point clouds. Initially it read only PLY files, then I added
7/15/19
Evon Silvia
7/10/19
LAS 1.4 R15 published!
The public comment period for Revision 15 of the ASPRS LAS 1.4 specification has concluded. The
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LAS 1.4 R15 published!
The public comment period for Revision 15 of the ASPRS LAS 1.4 specification has concluded. The
7/10/19
Evon Silvia
6/17/19
LAS 1.4 Revision 15 released for public comment
The ASPRS LAS Working Group, a part of the ASPRS Lidar Division, has requested public comment on the
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LAS 1.4 Revision 15 released for public comment
The ASPRS LAS Working Group, a part of the ASPRS Lidar Division, has requested public comment on the
6/17/19
Ahmed Kotb
4/11/19
LASzip Technical Documentation
Hello , I am looking for any technical documentations that describes LASzip classes and functions and
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LASzip Technical Documentation
Hello , I am looking for any technical documentations that describes LASzip classes and functions and
4/11/19
Martin Isenburg
3/28/19
ASPRS LAS Working Group releases revision 14 of LAS 1.4 specification
Hello, it's been many months in the works and numerous discussions and consensus processes had to
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ASPRS LAS Working Group releases revision 14 of LAS 1.4 specification
Hello, it's been many months in the works and numerous discussions and consensus processes had to
3/28/19
Evon Silvia
2/19/19
Last call for comment on LAS 1.4 R14! (due 2/20)
The LAS 1.4 R14 comment period officially concluded last Wednesday (2/13), but I'm extending that
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Last call for comment on LAS 1.4 R14! (due 2/20)
The LAS 1.4 R14 comment period officially concluded last Wednesday (2/13), but I'm extending that
2/19/19
Rose Phillips
,
Martin Isenburg
2
2/11/19
LASInfo + LASValidate - which LAS File and Point Formats do these commands cover?
Hello, the report produced by lasinfo mainly summarizes the contents of a LAS or LAZ file (and
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LASInfo + LASValidate - which LAS File and Point Formats do these commands cover?
Hello, the report produced by lasinfo mainly summarizes the contents of a LAS or LAZ file (and
2/11/19
Martin Isenburg
, …
Evon Silvia
4
1/26/19
lasvalidate and points flagged as synthetic
Hello, I would side with Lewis on that one. The default behavior should exclude *certain* checks for
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lasvalidate and points flagged as synthetic
Hello, I would side with Lewis on that one. The default behavior should exclude *certain* checks for
1/26/19
Evon Silvia
, …
adam steer
6
11/13/18
ASPRS LAS Collaboration Workshop - Oct 30
Hi folks, If you missed the workshop, the recording has been posted here: https://youtu.be/
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ASPRS LAS Collaboration Workshop - Oct 30
Hi folks, If you missed the workshop, the recording has been posted here: https://youtu.be/
11/13/18
Martin Isenburg
10/21/18
can your point cloud software load the attached LAZ file?
Hello, I used the opportunity of having so many vendors showcase their latest software during the 3
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can your point cloud software load the attached LAZ file?
Hello, I used the opportunity of having so many vendors showcase their latest software during the 3
10/21/18
Martin Isenburg
10/1/18
new LASliberator for LAS 1.4 point types 6 to 10
Hello, a new version of the LASliberator was released that also sets free the new LiDAR point types 6
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new LASliberator for LAS 1.4 point types 6 to 10
Hello, a new version of the LASliberator was released that also sets free the new LiDAR point types 6
10/1/18
Martin Isenburg
2
9/15/18
Wrong scale for additional attribute "Pulse Width" in recent RIEGL exports?
Hello, the mystery was solved. The RIEGL exports are okay. TerraScan X64 Version 18.018 is the
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Wrong scale for additional attribute "Pulse Width" in recent RIEGL exports?
Hello, the mystery was solved. The RIEGL exports are okay. TerraScan X64 Version 18.018 is the
9/15/18
Martin Isenburg
7/2/18
storing nanometers? set suitable scale factors in your LAS/LAZ exports.
Hello, the folks from 3DReshaper have (recently?) added support for exporting point clouds to the LAS
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storing nanometers? set suitable scale factors in your LAS/LAZ exports.
Hello, the folks from 3DReshaper have (recently?) added support for exporting point clouds to the LAS
7/2/18
Martin Isenburg
3/22/18
latest version of the (inofficial) LASvalidator includes support for compressed LAS 1.4
Hello, in the latest LAStools release (180322) from today you will find an updated version of the
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latest version of the (inofficial) LASvalidator includes support for compressed LAS 1.4
Hello, in the latest LAStools release (180322) from today you will find an updated version of the
3/22/18
Martin Isenburg
, …
Evon Silvia
13
2/23/18
proposed clarification for FWF part of LAS 1.4 specification
Hello all, I've created an issue on the new ASPRSorg LAS GitHub page to house further discussion
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proposed clarification for FWF part of LAS 1.4 specification
Hello all, I've created an issue on the new ASPRSorg LAS GitHub page to house further discussion
2/23/18
Martin Isenburg
,
Evon Silvia
2
2/23/18
Re: [LAStools] Waveforms in LAS-1.4+WDP data
Yes, please do provide feedback on that article, as it was designed to help folks understand the LAS
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Re: [LAStools] Waveforms in LAS-1.4+WDP data
Yes, please do provide feedback on that article, as it was designed to help folks understand the LAS
2/23/18
Loren Dawe
, …
Wes Toews
13
11/9/17
Minimum WKT string for LAS 1.4 files
I have just received a reply from Even Rouault (GDAL commiter and PSC chair), who has clarified a few
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Minimum WKT string for LAS 1.4 files
I have just received a reply from Even Rouault (GDAL commiter and PSC chair), who has clarified a few
11/9/17
d weasson
,
Martin Isenburg
2
10/19/17
Problem interpreting GPS Time
Hello, elaborate answers were posted in the LAStools user forum: https://groups.google.com/d/topic/
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Problem interpreting GPS Time
Hello, elaborate answers were posted in the LAStools user forum: https://groups.google.com/d/topic/
10/19/17
Martin Isenburg
, …
Lewis Graham
9
10/19/17
how to use project GUID of LAS header?
Yes, this is correct. Sent from my iPad On Oct 11, 2017, at 19:55, Evon Silvia <esilvia@
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how to use project GUID of LAS header?
Yes, this is correct. Sent from my iPad On Oct 11, 2017, at 19:55, Evon Silvia <esilvia@
10/19/17
Martin Isenburg
2
10/6/17
wrong (?!?) GPS time stamps in LAS files of Scottish Open LiDAR
Hello, The only answer received so far came in form of a tweet suggesting that per scan line rather
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wrong (?!?) GPS time stamps in LAS files of Scottish Open LiDAR
Hello, The only answer received so far came in form of a tweet suggesting that per scan line rather
10/6/17
Martin Isenburg
10/3/17
Scotland’s LiDAR goes Open Data (too)
Hello, Are you wearing a kilt for festivities? Are you a Scottish citizen? Do you do process LiDAR or
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Scotland’s LiDAR goes Open Data (too)
Hello, Are you wearing a kilt for festivities? Are you a Scottish citizen? Do you do process LiDAR or
10/3/17
Martin Isenburg
9/25/17
LAST CALL: Please vote for LAStools at INTERGEO Awards before Sep 28
Hello, it's the last time I'll bother you with this. This week the online voting closes and
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LAST CALL: Please vote for LAStools at INTERGEO Awards before Sep 28
Hello, it's the last time I'll bother you with this. This week the online voting closes and
9/25/17
Martin Isenburg
2
9/14/17
Natural Resources Canada publishes "LiDAR Data Acquisition Guideline" for airborne LiDAR
Hello, My first comment is that I am very happy to see this requirement: Open Access: Only open LAS
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Natural Resources Canada publishes "LiDAR Data Acquisition Guideline" for airborne LiDAR
Hello, My first comment is that I am very happy to see this requirement: Open Access: Only open LAS
9/14/17
Suresh Babu Jakka
, …
Martin Isenburg
5
9/11/17
Changing point values in place
Hello, I guess you mean per "compressed unit" and that is called a "chunk" in
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Changing point values in place
Hello, I guess you mean per "compressed unit" and that is called a "chunk" in
9/11/17
Martin Isenburg
2
8/30/17
without scanner channel lasoptimize will *unoptimize* multi-beam LAS/LAZ files
Hello, thanks, Benjamin, for sharing these timing results. Note that indexed LAS will always win over
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without scanner channel lasoptimize will *unoptimize* multi-beam LAS/LAZ files
Hello, thanks, Benjamin, for sharing these timing results. Note that indexed LAS will always win over
8/30/17
Martin Isenburg
2
8/29/17
Re: laszip support for "native" LAS 1.4?
Hello, You are using a version that was released before 170828 and that uses the compatibility mode
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Re: laszip support for "native" LAS 1.4?
Hello, You are using a version that was released before 170828 and that uses the compatibility mode
8/29/17
Martin Isenburg
,
Terje Mathisen
4
8/29/17
clarification on the GPS time stored in LAS files and the gps_time range reported by lasinfo
Martin Isenburg wrote: > Terje, I would not say that lasinfo has a bug. It simply reports the >
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clarification on the GPS time stored in LAS files and the gps_time range reported by lasinfo
Martin Isenburg wrote: > Terje, I would not say that lasinfo has a bug. It simply reports the >
8/29/17
Martin Isenburg
8/27/17
clarification "number of point records" versus "extended number of point records"
Hello, I received the question on why the number of point records that lasinfo reported is 0 when the
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clarification "number of point records" versus "extended number of point records"
Hello, I received the question on why the number of point records that lasinfo reported is 0 when the
8/27/17