List of all recognized LAS classes

[wonder-sk]

I am currently aware of these classes recognized by specs:

• classes 0-22 are defined in the LAS 1.4 R15
• classes 40-45 are defined in the topo-bathy lidar domain profile

Are there any other specs to be aware of? Is there any common place that would list all currently assigned LAS classes?

(As a developer, I'd like to provide an up-to-date list of labels for known class values in QGIS.)

[kjwaters]

Martin, We have tables of about 20 or so different class schemas we've seen over the years. Usually they are along the lines of the base LAS spec table at the time and a few more classes on top of that, conflicting with someone else's additional classes. Nothing really official, they are just capturing what we've seen. Just another reason I wish people would fill out the classification VLR. Kirk Waters, PhD NOAA Office for Coastal Management Applied Sciences Program ‪Phone: 843-284-6962‬ (New as of 2022) coast.noaa.gov/digitalcoast

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On Fri, Aug 12, 2022 at 10:13 AM Martin Dobias ***@***.***> wrote: I am currently aware of these classes recognized by specs: - classes 0-22 are defined in the LAS 1.4 R15 <https://www.asprs.org/wp-content/uploads/2019/07/LAS_1_4_r15.pdf> - classes 40-45 are defined in the topo-bathy lidar domain profile <https://www.asprs.org/wp-content/uploads/2010/12/LAS_Domain_Profile_Description_Topo-Bathy_Lidar.pdf> Are there any other specs to be aware of? Is there any common place that would list all currently assigned LAS classes? (As a developer, I'd like to provide an up-to-date list of labels for known class values in QGIS.) — Reply to this email directly, view it on GitHub <#124>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AA5B33IXRCUMAOQ6EG2PEJLVYZLLLANCNFSM56LZ3JRA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[esilvia]

Good question! The topobathy community intend to add a few more in the second release of the LDP in #117. They also have a few classes in there like 64 and 65 that we intend to map over to 46 and 47.

If you wish to develop something like this, the official ASPRS tables are the ASPRS LAS classes as a good start, and then you can extend with dropdown options for the LDPs. Currently we have Topobathy LDP v1 and the draft v2.0. There aren't any other LDPs currently, but I constantly advocate for more. The utility sector seems ripe for one.

You might also take a look at #82 to see what @kjwaters means by supporting the classification VLR.