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  • 1.  LWG meeting next week! (Nov 20 2025)

    Posted 11 days ago

    The November 2025 LWG meeting is scheduled for next Thursday 11/20 at 11:00am PST / 2:00pm EST. Zoom info is on the event page and repeated below at the end of this post. 

    The group will review public engagement with OGC, USGS, ASPRS, and other entities regarding the publication of LAS 1.5 while revising the HTML hosting of the LAS specification. We will also provide an update from the OGC Member Meeting in October.

    Hope to see you there!

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    Topic: LAS Working Group Monthly Meeting
    Time: November 20, 2025 11:00 AM Pacific Time (US and Canada)
            Every month on the Third Thu, until Feb 28, 2025
    Join Zoom Meeting
    https://us02web.zoom.us/j/86969899943?pwd=b1A5YnduNXNNK29SaldZb1RJNnVPUT09

    Meeting ID: 869 6989 9943
    Passcode: 921136

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    One tap mobile
    +12532158782,,86969899943# US (Tacoma)
    +13462487799,,86969899943# US (Houston)

    Find your local number: https://us02web.zoom.us/u/keox425pbT



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    Evon Silvia
    Solutions Architect
    NV5 Geospatial
    Corvallis OR
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  • 2.  RE: LWG meeting next week! (Nov 20 2025)

    Posted 4 days ago

    Thanks to Darrick, Matt, Howard, Nick, and Barry for attending this month's meeting. The recording link is now available. Topics covered:

    1. Evon working with ASPRS on getting a new permanent hosting location for the LAS spec PDFs.
    2. Evon to follow up with HQ on getting the lasformat.org site to forward to the HTML version hosted on ReadTheDocs. Example: https://hobu.asprslas.org/en/latest/
    3. Howard to update his HTML-LAS sample with a second, past, version of the LAS specification for comparison.
    4. OGC is on board with updating their version of the LAS specification: https://www.ogc.org/standards/las/
    5. The WKT guidance wiki still needs to be updated with key versions of PROJ that support features important to LAS 1.5, especially the EPOCH key (PROJ 9.2?). https://github.com/ASPRSorg/LAS/wiki/WKT-Definition-Guidance
    6. Rapidlasso has published the initial version of the LAZ 1.4 specification: 
    7. There is a new version of GDAL out that adds/improves support for piped data workflows: https://github.com/OSGeo/gdal/blob/v3.12.0/NEWS.md
    8. Howard called out that European CRS definitions are in a state of major flux as they add their own time-dependent CRS definitions.

    Finally, I have one question for the community... I would like the LWG to publish a Standard VLR that documents the link between points in GPS Week Time and their corresponding GPS Week so that all three timestamp formats can be converted to real HMS times, forever. This came up as an issue during discussions at the OGC Member Meeting in Boulder, and imho is the only missing piece for making LAS 1.5 truly future-proof.

    Has anyone here produced a VLR that explicitly associates Point Source IDs (flightline numbers) with GPS Weeks? Are you willing to share it with the community as a model implementation?



    ------------------------------
    Evon Silvia
    Solutions Architect
    NV5 Geospatial
    Corvallis OR
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    Original Message


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