[geomoose-psc] GeoMoose GeoParquet Support

[Eli Adam]

Hi Dan,

This is exciting development!  As people test it out, we'll learn more about how it is working.

>From a bookkeeping perspective, look back to the initial scope (https://lists.osgeo.org/pipermail/geomoose-psc/attachments/20260119/a519ae6e/attachment.md) and once complete, submit an invoice for processing by the PSC.

I haven't tested GeoParquet yet but a quick look (that may have missed things) suggests that "1.  Host a version of the demonstration parcel dataset in GeoParquet format on GitHub" may be met with an equivalent public google bucket.  I don't see that 2. has been completed, "2. Publish the instructions for how the conversion from the parcel shapefile was performed. This should appear as a How To in the documentation repository."  Again, I only took a glance and may have missed things.

Thanks for the exciting improvement!

Best regards, Eli

________________________________
From: geomoose-psc <geomoose-psc-bounces at lists.osgeo.org> on behalf of Dan Little via geomoose-psc <geomoose-psc at lists.osgeo.org>
Sent: Monday, April 13, 2026 10:18 AM
To: GeoMOOSE PSC <geomoose-psc at lists.osgeo.org>
Subject: [geomoose-psc] GeoMoose GeoParquet Support

Hi Folks!

I wanted to get an update on the GeoParquet in GeoMoose support out to the PSC. The original proposal had us concluding this at the end of March. 95% of the code was done then but I had an itch I wanted to scratch -- adding WebWorker support for GeoParquet layers. The WebWorker support allows Parquet files to be loaded without over-burdening the main rendering thread for the application.

The current code is available here:
- https://github.com/geomoose/gm3/pull/938

I used DuckDB to convert the GeoJSON version of the Parcels to GeoParquet, put the output in a public google bucket, and then continued to Dev. I also keep a copy locally for when working from planes. :-)

This should all work seamlessly with the current demo.

At this point, I would consider this the conclusion of the scope of work (and a little more got done as well) but would love bug reports and feedback!
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