topic Re: Issues publishing a scene from large LAS file in ArcGIS Online Questions

Issues publishing a scene from large LAS file

ToddEason — Tue, 02 Jun 2020 15:38:28 GMT

I have published a scene layer from an LAS file that contains approx 100 million points. I have previously done this with smaller datasets but with this one I am having some major rendering issues of the points. Parts of the scene render correctly and never have an issue, other areas are bad 100% of the time, and some areas are just completely random. I have tried multiple settings with the display limits and density and seem to have the same result. I have no issues viewing the LAS in ArcGIS Pro. Any advice would be appreciated. I have attached some images showing the issues.

Thanks,

Re: Issues publishing a scene from large LAS file

RussRoberts — Wed, 03 Jun 2020 12:38:38 GMT

Can you share the layer and I can take a look?

Thanks!

Re: Issues publishing a scene from large LAS file

ToddEason — Wed, 03 Jun 2020 12:53:05 GMT

Russell Roberts‌ - I'm trying to find you on AGOL and it doesn't seem to. Any suggestions on just adding you to a group so you can see it? I don't have the option to just make it public.

Re: Issues publishing a scene from large LAS file

RussRoberts — Wed, 03 Jun 2020 13:32:47 GMT

You can invite russell_jsapi into a group.

Re: Issues publishing a scene from large LAS file

RussRoberts — Wed, 03 Jun 2020 15:04:16 GMT

Also what version of Pro did you use to create this SLPK?

Thanks!

Russ

Re: Issues publishing a scene from large LAS file

ToddEason — Wed, 03 Jun 2020 15:21:21 GMT

2.5.1

Re: Issues publishing a scene from large LAS file

RussRoberts — Thu, 04 Jun 2020 13:50:08 GMT

If possible can you share the las file used to create this dataset to the group as a zipped file?

Thanks!

Re: Issues publishing a scene from large LAS file

ToddEason — Thu, 04 Jun 2020 15:12:58 GMT

I have added the dataset as a zip and shared.

Re: Issues publishing a scene from large LAS file

ToddEason — Mon, 08 Jun 2020 14:29:47 GMT

Russell Roberts‌ - Any updates?

Thanks!

Todd

Re: Issues publishing a scene from large LAS file

RussRoberts — Mon, 08 Jun 2020 15:34:55 GMT

Not yet, looking into the LAS data and the SLPK cooker right now if there is an issue there.

Thanks!

Russ

Re: Issues publishing a scene from large LAS file

WilliamMorrish — Mon, 08 Jun 2020 23:30:41 GMT

The file is a single 3.5GB LAS file which even Quick terrain modeler has trouble opening.

Loading and processing this single file with the "Create point cloud scene layer" geoprocessing tool is not optimal.

It would be better to create a number of smaller LAS tiles in the region of 50 to 150 MB each and than creating the SLPK from the LAS dataset. This will allow for the efficient processing and indexing of both the dense point cloud data around the building and the sparse point cloud data at the periphery of the scan.

Steps are:

Create LAS dataset from single large LAS dataset.

Use the Tile LAS to create optimum set of sized tiles for building and parking area.

Use create point cloud scene layer package with the following settings.

Point Size to 0.01, XY Max error 0.001 and Z Max error to 0.001 cooking with Scene layer version 2.X

You should than have the optimum SLPK that performs as you require in Pro and AGOL

All the best,

Seán Morrish | Data Wrangler, 3D Scene Layers