Visibility on large raster

Question

Hello all

We are using Visibility gp tool. Our DSM is 1 meter resolution and we try to calculate visibility for about 25 KM.

We do set the extent.

After about 10 minutes Pro crash. It gets to about 92% of the process.

The Pro.exe takes about 11Gb of memory but the machine have a lot of free memory.

I found this: https://support.esri.com/en-us/bug/when-working-with-large-raster-files-in-arcgis-pro-the-bug-000131320

Does anybody is doing such large Visibility calculations?

Thanks

mody_buchbinder · Answer

There is a lot of data and two servers so the DSM's are on network drive.

I will test it on a local drive two (The servers are virtual). It is not going to be easy to manage it if it helps.

DavidPike · Answer

Is the location of the data a possible issue?  i.e. Network Drive registered in the data store that has a slow I/O

mody_buchbinder · Answer

Hi all

My DSM is in UTM and tiff format.

The observer point is in UTM too.

Since this should run as a gp service on a server with no graphic card I do not think Geodesic Viewshed will do better.

I am thinking about splitting to big tiles, do separate visibility on each tile and then merge the results but did not have the time to test it yet.

Thanks