Thanks for letting me know. I'll ask my colleague if he is able to edit the maps for me.

I store them in the materials to get the tile images in the correct order. I'll make sure to do it a different way. If I manage it I'll post the code on here.

Thanks for your help

No, Online Maps does not have built-in features to load GeoTiff or DEM.
You must load the data and pass it to the map.

Your way of loading elevation data is extremely expensive.
It just kills the performance of the application.
Perhaps your server can return 32x32 elevations for the required area.
This will save a lot of time on both sides (client and server).

You have an incorrect heightmap as a result.
I do not know why this happened in your case.
It needs to be tested to say definitely what is wrong.

I did try a solution but I'm sure it was wrong:

Online Maps uses 32 instances of a material for each tile. I cheated and made it so that whenever I downloaded a geotiff tile, I would set the geotiff as "overlayBackTexture" of the tile. Then I would make a composite image of the 32 tile images stored in the overlayBackTexture and convert that into a short[32,32] array and set elevation from that. The resolution of each tile image was 256x256.

(see attached files)

I  would obviously get a very bad looking  heightmap but I wanted to know if I might have been going in the right direction.

I also have a similar question about handling GeoTiff Elevation data. I have seen some solutions where people convert GeoTiff to DEM data. Does Online Maps have an inbuilt way handling GeoTiff and/or DEM data?

I'm trying to find some public data I can send to you as an example. My colleague set me up with a local geoserver install to work with on my laptop. I'm trying to find a public link I can send to you. If it helps, the link I use reads like this:

[localhostURL]/wms?service=WMS&version=1.1.0&request=GetMap&layers=jump:elevation&styles=&bbox=-180.0,-90.0,180.0,90.0&width=768&height=384&srs=EPSG:4326&format=application/openlayers

(I edited the link above as I'm only allowed to post one link for some reason)

...which gives me the collection of GeoTiff tiles as shown in the attached image

I can download the GeoTiffs and convert them pngs and/or byte arrays but that is as far as I get. I have seen that people convert geotiff to Digital Elevation Maps (DEM) before handling them in Unity. Does Online Maps have a toolset for handling GeoTiff/DEM data?

Sorry I could not give you a url to work with but as soon as I can find an online example I will send it to you. All I know is that the data we are using is DTED Level 0 (free) LandSat data.
http://vterrain.org/Elevation/dted.html

Thanks in advance

I'm attaching my script here any input would be greatly appreciated.

Unfortunately, I did not understand what url you expect to get from me.

If you mean url of topic starter, then:
1. I do not have this.
2. In any case, I would not give it to you, because this is private information of the person who applied for support.
I do not have the right to publish such information.

If you asked about something else, please explain this in detail.

Thank you,
Danielle

P.S. In my first post of this thread, I have offered you help.
Your security policy is not my business.
But it really hurts me to see that you have not been able to do it in a month.
Yes, that it is quite a difficult task.
For me it's a task for an hour, and for you, I think, for another month.
So I'm offering you help again. You know what I need for this.
Think about it.

P.S. For tile textures use:
texture.wrapMode = TextureWrapMode.Clamp;