topic Re: DEM Not loading properly in Mosaic Dataset in Imagery and Remote Sensing Questions

DEM Not loading properly in Mosaic Dataset

EricS — Wed, 07 Feb 2024 16:30:50 GMT

This is a newbie question. My DEM .img image looks good. When I load it into a mosaic dataset all I get is a solid grey image. What could be causing it? Is there something wrong with the image or something wrong in my mosaic dataset configuration?

Re: DEM Not loading properly in Mosaic Dataset

JakeSkinner — Wed, 07 Feb 2024 17:00:45 GMT

Hi @EricS,

You may need to calculate statistics on the image. When adding the raster to the mosaic dataset, check the option Calculate Statistics under Raster Processing:

Re: DEM Not loading properly in Mosaic Dataset

EricS — Wed, 07 Feb 2024 17:17:50 GMT

Yes statistics have been created but it still gives me the issue

Re: DEM Not loading properly in Mosaic Dataset

DavidPike — Wed, 07 Feb 2024 20:26:02 GMT

alot can go wrong with MD display unfortunately. Definitely statistics was the first thing that came to mind. Not completely sure without seeing it. How big is it? would think the wireframe would be showing at the full extent. If it's a big data range and you've zoomed into a raster and still see a grey blob, it may be as simple as the area of elevation you're looking at having very similar values. In that case I'd adjust the symbology stretch to go by extent, and/or try a colour stretch rather than greyscale.

pixel type might be the issue, and there's the multitude of file types you can specify when adding a folder into the MD.

Re: DEM Not loading properly in Mosaic Dataset

DavidPike — Wed, 07 Feb 2024 20:27:54 GMT

Just re-read the question. Is this multiple DEM.img's or just 1?

Re: DEM Not loading properly in Mosaic Dataset

chill_gis_dude — Fri, 06 Sep 2024 18:41:06 GMT

Were you ever able to figure out a solution for this? Loading DEMs into mosaic dataset results in gray boxes no matter what settings are applied.