topic Re: Raster Dataset in Data Management Questions

Raster Dataset

MalloryChambliss — Wed, 13 Jun 2012 23:42:28 GMT

In ArcCatalog (ArcGIS 10), I created an empty raster dataset within a file geodatabase. I then loaded two .tif files (DEM tiles that I had saved to my computer from the National Elevation Data website) into the empty raster dataset. The .tif files seem to load fine (with no error message), however, either no image shows up, or just a solid black square the size of the loaded .tif tiles shows up, in the 'Preview (geography)' window of ArcCatalog. Is this a common problem? What am I doing incorrectly? How can this be resolved? I am relatively new at working with raster datasets within a file geodatabase. Any insight would be helpful. Thanks.

Re: Raster Dataset

JeffreySwain — Thu, 14 Jun 2012 10:31:30 GMT

Can you check and see if you have the statistics generated for the new raster? If so then be sure to turn on the standard deviation stretch under properties > symbology. If you do not have statistics then you will be prompted. If you see the black square and then see the full range of options for your bit depth, most likely there are not any statistics for your raster.

Re: Raster Dataset

MalloryChambliss — Fri, 15 Jun 2012 04:40:18 GMT

Thank you. This was helpful.