topic Re: Snap raster is not honored in ArcGIS Spatial Analyst Questions

Snap raster is not honored

toddsams — Fri, 10 Jan 2014 21:39:30 GMT

I have successfully used snap raster in Environment Settings on numerous occasions to be sure my rasters are aligned properly. I have done this in the extract by mask, resample, and copy raster tools (to name a few).

However, I have one particular raster data set that will NOT snap to the raster specified in snap raster Environment Settings!

They are elevation data from the National Elevation Dataset, which I have worked with many times. I tried setting snap raster within multiple tools, none will snap.

Any suggestions?

Re: Snap raster is not honored

DanPatterson_Retired — Fri, 10 Jan 2014 22:00:41 GMT

is everything in the same projection/coordinate system?

Re: Snap raster is not honored

toddsams — Sun, 12 Jan 2014 13:23:10 GMT

Doh! I had been using the wrong version of the snap raster data set... an older version with the same file name stored in a slightly different folder location. All is working fine now.

Re: Snap raster is not honored

JeffreySwain — Thu, 16 Jan 2014 10:37:49 GMT

Also just to double tap this, when running any Geoprocessing tool, be sure to check the Help documentation to see which environment settings are being recognized by the tool. Not all tools recognize the same settings, so while you may be setting the snap raster for every tool in Spatial Analyst, not every tool will respect it. You can set every environment setting, but only a few are recognized bycertain geoprocessing tools.