topic Re: Spatial Analysis Extract By Mask in ArcGIS Spatial Analyst Questions

Spatial Analysis Extract By Mask

TravisCole — Fri, 11 Mar 2011 17:01:00 GMT

Using Arc 9.3 I was able to extract the area of the raster I am using with a mask I have made from a shapefile. When I do this in 10 it no longer automatically adds the layer to my map and the layer is missing an attribute table. If I go to symbology and click on unique values it asks me if I would like to create an attribute table and if I click yes it does nothing.

So basically I try and extract a polygon area from the raster and then I need that extracted area to have an attibute table so I can calculate different statistics of that extracted area.

Re: Spatial Analysis Extract By Mask

JarlathONeil-Dunne — Sat, 12 Mar 2011 14:02:37 GMT

Are both layers in the same cordinate system?

Re: Spatial Analysis Extract By Mask

TravisCole — Mon, 14 Mar 2011 15:49:00 GMT

Yes. When I created the raster layer I made it the same coordinate system.

Ok restart of the computer and closing the program it let me create the attribute table. Still a pain though. Now not only does it take twice as long to run the extraction tool, but then it doesn't add the layer to my map. After I go search for it and add it to my map then I have to change the symbology to unique values and make it create the attribute table...all of which was automatic in 9.3.