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I have a soil survey polygon map with each polygon representing a soil type.

If I examine the attribute table of the layer, I can see what each polygon represents.

If I select a row in the attribute table it highlights the proper polygon on the map.

If I convert this layer to a raster, ArcMap colors each polygon according to it's correct soil type.

However, when I use Identify on one of these polygons it reports NoData and shows a blank table.

So it seems the attribute are not being reflected on the map itself.

Any idea of the cause and/or how to fix?

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    You converted the vector to raster -- In what format? At what bit depth? How did you map polygon attributes to raster values? It would probably help if you include a graphic that shows the raster on top of the polygon layer and denotes where the Identity tool was clicked. BTW: ArcGIS 9.x was Retired in Dec 2013, and even 10.0 will be Retired in a few weeks. If you're going to be starting GIS, using something released this decade is advised. – Vince Dec 1 '15 at 2:28
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    I'd also note that the graphic shows NoData for the raster, not the polygon layer. – Vince Dec 1 '15 at 2:31
  • As a new user please take the 2-minute Tour to learn more about our focussed Q&A format. What you are observing here is the software working correctly. The misunderstanding seems to relate to using Identify to identify from a raster and expecting to see polygon attributes returned. – PolyGeo Dec 1 '15 at 3:18
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The identify tool yields a result for the layer(s) selected in the drop down list on the right of "identify from:" . In your case, the selected layer is currently "orange_soil_raster" and not "durh_soil_utm". Change the identify target to "all visible layers" or "durh_soil_utm" and it will work. Note that in the first case you will need to expand the results for your layer of interest.

  • Ah. I'm used to it just being the top most layer. Good eye. Thanks!! – theforestecologist Dec 1 '15 at 15:05

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