I have an NDVI layer masked to a Corn layer. I have laid on top of it a 8x8m grid; from that grid I have taken just the grid cells that fall completely within the Corn NDVI raster. It looks like this:

enter image description here

Ultimately, I want the mean NDVI value for each cell as a table in the grid layer. I believe the operation I want to use is Zonal Statistics. My problem there is when I go to perform that operation, I have the Environments set to Default Output Extent, yet I get an error for Invalid Output Extent.

When change the Environment settings from Default to Extent of the grid layer, it gives me an empty raster.

I have tried this as Zonal Stats as Table, and both parameters give me the same results as mentioned above.

Currently I'm converting the whole raster to point values to try and summarize those, but even if that works, it's far more tedious than I would like.

  • What software and version are you using? It might help to clarify the question tags. – juturna Jan 27 '15 at 17:05
  • Hey Johnsey - Do the fishnet layer and the Raster layer carry the same spatial reference (projected to the same coordinate system)? The layers may align in ArcMap Data View but this could be a representation made by an on-the-fly projection, and not actual agreement of coordinate systems as applied to the datasets themselves. – Jim Jan 27 '15 at 17:49

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