I have version 9.3.1 at home. I was on campus last week and tried running the same Moran's I calculation in ArcGIS version 10 on one of the layers. It worked, but I was out of time, so didn't try the rest. I don't know what is different, but I'll try the rest of the layers while I'm back on campus next week. Thanks for your reply.
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(1) I got this error when running Moran's I: Executing: SpatialAutocorrelation Intersects\Eagle_Winter_Day_NAD83_Intersect_Crown_Bulk_Density cbd_fin false "Inverse Distance" "Euclidean Distance" None # # 0 0 0 Start Time: Thu Aug 04 08:29:03 2011 Running script SpatialAutocorrelation... ERROR 000641: Too few records for analysis. This tool requires at least 3 feature(s) to compute results. <class 'ErrorUtils.ScriptError'>: Exiting.... Failed to execute (SpatialAutocorrelation). End Time: Thu Aug 04 08:29:09 2011 (Elapsed Time: 6.00 seconds) There are 2679 records and more than three values for cdb_fin, so I don't understand the error message. (2) This tool also doesn't seem to recognize raster layers. Does anyone know of a tool that looks at spatial autocorrelation for raster layers? (3) I would think that the layers I'm using for covariates (crown cover, veg type, stand density index, etc) would be spatially autocorrelated. Is there a way that I can do my analysis to allow for that?
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