Thanks to all who helped me on my previous raster output questions; I now have a better handle on what I can (and can't) do.

How can I do map algebra across raster tables? I have a db of raster tables (all the same extend) with weather variables by date. I have a number of ways i want to use these data, but in the initial case I would like to, as an example, create a new raster table where the data value at each cell is the average of the previous day's values. Any thoughts?

Thanks,
Steve

--
Stephen Crawford
Center for Environmental Informatics
The Pennsylvania State University



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