I'm using aggregate in the raster package.

It looks like it uses the coordinate pair of the northwest corner of the
original high res dataset as the new northwest corner of the aggregated
dataset. This would be right if the coordinates were taken to be grid
centered. But when I browse the data in arc, it *looks* like the Raster
package is using cell center coordinates. (But it could be arc that is
confusing grid and cell-centered.)

In case it matters, these files were netcdfs, with bands converted to
rasters, and then stacked to prep for the aggregate. I still haven't gotten
crop to work on them, erroring with "Error in intersectExtent(x,y):Invalid
extent" so maybe I have deeper coordinate system read-in problems...


Elizabeth
____________________
Elizabeth Crisfield
Research Assistant
Geography Department
Penn State University
phone 814-777-3395
eac16@psu.edu
www.elizabethcrisfield.com

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