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Can you send an example of the code that's failing? That's the only reliable way for me to tell what's going wrong. Ryan > Thanks for the clarification, I should have known that! Anyway, I finally > succeeded to create the grid. However, I still have a problem retrieving > the correct indices when I use the findXYIndexByLatLon function. Strangely > I get an index of 1500 for x - which should actually be 0 as I'm looking up > the first lat value - and a -1 index for y (again looking up the first lon > value here). Ticket Details =================== Ticket ID: IAZ-886449 Department: Support netCDF Java Priority: Normal Status: Closed