Re: area averaging across 0E.

Hi Cathy,
You probably want the lonPivot function that lets you choose the longitude to pivot about. The example it gives (pivoting about 330) would work for the use case of -10 to 200.
 -dave

On Nov 9, 2012, at 11:58 AM, Cathy Smith (NOAA Affiliate) wrote:

> All
>
> I have gridded data that generally goes from 0 to 360 in longitude
> (sometimes -180 to 180 though I can easily switch that to 0 to 360). I
> would like to produce area averages from this data.
> Sometimes, the area to be averaged will cross 0E (350E to 10E, say). I
> looked and could not find any routine that does this. I thought
> wgt_areaave_Wrap did but it doesn't seem to (and it doesn't give an error).
> How can I easily do this? A few ways that occurred to me are to append
> arrays in longitude (0 to 720) which will create very big arrays as I'm
> looking at time series. Another alternative is to split up
> the calculation at 0 but I would need to combine the results back
> together correctly. I could flip the longitude depending on the desired
> area but that wouldn't handle -10 to 200, for example though it would
> handle -10 to 120.
>
> I looked through examples and didn't see one though I would think it
> would be a common task. So, maybe I'm just misunderstanding something.
>
> Cathy Smith
>
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Received on Fri Nov 9 12:43:26 2012