Comparison between two files with different resolution

Michael Fiorino Michael.Fiorino at NOAA.GOV
Thu May 14 14:08:40 EDT 2009


and my regrid2 function has been corrected and is available in opengrads
1.10 and 2.0 as 're2'

ciao mike

Arlindo da Silva wrote:
> On Thu, May 14, 2009 at 12:39 AM, Sachin Ghude
> <sachinghude at tropmet.res.in <mailto:sachinghude at tropmet.res.in>> wrote:
>
>     Dear all,
>
>     I am trying to calculate mean between product 1 (2.8X2.8 degree of
>     resolution), product 2 (2.8X2.8 degree of resolution) and  product
>     3 (1X1 degree resolution).  I do not know how to increase
>     the resolution of  product 3 to 2.8X2.8 degree.
>
> You will need to use a regridding function. Your options depend on the
> version of grads you are working with (always give us the version of
> grads you are using). In older versions (v1.9b4 ad earlier) the
> classic regrid2() UDF used to be the norm. Version 2.0 comes with
> lterp() function built in:
>
>          http://grads.iges.org/grads/gadoc/gadocindex.html
>
> while the OpenGrADS builds (available
> from https://sourceforge.net/project/showfiles.php?group_id=161773)
> comes with the re() function:
>
>          http://opengrads.org/doc/udxt/re/
>
> re() is a C implementation of the classic regrid2() UDF and is much
> faster.
>
>   Arlindo
>
> --
> Arlindo da Silva
> dasilva at alum.mit.edu <mailto:dasilva at alum.mit.edu>



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