[gradsusr] Max Function

[Stephen McMillan]

Brian,
Perhaps attached sample script will help your case.  It uses a search domain
of "nearest gridpoint +/- a grid" but can be adjusted to a larger maxing
domain.
Stephen Mc

On Mon, Aug 29, 2011 at 2:13 PM, Arlindo da Silva <dasilva at alum.mit.edu>wrote:

> On Thu, Aug 18, 2011 at 9:59 AM, Walsh, Brian J <brian.walsh at amec.com>wrote:
>
>>  Hello Grads Users,****
>>
>> ** **
>>
>> I’m trying to calculate the maximum 3-hourly precipitation amounts from
>> one model in a given domain.****
>>
>> ** **
>>
>> So, for instance, if I choose a point (say 46.0 N 57.0W), I would like to
>> get the maximum 3-hourly precipitation amounts from the GFS for the
>> surrounding grid points (i.e. I don’t want a point forecast prediction).
>> I’m not sure if I can have it output the maximum amount from the nearest
>> neighbor grid points or if I need to specify a domain.****
>>
>> ** **
>>
>> I’ve tried the max function without success and was hoping someone may
>> have done something similar and it worked.  I’m looking to output the data
>> into a file, not plot it.****
>>
>> ** **
>>
>> Any help would be greatly appreciated.****
>>
>> **
>>
>
> With careful design of a coarser grid, the re() extension in opengrads
> could be used to regrid the original data to a coarser grid using the box
> averaging method and get what you want. No need to write a separate file,
> just do the regridding on the fly. More more info, see here:
>
>    http://opengrads.org/doc/udxt/re/
>
>      Arlindo
>
> --
> Arlindo da Silva
> dasilva at alum.mit.edu
>
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> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>

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