Re: area_hi2lores question

Hi Ian,

Yes, I believe that "area_hi2lores" will do the type of
'tiling' you describe if you provide the appropriate
latitudes and longitudes.

I will send you the underlying code in a separate email.

Cheers
D

Ian Harris wrote:
> Hi
>
> I need to progressively loosen the resolution of a gridded dataset.
>
> For example, I have model output from INGVSX that is 160 (lats) x 320 (lons).
>
> I would like to produce lower res versions, produced by taking consecutive 2x2 blocks of cells and weightlessly averaging them, then taking 3x3, and finally 4x4. These blocks do not overlap; they 'tile' the original grid.
>
> Obviously this would take a long time if I did it with loops! However, I found area_hi2lores, which looks as if it could help. What I need to know is this:
>
> If I give area_hi2lores some coordinates that point to the centres of tiled blocks of (say) 16 cells, will all 16 cells be included in the scope of the output value, or is the scope calculated as a circle of influence, thus missing the corner cells?
>
> _ _ _ _
> |X|_|_|X|
> |_|_|_|_|
> |_|_|_|_|
> |X|_|_|X|
>
> I hope I've explained that properly!
>
> Cheers
>
> Harry
> Ian "Harry" Harris
> Climatic Research Unit
> School of Environmental Sciences
> University of East Anglia
> Norwich NR4 7TJ
> United Kingdom
>
> IMPORTANT NOTICE - This email is intended for the named recipient only. It may contain privileged and confidential information. If you are not the intended recipient, notify the sender immediately and destroy this email. You must not copy, distribute or take action in reliance upon it. Whilst all efforts are made to safeguard emails, The School of Environmental Sciences cannot guarantee that attachments are virus free or compatible with your systems and does not accept liability in respect of viruses or computer problems experienced.
>
>
>
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Mon Mar 8 13:59:34 2010