Re: Regridding from irregular to regular 2d grid

Not exactly clear on what type of grid you are interpolating to:

http://www.ncl.ucar.edu/Document/Functions/Contributed/obj_anal_ic.shtml

would work for interpolation to a rectilinear grid.

D

Oliver.Fuhrer@meteoswiss.ch wrote:
> Hi all,
>
> Say I have values z(i,j) at positions x(i,j) and y(i,j) where i=1..ni
> and j=1..nj and I would like to interpolate them to a new field
> z0(ii,jj) at positions x(ii) and y(jj) where ii=1..nii and jj=1..njj. Is
> there any other function except rcm2rgrid which does this type of
> regridding (say from rotated lat/lon to lat/lon) in one step? rcm2rgrid
> is fine, but it is limited to inverste distance weighted interpolation
> (of which the weights cannot be controlled). I would be intersted for
> example in bilinear interpolation.
>
> There are a lot of routines in NCL which do interpolation (dsgrid2,
> natgrid) but these usually do not take advantage of the strucutre of the
> input positions and thus can be very slow for interpolation.
>
> Thanks,
> Oli
>
>
> ________________________________________
>
> Oliver Fuhrer
> Numerical Models
>
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Received on Thu Dec 17 10:55:19 2009