NCL does not read Excel spradsheeys.
You would have to convert to ascii, the use asciiread.
"natvar" is high quality but is known to be slow.
Really, if you have a large number of high res\
grids you need interpolated to an RCM grid,
there is not magic bullet. it will take time.
The following *may* be useful.
http://www.ncl.ucar.edu/Document/Functions/Built-in/triple2grid2d.shtml
Good luck
On 2/3/11 12:02 PM, Debasish wrote:
> Dear NCL Users
>
> I guess I am getting missing outputs because of the assumption that xin
> is gridded RCM data because neither lon proceeds left to right nor lat
> proceeds from south-to-north.
>
> I have tried to use "natgrid" assuming xi (mxn) with lat(mxn) and
> lon(mxn) but the program is hang. I guess it does not work too.
>
> Therefore, I would like to know how do I interpolate this data (high
> resolution data) to RCM grid with lat2d(172,180), lon2d(172,180).
> Meanwhile I counted that there are nearly 450 RCM grid over the input
> domain; so I would like to interpolate the input data to this 450 CRCM
> grid.
> I am sending the part (total file has 17536 lat, lon and xin) of lat and
> lon of the input data for your convenience .
>
> Any help in this regard will be appreciated
>
> Thanks
>
> Debasish
>
> =
>
>
>
> Begin forwarded message:
>
>> *From: *Debasish <debasish@sca.uqam.ca <mailto:debasish@sca.uqam.ca>>
>> *Date: *1 février 2011 16:42:48 HNE
>> *To: *Ncl Talk <ncl-talk@ucar.edu <mailto:ncl-talk@ucar.edu>>
>> *Subject: **[ncl-talk] interpolation gridded data to rcm*
>>
>> Dear NCL users,
>>
>> I have gridded data xin (m,n) with lat(m,n) and lon(m,n) for smaller
>> domain. I would like to interpolate the data to RCM grid lat2d(a,b)
>> and lon2d(a,b) for bigger domian.
>> I follow the followings steps:
>>
>> 1. I assume "xin" as RCM gridded data
>> 2. convert lat2d and lon2d to 1d array lat1d and lon1d
>> 3. Use "rcm2points" function
>> xout1d = rcm2points(lat,lon,xin,lat1d,lon1d,0)
>> 4. then convert xout1d to 2d
>> but all the values of xout1d are missing
>>
>> Any suggestion to fix these problem will be appreciated
>>
>> Thanks
>>
>> Debasish
>> _______________________________________________
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>
> =
>
>
>
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Received on Thu Feb 3 12:36:21 2011
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