Re: f2gsh with missing values

> I wanted to interpolate observational precipitation data(2.5x2.5) into
>CAM T42 grid. Seems f2gsh cannot deal with the input array which contains
>missing values. Is there any way I can still use this function to do such
>interpolation?
>_______________________________________________

[1] The "f2gsh" uses spherical harmonics ... think FFTs.
    These do not allow missing values.
    
    Even if you had no missing values, using spherical
    harmonics ib not a food idea foe fields that
    are bounded. Precip is bounded by 0.0
    
[2] I recommend bi-linear interpolation

 http://www.ncl.ucar.edu/Document/Functions/Contributed/linint2_Wrap.shtml
 

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good luck
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