Nearest Neighbor on Lambert Conformal Grid - REPOST

[Walsh, Brian J]

Hello,
 
I'm trying to extract data from a NAM model grid which is Lambert
conformal and I am getting values between 0 and 1 for the categorical
rain, snow, freezing rain and ice pellets.  This appears to be an issue
with interpolation and I need it to get data from the nearest neighbor
point.  The question is, how do I do this?  I tried adding an argument
to the grib2ctl.pl script, but this didn't work.  
 
Any ideas would be helpful.
 
Thanks,
 
Brian


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