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resample one grid to another in IDV?

I have data from a LambertConformal model grid M over the pacific northwest. I'd like to compare the model values (for say geopotential height) with the RUC20 grid R.
Manually, I can project M's x,y points to lat,lon, then project those lat/lons back to the x,y grid points of R and resample R's values (using e.g. weighted average) and assign the values to a new grid M'.
Can I do this visually in IDV, so that a two pane display will show M and M', with the default map area for both just M, i.e. not the much bigger R.
If not in IDV, does anyone know of a toolset to do this? I have noted the many tools under 

http://www.unidata.ucar.edu/software/netcdf/software.html

but none seems to quite do what I want.

Any help appreciated

Stuart Maclean
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