[R] how do you interpolate a gaussian grid to a standard 2.5 degree grid?

[Jenny Barnes]

Dear R-help community,

I have looked on the R search site and archives but cannot find mention of a way 
of interpolating a gaussian distribution of data to a standard 2.5 degree grid. 

I have two global dataset and I need to correlate - unfortunately one is a 2.5 
degree grid dim[longitude=144,latitude=72] and one is gaussian 
dim[longitude=192,latitude=94].

I would rally appreciate hearing back from any of you who may have wanted to 
interpolate your data is this way. If there is no ready-made function you know 
of but you are willing to share your own methods I would also appreciate any 
pointers.

Many thanks for your time,

Jenny Barnes


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jennifer Barnes
PhD student - long range drought prediction
Climate Extremes
Department of Space and Climate Physics
University College London
Holmbury St Mary, Dorking
Surrey
RH5 6NT
Web: http://climate.mssl.ucl.ac.uk