[R] Resample a matrix (table)

[Luca Penasa]

I have a matrix of values... for exemple the matrix could be 100 rows
and 50 columns...
I would like to resample the matrix to obtain a new matrix -> a 10x5 matrix
So i need to calculate a new value for every cell, i would like to use a
weightened mean to do this. I explain this thing better:
In the exemple the original matrix would be divided into 50
partial-matrix, for every partial-matrix should be extracted a value
obtained from a weightened mean: the cell at center of the
partial-matrix should have the max importance into the mean, the fhurter
cell should have the lower importance (something like a gaussian shape,
where i can decide the sigma used).... In this way i'll obtain a
resampled matrix with the values calculated using a weightened mean of
the single partial-matrix...

Is there anybody who can suggest me a way to do this??? is there a
function that can do this?

PS: sorry for my english... and... im a newbie, please try to explain in
a simple way.. thank you

Luca Penasa,
geology student,
University of Padua, Italy


 
 
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