Hi Steve,
You probably want to check out ?by or ?aggregate, maybe using
(rownames(df) %/% 60) : (colnames(df) %/% 60) as your index variable.
--Adam
On Sun, 7 Sep 2008, Steve Murray wrote:
Dear all,
I have a large dataset which I hope to reduce in size, to make it more
useable. I hope to do this by taking an average of each 60 x 60 blockof
values and forming a new data frame out of the averaged values.
How would I go about taking averages of 60 x 60 'blocks' in R, and cycling
through the whole dataset, recording each calculated value in a new
table/data frame?
Many thanks for any advice offered.
Steve
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