Averaging 'blocks' of data
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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