[R] Averaging 'blocks' of data
Adam D. I. Kramer
adik-rhelp at ilovebacon.org
Tue Sep 9 00:18:17 CEST 2008
You probably want to check out ?by or ?aggregate, maybe using
(rownames(df) %/% 60) : (colnames(df) %/% 60) as your index variable.
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.
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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