[R] Subsetting an array by a vector of dimensions
Richard Pearson
richard.pearson at postgrad.manchester.ac.uk
Fri Jul 11 16:53:55 CEST 2008
Hi
Is it possible to subset an n-dimensional array by a vector of n dimensions? E.g. assume I have
> x <- array(1:24, dim=2:4)
> x[1,1,2]
[1] 7
> dims <- c(1,1,2)
I would like a function that I can supply x and dims as parameters to, and have it return 7. Also, I would like to do something like:
> x[1,1,]
[1] 1 7 13 19
> dims2<- c(1,1,NA)
And have a function of x and dims2 that gives me back [1] 1 7 13 19
Does such a thing exist?
Thanks
Richard
--
Richard D. Pearson richard.pearson at postgrad.manchester.ac.uk
School of Computer Science, http://www.cs.man.ac.uk/~pearsonr
University of Manchester, Tel: +44 161 275 6178
Oxford Road, Mob: +44 7971 221181
Manchester M13 9PL, UK. Fax: +44 161 275 6204
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