[R] extract index during execution of sapply
bolker at ufl.edu
Fri Jun 22 15:23:08 CEST 2007
Christian Bieli <christian.bieli <at> unibas.ch> writes:
> Hi there
> During execution of sapply I want to extract the number of times the
> function given to supply has been executed. I came up with:
> mylist <- list(a=3,b=6,c=9)
> This works fine, but looks quite ugly. I'm sure that there's a more
> elegant way to do this.
> Any suggestion?
I would love to have an answer to this -- when I run
into this kind of problem I usually end up using mapply:
e.g., suppose I have
mylist <- replicate(5,list(x=runif(10),y=runif(10)),simplify=FALSE)
and I want to plot each element in a different color. I'd like
to be able to do
but instead I do
would it be too ugly to have a special variable called INDEX
that could be used within an sapply/lapply statement?
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