Re: [R] Using loop numbers in write.csv

From: Erik Iverson <iverson_at_biostat.wisc.edu>
Date: Thu, 13 Mar 2008 12:23:05 -0500

See ?paste and ?assign, those will get what you want done.

At least in the second case, you might consider using a list, however. You can then avoid the use of 'for' loops by using functions such as lapply.

Best,
Erik Iverson

Economics Guy wrote:
> This is a question I have wanted to ask for a while but hesitated
> because I was sut sure I would find the answer on my own, but as of
> yet...no dice.
>
> 1) Is there a way to use the loop number in naming things in R.
> Specifically I have a simulation that has two loops. I would like to
> be able to write out the results to a csv file after each iteration.
>
> something like:
>
>
> for (i in 1:10){
>
> exampleMatrix <- matrix(runif(25, 0, 1),5, 5)
>
> write.csv(exampleMatrix, file = "resultsMatrix_i.csv")
>
> }
>
> Where I would get 10 csv files named resultsMatrix_1, resultsMatrix_2
> ... resultsMatrix_10.
>
>
> 2) On a similar note is there a way to use the loop number when naming things.
>
> something like:
>
>
> for (i in 1:10){
>
> exampleMatrix_i <- matrix(runif(25, 0, 1),5, 5)
>
> }
>
> Where I would then have 10 matrices in memory with the names
> exampleMatrix_1, exampleMatrix_2 ... exampleMatrix_10.
>
> Thanks,
>
> EG
>
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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Thu 13 Mar 2008 - 17:29:02 GMT

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