Message-ID: <47D962F9.30400@biostat.wisc.edu>
Date: 2008-03-13T17:23:05Z
From: Erik Iverson
Subject: Using loop numbers in write.csv
In-Reply-To: <5dedcf4c0803131007i4703d582k12bb8abf7179d660@mail.gmail.com>
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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