Message-ID: <40069A5A.9020009@statistik.uni-dortmund.de>
Date: 2004-01-15T13:49:14Z
From: Uwe Ligges
Subject: A language technical question.
In-Reply-To: <5.2.0.9.0.20040115142509.00bafce8@kiev.biotech.kth.se>
Johan Lindberg wrote:
> If I have 100 objekts in a folder and I prefer not to load them manually
> I wonder how I do this in R if using a for-loop.
>
> I was thinking initially to do something like this:
>
> infiles <- dir(pattern=".RData")
For sure you mean
infiles <- dir(pattern = "\\.RData")
> for(i in length(infiles))
This won't work. I'd try
for(i in 1:length(infiles))
or much better:
for(i in seq(along = infiles))
> {
> load(infiles[i])
> paste("kalle", i, sep="") <- saveLoadReference
Whatever saveLoadReference is ... try
assign(paste("kalle", i, sep=""), saveLoadReference)
Please note that it might be a good idea to use a list "kalle" with
elements corresponding to the different "saveLoadReference" objects. So
that you don't mess up you workspace with many objects ....
Uwe Ligges
> }
>
> But the line """paste("kalle", i, sep="")""" does not do it for me. I
> get the error message "Error: Target of assignment expands to
> non-language object"
>
> The thing that I do not master is how to create a name in a for-loop
> that I can assign something to. And I want to be able to change that
> name as the loop goes on. I want to create in this case
> kalle1
> kalle2
> kalle3
> ...
> kalle100
>
> and they should all represent the objects that I opened with
> load(infiles[i])
>
>
> Best regards
>
> / Johan
>
>
>
> *******************************************************************************************
>
> Johan Lindberg
> Royal Institute of Technology
> AlbaNova University Center
> Stockholm Center for Physics, Astronomy and Biotechnology
> Department of Molecular Biotechnology
> 106 91 Stockholm, Sweden
>
> Phone (office): +46 8 553 783 45
> Fax: + 46 8 553 784 81
> Visiting adress: Roslagstullsbacken 21, Floor 3
> Delivery adress: Roslagsv?gen 30B
>
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