Hi Jim,
First, I think it's better if you reply to the list, other users might
be interested and have better answers.
Second, as other replies showed you, using a list is actually way easier
than creating new objects every time. Check especially the reply from
Joshua Wiley, which gives you great examples and guidance.
Last, regarding rm(list=ls()), what's the point of creating new objects
in your loop if you remove them right after?! Maybe you intend to do
stuff on them first. Anyway, I don't use Emacs so not sure why you do it
that way. Just my limited opinion.
HTH,
Ivan
Le 9/17/2010 12:35, Maas James Dr (MED) a écrit :
>
> Hi Ivan,
>
> Thanks for suggestions, was just hoping to do it all in one step,
> creating a list and then filling it all seems rather complicated ...
> will look up *apply.
>
> As for removing objects, I run R interactively from within Emacs (ESS)
> and stuff hangs around for successive evaluations, not sure where it
> came from so I clean it out every time ... is there a better way?
>
> Thanks
>
> Jim
>
> Message: 65
>
> Date: Thu, 16 Sep 2010 18:03:29 +0200
>
> From: Ivan Calandra <ivan.calan...@uni-hamburg.de>
>
> To: r-help@r-project.org
>
> Subject: Re: [R] using variable from for loop in naming new variables
>
> Message-ID: <4c923fd1.8000...@uni-hamburg.de>
>
> Content-Type: text/plain
>
> Hi!
>
> assign() should do the job.
>
> But using a list, and filling each element iteratively (with a for loop
>
> or with *apply() ) might be better, up to you.
>
> Btw, why do you remove your objects?
>
> HTH,
>
> Ivan
>
> Le 9/16/2010 17:44, Maas James Dr (MED) a ?crit :
>
> > Simple one here ... but can't get it to work ...
>
> >
>
> > for (i in 1:4){
>
> > paste("stuff",[i]),sep="")<- 3 + i
>
> > }
>
> >
>
> > ls()
>
> > rm(list=ls())
>
> >
>
> >
>
> >
>
> > I just want it to create 4 new variables called stuff1, stuff2,
> stuff3, stuff4 with the corresponding assignments. I realise that
> there are more elegant functions but this is just a model of a bigger
> situation.
>
> >
>
> > Thanks
>
> >
>
> > Jim
>
> >
>
> ===============================
>
> Dr. Jim Maas
>
> Research Associate in Network Meta-Analysis
>
> School of Medicine, Health Policy and Practice
>
> CD Annex, Room 1.04
>
> University of East Anglia
>
> Norwich, UK
>
> NR4 7TJ
>
> +44 (0) 1603 591412
>
--
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
Abt. Säugetiere
Martin-Luther-King-Platz 3
D-20146 Hamburg, GERMANY
+49(0)40 42838 6231
ivan.calan...@uni-hamburg.de
**********
http://www.for771.uni-bonn.de
http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php
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