Re: [R] loop

From: Petr PIKAL <petr.pikal_at_precheza.cz>
Date: Thu, 06 Mar 2008 14:30:35 +0100

Hi

r-help-bounces_at_r-project.org napsal dne 05.03.2008 18:04:35:

> Thank you Yinghai, that's what I need :-)!
>
> Yinghai Deng <yinghai.deng_at_bri.nrc.ca> schrieb: m <- seq(-1,1,0.1)
> x1 <- c()
> x2 <- c()
> for(i in 1:length(m)){
> x1[i] <- m[i]
> x2[i] <- m[i]^2
> }
> dat <- data.frame(x1,x2)

The same result you will get by

dat2<-data.frame(x1=m, x2=m^2)
> all.equal(dat,dat2)

[1] TRUE Regards
Petr

>
> -----Original Message-----
> From: r-help-bounces_at_r-project.org
> [mailto:r-help-bounces_at_r-project.org]On Behalf Of Neuer Arkadasch
> Sent: March 5, 2008 10:00 AM
> To: r-help_at_stat.math.ethz.ch
> Subject: [R] loop
>
>
> Hello all,
>
> I am trying to use
>
> m <- seq(-1,1,0.1)
> x1 <- vector()
> x2 <- vector()
> for(i in m){
> x1[i] <- i
> x2[i] <- i^2
> }
> dat <- data.frame(x1,x2)
> But, I have false result
> >dat
> x1 x2
> 1 1 1
>
> could some tell me how it is possible to do this?
>
> Thank you!
>
>
>
>
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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 06 Mar 2008 - 13:55:26 GMT

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