R help - Feb 2012 - iterating through for loop

how to iterate two elements each through for loop?
e.g. x<-c(1,2,4,7,34,6)
y<-c(3,5,6,9,34,7)

for(z in x){
print(paste(z,y))  }


i want both element of vector iterate serially with same position


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Hi
> [R] iterating through for loop
> 
> how to iterate two elements each through for loop?
> e.g. x<-c(1,2,4,7,34,6)
> y<-c(3,5,6,9,34,7)
> 
> for(z in x){
> print(paste(z,y))  }
> 
> 
> i want both element of vector iterate serially with same position
Not sure what the result shall be. but

paste(x,y)

and

do.call(paste, lapply(expand.grid(x,y), paste))

is what comes to my mind.

If you want something else please follow rules suggested in posting guide.

Regards
Petr

> 
> 
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> View this message in context: http://r.789695.n4.nabble.com/iterating-
> through-for-loop-tp4354101p4354101.html
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> 
> ______________________________________________
> R-help at r-project.org mailing list
> 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.

Use a common subscript to go through two or more objects in
parallel:
  > x<-c(1,2,4,7,34,6)
  > y<-c(3,5,6,9,34,7)
  > stopifnot(length(x)==length(y))
  > for(i in seq_along(x)) {
  +    print(paste(x[i], y[i]))
  + }
  [1] "1 3"
  [1] "2 5"
  [1] "4 6"
  [1] "7 9"
  [1] "34 34"
  [1] "6 7"

For this toy example it is easier to just compute
  paste(x, y)
but I assume you plan on doing something more
substantial that isn't already vectorized.

Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com 
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at
r-project.org] On Behalf Of sagarnikam123
> Sent: Friday, February 03, 2012 1:32 AM
> To: r-help at r-project.org
> Subject: [R] iterating through for loop
> 
> how to iterate two elements each through for loop?
> e.g. x<-c(1,2,4,7,34,6)
> y<-c(3,5,6,9,34,7)
> 
> for(z in x){
> print(paste(z,y))  }
> 
> 
> i want both element of vector iterate serially with same position
> 
> 
> --
> View this message in context:
http://r.789695.n4.nabble.com/iterating-through-for-loop-
> tp4354101p4354101.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> ______________________________________________
> R-help at r-project.org mailing list
> 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.