R help - Aug 2008 - produce variable on the fly

Hi guys,

I want to create variable on the fly: for example

for (i in 1:10) {
    cat(paste("VAR",i,sep=""))
}
Will print VAR1, VAR2 etc up to VAR10. However I want to make these into
variables, and then give them a value, for example:

vect = c(10:20)

for (i in 1:10) {
    cat(paste("VAR",i,sep="")) = vect[i]
}

THis doesnt work but I hope it demonstrates what I'm trying to do: I'm
trying to produce 10 variables, from VAR1 to VAR10, which have the numbers
11...20 respectively, so I would end up with 

VAR1 = 11
VAR2 = 12
...
VAR10 = 20

Hope this makes sense!! Does anyone have any ideas?
-- 
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Sent from the R help mailing list archive at Nabble.com.

On Tue, 12 Aug 2008, jimineep wrote:
>
> Hi guys,
>
> I want to create variable on the fly: for example

See

 	?assign

HTH,

Chuck
>
> for (i in 1:10) {
>    cat(paste("VAR",i,sep=""))
> }
> Will print VAR1, VAR2 etc up to VAR10. However I want to make these into
> variables, and then give them a value, for example:
>
> vect = c(10:20)
>
> for (i in 1:10) {
>    cat(paste("VAR",i,sep="")) = vect[i]
> }
>
> THis doesnt work but I hope it demonstrates what I'm trying to do:
I'm
> trying to produce 10 variables, from VAR1 to VAR10, which have the numbers
> 11...20 respectively, so I would end up with
>
> VAR1 = 11
> VAR2 = 12
> ...
> VAR10 = 20
>
> Hope this makes sense!! Does anyone have any ideas?
> -- 
> View this message in context:
http://www.nabble.com/produce-variable-on-the-fly-tp18943749p18943749.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.
>
Charles C. Berry                            (858) 534-2098
                                             Dept of Family/Preventive Medicine
E mailto:cberry at tajo.ucsd.edu	            UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/  La Jolla, San Diego 92093-0901

?assign , or consider a named vector/list.

jimineep wrote:
> Hi guys,
> 
> I want to create variable on the fly: for example
> 
> for (i in 1:10) {
>     cat(paste("VAR",i,sep=""))
> }
> Will print VAR1, VAR2 etc up to VAR10. However I want to make these into
> variables, and then give them a value, for example:
> 
> vect = c(10:20)
> 
> for (i in 1:10) {
>     cat(paste("VAR",i,sep="")) = vect[i]
> }
> 
> THis doesnt work but I hope it demonstrates what I'm trying to do:
I'm
> trying to produce 10 variables, from VAR1 to VAR10, which have the numbers
> 11...20 respectively, so I would end up with 
> 
> VAR1 = 11
> VAR2 = 12
> ...
> VAR10 = 20
> 
> Hope this makes sense!! Does anyone have any ideas?

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Nom : non disponible
URL :
<https://stat.ethz.ch/pipermail/r-help/attachments/20080812/baa3900a/attachment.pl>

jimineep <jamesrperkins <at> hotmail.com> writes:
> 
> 
> Hi guys,
> 
> I want to create variable on the fly: for example
> 
> for (i in 1:10) {
>     cat(paste("VAR",i,sep=""))
> }
> Will print VAR1, VAR2 etc up to VAR10. However I want to make these into
> variables, and then give them a value, for example:
> 
> vect = c(10:20)
> 
> for (i in 1:10) {
>     cat(paste("VAR",i,sep="")) = vect[i]
> }
> 
  This is almost a candidate for a FAQ: see

http://wiki.r-project.org/rwiki/doku.php?id=tips:data-misc:create_var_names

for the answer ("assign") and some reasons why it might be better to
use lists
instead.

  Ben Bolker

On Tue, 12 Aug 2008, Ben Bolker wrote:
> jimineep <jamesrperkins <at> hotmail.com> writes:
>
>>
>>
>> Hi guys,
>>
>> I want to create variable on the fly: for example
>>
>> for (i in 1:10) {
>>     cat(paste("VAR",i,sep=""))
>> }
>> Will print VAR1, VAR2 etc up to VAR10. However I want to make these
into
>> variables, and then give them a value, for example:
>>
>> vect = c(10:20)
>>
>> for (i in 1:10) {
>>     cat(paste("VAR",i,sep="")) = vect[i]
>> }
>>
>
>  This is almost a candidate for a FAQ: see
>
It *is*  FAQ 7.21.

      -thomas


Thomas Lumley			Assoc. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle