[R] Any simple way to make this happen?

[William Dunlap]

  > x <- c(4,3,5)
  > y <- c(1,2,3,4,1,2,3,1,2,3,4,5)
  > all.equal(y, sequence(x))
  [1] TRUE

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 Haoda Fu
> Sent: Friday, December 28, 2012 9:43 AM
> To: r-help at r-project.org
> Cc: haodafu at yahoo.com
> Subject: [R] Any simple way to make this happen?
> 
> Hi,
> 
> The data is
> 
> x <- c(4,3,5);
> I need to translate it to
> y <- c(1,2,3,4,1,2,3,1,2,3,4,5);
> i.e. for each number in x, we need to generate 1:x and put it in y.
> 
> The program need to evaluate this type of calculation for millions of times in simulation.
> Is there any elegant way to make this happen without iteration?
> 
> Many thanks!!
> 
> Best,
> Haoda
> 	[[alternative HTML version deleted]]
> 
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