[R] generate sequences for every element of a vector

[R. Michael Weylandt <michael.weylandt@gmail.com>]

Untested, wouldn't outer(x, 0:n,"+") work as well and be a little faster?

M

On Oct 7, 2011, at 9:58 AM, Dimitris Rizopoulos <d.rizopoulos at erasmusmc.nl> wrote:

> One option is:
> 
> x <- c(3, 8, 14, 24, 34, 40)
> c(sapply(x, seq, length = 3))
> 
> 
> I hope it helps.
> 
> Best,
> Dimitris
> 
> 
> On 10/7/2011 3:40 PM, Martin Batholdy wrote:
>> Dear R-List,
>> 
>> 
>> I have the following problem:
>> 
>> I have a vector that looks like this:
>> 
>> x<- c(3, 8, 14, 24, 34, 40)
>> 
>> 
>> And I would like to make a sequence out of every element, starting at the value of this element.
>> 
>> So that I get a vector just like this:
>> 
>> x<- c(3, 4, 5,     8, 9, 10,      14, 15, 16,       24, 25, 26,       34, 35, 36,      40, 41, 42)
>> 
>> 
>> 
>> 
>> How can I do this without looping over the whole vector or something like this?
>> 
>> 
>> thanks for any suggestions!
>> ______________________________________________
>> 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.
>> 
> 
> -- 
> Dimitris Rizopoulos
> Assistant Professor
> Department of Biostatistics
> Erasmus University Medical Center
> 
> Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
> Tel: +31/(0)10/7043478
> Fax: +31/(0)10/7043014
> Web: http://www.erasmusmc.nl/biostatistiek/
> 
> ______________________________________________
> 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.