R help - Jun 2016 - Generate list if sequence form two vector element

Hi,
I want to do the follow thing 

Input : 
a <- c(1,3,6,9) 


b<-c(10,7,20,2) 


Expected outcome : 

d<-list(1:10,3:7,6:20,2:9) 



Thanks !!


 
Tanvir Ahamed 
G?teborg, Sweden  |  mashranga at yahoo.com

Hi Tanvir,
Not at all elegant, but:

make.seq<-function(x) return(seq(x[1],x[2]))
apply(matrix(c(a,b),ncol=2),1,make.seq)

Jim


On Wed, Jun 22, 2016 at 5:32 PM, Mohammad Tanvir Ahamed via R-help
<r-help at r-project.org> wrote:
> Hi,
> I want to do the follow thing
>
> Input :
> a <- c(1,3,6,9)
>
>
> b<-c(10,7,20,2)
>
>
> Expected outcome :
>
> d<-list(1:10,3:7,6:20,2:9)
>
>
>
> Thanks !!
>
>
>
> Tanvir Ahamed
> G?teborg, Sweden  |  mashranga at yahoo.com
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.

On 22/06/16 20:00, Jim Lemon wrote:
> Hi Tanvir,
> Not at all elegant, but:
>
> make.seq<-function(x) return(seq(x[1],x[2]))
> apply(matrix(c(a,b),ncol=2),1,make.seq)
Not sure that this is more "elegant" but it's a one-liner:

  lapply(1:length(a),function(i,a,b){a[i]:b[i]},a=a,b=b)

cheers,

Rolf
> On Wed, Jun 22, 2016 at 5:32 PM, Mohammad Tanvir Ahamed via R-help
> <r-help at r-project.org> wrote:
>> Hi,
>> I want to do the follow thing
>>
>> Input :
>> a <- c(1,3,6,9)
>>
>>
>> b<-c(10,7,20,2)
>>
>>
>> Expected outcome :
>>
>> d<-list(1:10,3:7,6:20,2:9)

Hi

what about

mapply(":", a, b)

Sometimes R can behave like a magic.

Cheers
Petr

> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Jim
Lemon
> Sent: Wednesday, June 22, 2016 10:01 AM
> To: Mohammad Tanvir Ahamed <mashranga at yahoo.com>
> Cc: R-help Mailing List <r-help at r-project.org>
> Subject: Re: [R] Generate list if sequence form two vector element
>
> Hi Tanvir,
> Not at all elegant, but:
>
> make.seq<-function(x) return(seq(x[1],x[2]))
> apply(matrix(c(a,b),ncol=2),1,make.seq)
>
> Jim
>
>
> On Wed, Jun 22, 2016 at 5:32 PM, Mohammad Tanvir Ahamed via R-help <r-
> help at r-project.org> wrote:
> > Hi,
> > I want to do the follow thing
> >
> > Input :
> > a <- c(1,3,6,9)
> >
> >
> > b<-c(10,7,20,2)
> >
> >
> > Expected outcome :
> >
> > d<-list(1:10,3:7,6:20,2:9)
> >
> >
> >
> > Thanks !!
> >
> >
> >
> > Tanvir Ahamed
> > G?teborg, Sweden  |  mashranga at yahoo.com
> >
> > ______________________________________________
> > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > 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.
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.
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