serial subtraction within a vector

An embedded and charset-unspecified text was scrubbed...
Name: not available
URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20120924/310befac/attachment.pl>

Hello,

Try diff(v)

Hope this helps,

Rui Barradas
Em 24-09-2012 12:00, Hermann Norpois escreveu:

Hello,

I have a vector (numeric) v-> c(a,b,c,d,e) and I want to create the vector
n->c(b-a,c-b,d-c,e-d). How can I do that?


Thank you
Hermann

	[[alternative HTML version deleted]]

______________________________________________
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.

Hi

I suppose you want

diff(v)

Regards
Petr

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
project.org] On Behalf Of Hermann Norpois
Sent: Monday, September 24, 2012 1:01 PM
To: r-help at r-project.org
Subject: [R] serial subtraction within a vector

Hello,

I have a vector (numeric) v-> c(a,b,c,d,e) and I want to create the
vector
n->c(b-a,c-b,d-c,e-d). How can I do that?


Thank you
Hermann

	[[alternative HTML version deleted]]

______________________________________________
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.

Hi,

#Just to add:
?v<-c(3,5,8,4,9)
?diff(v)
#[1]? 2? 3 -4? 5
#if it is a dataframe,
v1<-as.data.frame(v)
?lapply(v1,diff)
apply(v1,2,diff)

A.K.




----- Original Message -----
From: Jorge I Velez <jorgeivanvelez at gmail.com>
To: Hermann Norpois <hnorpois at googlemail.com>
Cc: r-help at r-project.org
Sent: Monday, September 24, 2012 8:19 AM
Subject: Re: [R] serial subtraction within a vector

?diff

HTH,
Jorge.-

Hello,

I have a vector (numeric) v-> c(a,b,c,d,e) and I want to create the vector
n->c(b-a,c-b,d-c,e-d). How can I do that?


Thank you
Hermann

? ? ? ?  [[alternative HTML version deleted]]

______________________________________________
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.

??? [[alternative HTML version deleted]]

______________________________________________
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.