Message-ID: <1348490719.3210.YahooMailNeo@web142606.mail.bf1.yahoo.com>
Date: 2012-09-24T12:45:19Z
From: arun
Subject: serial subtraction within a vector
In-Reply-To: <CAKL8G3GVNAxbePzvcAgGBcw7c5p2vcwzFc7wnxwqoOdEefxhdg@mail.gmail.com>
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.-
On Mon, Sep 24, 2012 at 9:00 PM, Hermann Norpois <hnorpois at googlemail.com>wrote:
> 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]]
>
> ______________________________________________
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> 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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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.