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]]
?diff HTH, Jorge.- On Mon, Sep 24, 2012 at 9:00 PM, Hermann Norpois <hnorpois@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]] > > ______________________________________________ > R-help@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]]
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.- 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]] > > ______________________________________________ > 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.