Re: [R] algorithm help

2011-01-07 Thread Rainer M Krug
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 01/06/2011 11:57 PM, (Ted Harding) wrote: > On 06-Jan-11 22:16:38, array chip wrote: >> Hi, I am seeking help on designing an algorithm to identify the >> locations of stretches of 1s in a vector of 0s and 1s. Below is >> an simple example: >> >>> d

Re: [R] algorithm help

2011-01-06 Thread array chip
Thanks very much Bill, good catch! John From: William Dunlap Cc: r-h...@stat.math.ethz.ch Sent: Thu, January 6, 2011 3:52:47 PM Subject: RE: [R] algorithm help > -Original Message- > From: r-help-boun...@r-project.org > [mailto:r-help-

Re: [R] algorithm help

2011-01-06 Thread William Dunlap
> -Original Message- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of array chip > Sent: Thursday, January 06, 2011 3:29 PM > To: ted.hard...@wlandres.net > Cc: r-h...@stat.math.ethz.ch > Subject: Re: [R] algorithm help >

Re: [R] algorithm help

2011-01-06 Thread array chip
97 971 John From: "ted.hard...@wlandres.net" Cc: r-h...@stat.math.ethz.ch Sent: Thu, January 6, 2011 2:57:47 PM Subject: RE: [R] algorithm help On 06-Jan-11 22:16:38, array chip wrote: > Hi, I am seeking help on designing an algorithm to identify the >

Re: [R] algorithm help

2011-01-06 Thread Ted Harding
On 06-Jan-11 22:16:38, array chip wrote: > Hi, I am seeking help on designing an algorithm to identify the > locations of stretches of 1s in a vector of 0s and 1s. Below is > an simple example: > >> dat<-as.data.frame(cbind(a=c(F,F,T,T,T,T,F,F,T,T,F,T,T,T,T,F,F,F,F,T) > ,b=c(4,12,13,16,18,20,28,

Re: [R] algorithm help

2011-01-06 Thread Carl Witthoft
try this: ?rle Carl ** From: array chip Date: Thu, 06 Jan 2011 14:16:38 -0800 (PST) Hi, I am seeking help on designing an algorithm to identify the locations of stretches of 1s in a vector of 0s and 1s. Below is an simple example: > dat<-as.data.frame(cbind(a=c(F,F,T,T,T,T,F,F,T,