Re: [R] row selection

2009-10-11 Thread Bernardo Rangel Tura
On Thu, 2009-10-08 at 16:14 -0400, Ashta wrote: > Hi all, > I have a matrix named x with N by C > I want to select every 5 th rrow from matrix x > I used the following code > n<- nrow(x) > > for(i in 1: n){ > + b <- a[i+5,] > >b > } > Error: subscript out of bounds > > Can any body point out th

Re: [R] row selection

2009-10-09 Thread David Winsemius
n){ + b <- a[i+5,] b } sc < x[seq(1, nrow(x), by=5), ] -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org ] On Behalf Of David Winsemius Sent: Thursday, October 08, 2009 4:19 PM To: Ashta Cc: R help Subject: Re: [R] row selection On

Re: [R] row selection

2009-10-09 Thread Nutter, Benjamin
Cc: r-help@r-project.org Subject: Re: [R] row selection Hi all, Thank you for your help. Now I am able to select every 5th row of the data from the main data set (x) using sub1<- x[seq(1, nrow(x), by=5), ] So sub1 contains one fith of the data set X. I want also create another data set that

Re: [R] row selection

2009-10-09 Thread Ashta
by=5), ] > > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf Of David Winsemius > Sent: Thursday, October 08, 2009 4:19 PM > To: Ashta > Cc: R help > Subject: Re: [R] row selection > > > On Oct 8, 2009

Re: [R] row selection

2009-10-08 Thread Khanh Nguyen
The problem is your loop condition. For example, when i reaches (n-3), a[i + 5, ] is out of bounds. -k On Thu, Oct 8, 2009 at 4:14 PM, Ashta wrote: > Hi all, > I have a matrix named x with N by C > I want to select every 5 th rrow from matrix x > I used the following code > n<- nrow(x) > >

Re: [R] row selection

2009-10-08 Thread David Winsemius
On Oct 8, 2009, at 4:18 PM, David Winsemius wrote: On Oct 8, 2009, at 4:14 PM, Ashta wrote: Hi all, I have a matrix named x with N by C I want to select every 5 th rrow from matrix x I used the following code n<- nrow(x) for(i in 1: n){ + b <- a[i+5,] b } Error: subscript out of bounds

Re: [R] row selection

2009-10-08 Thread Nutter, Benjamin
> x[seq(1, nrow(x), by=5), ] -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of David Winsemius Sent: Thursday, October 08, 2009 4:19 PM To: Ashta Cc: R help Subject: Re: [R] row selection On Oct 8, 2009, at 4:14 PM, Ashta wr

Re: [R] row selection

2009-10-08 Thread David Winsemius
On Oct 8, 2009, at 4:14 PM, Ashta wrote: Hi all, I have a matrix named x with N by C I want to select every 5 th rrow from matrix x I used the following code n<- nrow(x) for(i in 1: n){ + b <- a[i+5,] b } Error: subscript out of bounds What did you expect when "i" in your loop counter b

[R] row selection

2009-10-08 Thread Ashta
Hi all, I have a matrix named x with N by C I want to select every 5 th rrow from matrix x I used the following code n<- nrow(x) > for(i in 1: n){ + b <- a[i+5,] >b } Error: subscript out of bounds Can any body point out the problem? [[alternative HTML version deleted]] __