On Oct 9, 2009, at 12:41 PM, Ashta wrote:
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 will contain the remaining data set from X (ie., four
fifth
of the data set).
sub1<- x[-seq(1, nrow(x), by=5), ]
Any help is highly appreciated.
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
}
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 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 became one greater
than the number of rows?
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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