remove specific number of rows from a matrix

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Hi,
Try:
f<-c(1,2)
?d[-seq_along(f),]
#???? a? b
#[1,] 3? 8
#[2,] 4? 9
#[3,] 5 10
A.K.




----- Original Message -----
From: Andras Farkas <motyocska at yahoo.com>
To: r-help at r-project.org
Cc: 
Sent: Wednesday, March 20, 2013 5:53 PM
Subject: [R] remove specific number of rows from a matrix

Dear All,
?
sorry, got stuck again on the following: let us say we have:
?
a <-c(1:5)
b <-c(6:10)
d <-cbind(a,b)
?
?
from d I would like to remove total number of rows based on the length of f. So if:
?
f <-c(1)
?
my result is working great with the following solution:
?
d[-length(f),]
?
so I get:? ?  a? b
[1,] 2? 7
[2,] 3? 8
[3,] 4? 9
[4,] 5 10?but if I do:?f <-c(1,2)?then I get:?? ?  a? b
[1,] 1? 6
[2,] 3? 8
[3,] 4? 9
[4,] 5 10?which tells us ideed, the code works well:-), but it is not what I need?Instead, I wanted to remove row #1 adn row#2 from the matrix to get:?[1,] 3? 8
[2,] 4? 9
[3,] 5 10 ?as the end result. Please provide your insights to solve this problem. ?Any input would be greatly appreciated,?thanks,?Andras
??? [[alternative HTML version deleted]]


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