Hi
my favourite would be
test$v[which(test$pattern==1)]-NA
Regards
Petr
Hi,
On Mar 1, 2012, at 12:38 PM, Sarah Goslee wrote:
Hi,
On Thu, Mar 1, 2012 at 11:11 AM, mails mails00...@gmail.com wrote:
Hello,
consider the following data.frame:
test - data.frame(n =
Hello,
consider the following data.frame:
test - data.frame(n = c(1,2,3,4,5), v = c(6,5,7,5,3), pattern =
c(1,1,NA,1,NA))
test
n v pattern
1 1 6 1
2 2 5 1
3 3 7 NA
4 4 5 1
5 5 3 NA
I tried to use apply and the adply function to set v to
Hi,
On Thu, Mar 1, 2012 at 11:11 AM, mails mails00...@gmail.com wrote:
Hello,
consider the following data.frame:
test - data.frame(n = c(1,2,3,4,5), v = c(6,5,7,5,3), pattern =
c(1,1,NA,1,NA))
test
n v pattern
1 1 6 1
2 2 5 1
3 3 7 NA
4 4 5
Your criteria did not make sense since in both cases pattern == 1, so
I chose to set to NA if pattern == 1
test - data.frame(n = c(1,2,3,4,5), v = c(6,5,7,5,3), pattern =
+ c(1,1,NA,1,NA))
test
n v pattern
1 1 6 1
2 2 5 1
3 3 7 NA
4 4 5 1
5 5 3 NA
# set v to NA
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-bounces@r-
project.org] On Behalf Of mails
Sent: Thursday, March 01, 2012 8:11 AM
To: r-help@r-project.org
Subject: [R] Delete rows from data.frame matching a certain criteria
Hello,
consider the following
Hi,
On Mar 1, 2012, at 12:38 PM, Sarah Goslee wrote:
Hi,
On Thu, Mar 1, 2012 at 11:11 AM, mails mails00...@gmail.com wrote:
Hello,
consider the following data.frame:
test - data.frame(n = c(1,2,3,4,5), v = c(6,5,7,5,3), pattern =
c(1,1,NA,1,NA))
snip
So basically the result
You're all correct: I copied in the wrong thing. My apologies!
On Thu, Mar 1, 2012 at 1:00 PM, Ista Zahn istaz...@gmail.com wrote:
Hi,
On Mar 1, 2012, at 12:38 PM, Sarah Goslee wrote:
Hi,
On Thu, Mar 1, 2012 at 11:11 AM, mails mails00...@gmail.com wrote:
Hello,
consider the following
On Mar 1, 2012, at 1:02 PM, Sarah Goslee wrote:
You're all correct: I copied in the wrong thing. My apologies!
On Thu, Mar 1, 2012 at 1:00 PM, Ista Zahn istaz...@gmail.com wrote:
Hi,
On Mar 1, 2012, at 12:38 PM, Sarah Goslee wrote:
Hi,
On Thu, Mar 1, 2012 at 11:11 AM, mails
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