Hello I am struggling to accomplice an idea which is as follows:
I have a vector say: a <- c("a", "b", "c",
"a") and another: b <- c("m",
"n", "o", "m"). Length of those 2 vectors are
essentially be same. Here task
is to check the duplicates in the vector 'a' and then to check whether
any
duplicates are there in the same places of 'b'. If not, flag a FALSE.
I above example, it is correct hence TRUE. However in general how can I
implement this?
Can somebody please help me?
Thanks,
[[alternative HTML version deleted]]
?duplicated
This will identify common locations where duplications occur:
duplicated(a) & duplicated(b)
Ravi.
-------------------------------------------------------
Ravi Varadhan, Ph.D.
Assistant Professor,
Division of Geriatric Medicine and Gerontology School of Medicine Johns
Hopkins University
Ph. (410) 502-2619
email: rvaradhan at jhmi.edu
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On
Behalf Of Nipesh Bajaj
Sent: Wednesday, February 09, 2011 10:12 AM
To: r-help at r-project.org
Subject: [R] A question on Duplicating
Hello I am struggling to accomplice an idea which is as follows:
I have a vector say: a <- c("a", "b", "c",
"a") and another: b <- c("m",
"n", "o", "m"). Length of those 2 vectors are
essentially be same. Here task
is to check the duplicates in the vector 'a' and then to check whether
any
duplicates are there in the same places of 'b'. If not, flag a FALSE.
I above example, it is correct hence TRUE. However in general how can I
implement this?
Can somebody please help me?
Thanks,
[[alternative HTML version deleted]]
______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
ab = paste(a,b,sep=";~;~;~")
flag = length(ab)==length(unique(ab))
This should work unless you use 3 consecutive winking elephants in other places
in your program.
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Nipesh Bajaj
Sent: Wednesday, February 09, 2011 10:12 AM
To: r-help at r-project.org
Subject: [R] A question on Duplicating
Hello I am struggling to accomplice an idea which is as follows:
I have a vector say: a <- c("a", "b", "c",
"a") and another: b <- c("m",
"n", "o", "m"). Length of those 2 vectors are
essentially be same. Here task
is to check the duplicates in the vector 'a' and then to check whether
any
duplicates are there in the same places of 'b'. If not, flag a FALSE.
I above example, it is correct hence TRUE. However in general how can I
implement this?
Can somebody please help me?
Thanks,
[[alternative HTML version deleted]]
______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
message may contain confidential information. If you are not the designated
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