probably you want to look at:
?any
?all
I hope it helps.
Best,
Dimitris
----
Dimitris Rizopoulos
Biostatistical Centre
School of Public Health
Catholic University of Leuven
Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
http://www.student.kuleuven.be/~m0390867/dimitris.htm
----- Original Message -----
From: "Karin Lagesen" <[EMAIL PROTECTED]>
To: <r-help@r-project.org>
Sent: Thursday, June 05, 2008 12:38 PM
Subject: [R] vector comparison
I know this is fairly basic, but I must have somehow missed it in
the
manuals.
I have two vectors, often of unequal length. I would like to compare
them for identity. Order of elements do not matter, but they should
contain the same.
I.e: I want this kind of comparison:
if (1==1) show("yes") else show("blah")
[1] "yes"
if (1==2) show("yes") else show("blah")
[1] "blah"
Only replace the numbers with for instance the vectors
a = c("a")
b = c("b","c")
c = c("c","b")
Now, I realize I only get a warning when comparing things, but this
to
me means that I am not doing it correctly:
if (a==a) show("yes") else show("blah")
[1] "yes"
if (a==b) show("yes") else show("blah")
[1] "blah"
Warning message:
In if (a == b) show("yes") else show("blah") :
the condition has length > 1 and only the first element will be
used
if (b == c) show("yes") else show("blah")
[1] "blah"
Warning message:
In if (b == c) show("yes") else show("blah") :
the condition has length > 1 and only the first element will be
used
I have also tried the %in% comparator, but that one throws warnings
too:
if (b %in% c) show("yes") else show("blah")
[1] "yes"
Warning message:
In if (b %in% c) show("yes") else show("blah") :
the condition has length > 1 and only the first element will be
used
if (c %in% c) show("yes") else show("blah")
[1] "yes"
Warning message:
In if (c %in% c) show("yes") else show("blah") :
the condition has length > 1 and only the first element will be
used
So, how is this really supposed to be done?
Thanks!
Karin
______________________________________________
R-help@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.
Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
______________________________________________
R-help@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.
