[R] How to get multiple Correlation Coefficients
Hi
I have used a polycor package for categorical correlation coefficients.
I run the following script. But there were no results.
Could you tell me how to correct the script?
Thanks in advance,
vars - names(sdi)
for (i in 1:length(vars)) {
for (j in 1:length(vars)) {
paste(vars[i], and , vars[j])
polychor(vars[i], vars[j])
# corr
}
}
--
Kum-Hoe Hwang, Ph.D.Phone : 82-31-250-3516Email : [EMAIL PROTECTED]
__
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Re: [R] How to get multiple Correlation Coefficients
Oh, and of course you need to use an explicit print inside a for loop.
So, the line would be:
print( polychor(sdi[,i], sdi[,j]))
On 19/10/06, David Barron [EMAIL PROTECTED] wrote:
The problem is that in the expression polychor(vars[i], vars[j]),
vars[i] and vars[j] refer to the names of the variables, not the
variables themselves. So, use sdi[,i] and sdi[,j] instead.
On 19/10/06, Kum-Hoe Hwang [EMAIL PROTECTED] wrote:
Hi
I have used a polycor package for categorical correlation coefficients.
I run the following script. But there were no results.
Could you tell me how to correct the script?
Thanks in advance,
vars - names(sdi)
for (i in 1:length(vars)) {
for (j in 1:length(vars)) {
paste(vars[i], and , vars[j])
polychor(vars[i], vars[j])
# corr
}
}
--
Kum-Hoe Hwang, Ph.D.Phone : 82-31-250-3516Email : [EMAIL PROTECTED]
__
R-help@stat.math.ethz.ch 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.
--
=
David Barron
Said Business School
University of Oxford
Park End Street
Oxford OX1 1HP
--
=
David Barron
Said Business School
University of Oxford
Park End Street
Oxford OX1 1HP
__
R-help@stat.math.ethz.ch 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.
Re: [R] How to get multiple Correlation Coefficients
The problem is that in the expression polychor(vars[i], vars[j]),
vars[i] and vars[j] refer to the names of the variables, not the
variables themselves. So, use sdi[,i] and sdi[,j] instead.
On 19/10/06, Kum-Hoe Hwang [EMAIL PROTECTED] wrote:
Hi
I have used a polycor package for categorical correlation coefficients.
I run the following script. But there were no results.
Could you tell me how to correct the script?
Thanks in advance,
vars - names(sdi)
for (i in 1:length(vars)) {
for (j in 1:length(vars)) {
paste(vars[i], and , vars[j])
polychor(vars[i], vars[j])
# corr
}
}
--
Kum-Hoe Hwang, Ph.D.Phone : 82-31-250-3516Email : [EMAIL PROTECTED]
__
R-help@stat.math.ethz.ch 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.
--
=
David Barron
Said Business School
University of Oxford
Park End Street
Oxford OX1 1HP
__
R-help@stat.math.ethz.ch 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.
Re: [R] How to get multiple Correlation Coefficients
Dear David and Kum-Hoe Hwang,
David has pointed out to me that polychor() will incorrectly return a
polychoric correlation when its arguments are length-one character vectors:
polychor(a, b)
[1] 0.1055909
Actually, the problem is more general, since polychor() will erroneously
compute a polychoric correlation in any event when the contingency table for
the data contains only one cell:
polychor(1, 2)
[1] 0.1055909
polychor(rep(a, 100), rep(b, 100))
[1] 0.1055909
I've fixed this bug so that polychor() and polyserial() report an error when
a categorical variable has just one level. I'll upload the new version of
the package to CRAN shortly.
Regards,
John
John Fox
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of David Barron
Sent: Thursday, October 19, 2006 5:54 AM
To: Kum-Hoe Hwang; r-help
Subject: Re: [R] How to get multiple Correlation Coefficients
The problem is that in the expression polychor(vars[i],
vars[j]), vars[i] and vars[j] refer to the names of the
variables, not the variables themselves. So, use sdi[,i] and
sdi[,j] instead.
On 19/10/06, Kum-Hoe Hwang [EMAIL PROTECTED] wrote:
Hi
I have used a polycor package for categorical correlation
coefficients.
I run the following script. But there were no results.
Could you tell me how to correct the script?
Thanks in advance,
vars - names(sdi)
for (i in 1:length(vars)) {
for (j in 1:length(vars)) {
paste(vars[i], and , vars[j])
polychor(vars[i], vars[j])
# corr
}
}
--
Kum-Hoe Hwang, Ph.D.Phone : 82-31-250-3516Email : [EMAIL PROTECTED]
__
R-help@stat.math.ethz.ch 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.
--
=
David Barron
Said Business School
University of Oxford
Park End Street
Oxford OX1 1HP
__
R-help@stat.math.ethz.ch 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.
__
R-help@stat.math.ethz.ch 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.
