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Factor Analysis/Inputting Correlation Matrix
2 messages · Matt Stati, Joshua Wiley
Hi Matt,
Did you try reading the documentation for factanal()? You can pull it
up by typing: help("factanal")
These give basically identical results using the raw data, the
covariance matrix, and the correlation matrix.
factanal(x = mtcars, factors = 3)
factanal(factors = 3, covmat = cov(mtcars))
factanal(factors = 3, covmat = cor(mtcars))
all of which is clearly, explained if you read the details for the
argument "covmat" in the help.
Cheers,
Josh
On Sat, Jun 11, 2011 at 3:06 PM, Matt Stati <mattstati at yahoo.com> wrote:
Can someone please direct me to how to run a factor analysis in R by first inputting a correlation matrix? Does the function "factanal" allow one to read a correlation matrix instead of data vectors? Thanks, Matt. ? ? ? ?[[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.
Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.com/