[R] set.cor/mat.regress

Andrea Lamont alamont082 at gmail.com
Thu Jan 8 01:19:11 CET 2015

I am having a problem with the function mat.regress in the psych package
that I was hoping someone would be able to give guidance on.

I have a correlation matrix that is [76,76] with the first column
representing the Y variable, the rest are the Xs. This is what my data
looks like:


mdat <- matrix(m, nrow = 76, ncol = 76, byrow = TRUE)

diag(mdat) <- 1

I am trying to obtain beta weights/regression coefficients from this
correlation matrix.

When I run:

set.cor(y=1, x=c(2:76),data=mdat)

or mat.regrss(y=1, x=c(2:76),data=mdat)

I get odd errors.  Most recently:

 set.cor(y=1, x=c(2:76),data=mdat) yields

Error in array(x, c(length(x), 1L), if (!is.null(names(x))) list(names(x),

  'data' must be of a vector type, was 'NULL'

I have tried converting my matrix to a vector (as.vector). Still got
errors. Another common error I am getting is that the subscript not being
bound. I tried other options like square=FALSE to no avail.

It seems like such a straightforward function, I'm not sure what I'm doing

Any help is appreciated.



Andrea Lamont, PhD
Post-Doctoral Fellow
University of South Carolina
Columbia, SC 29208

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