r - Getting factor analysis scores when using the factanal function -

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i have used factanal function in r factor analysis on data set.

viewing summary of output, see have access loading , other objects, interested in scores of factor analysis.

how can scores when using factanal function?

i attempted calculate scores myself:

m <- t(as.matrix(factor$loadings)) n <- (as.matrix(dataset)) scores <- m%*%n

and got error:

error in m %*% n : non-conformable arrays

which i'm not sure why, since double checked dimension of data , dimensionality in agreement.

thanks help.

ah. 

factormodel$loadings[,1] %*% t(dataset)

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