[R] Factor Analysis Biplot

From: Brett Stansfield <brett_at_hbrc.govt.nz>
Date: Fri 15 Apr 2005 - 10:44:37 EST


Dear R help

I am having difficulty doing a biplot of the first two factors of a factor analysis. I presume it is because the values in factor 2 for Milk and NUTS are not displayed in the component loadings.

Loadings:

          Factor1 Factor2

RedMeat    0.561  -0.112 
WhiteMeat  0.593  -0.432 
Eggs       0.839  -0.195 
Milk       0.679         
Fish       0.300   0.951 
Cereals   -0.902  -0.267 
Starch     0.542   0.253 
Nuts      -0.760         
Fr.Veg    -0.145   0.325

It has no problem doing a normal plot using plot(eurofood.fa$scores[,1], eurofood.fa$scores[,2])

But when I ask for a biplot I get

biplot(eurofood.fa$scores[,1], eurofood.fa$scores[,2]) Error in 1:n : NA/NaN argument

What can I do to overcome this??
Brett Stansfield



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