The plot shows the variation for each component and mypc$sdev gives you the
standard deviation.
If you want to know the variation, use mypc$sdev^2.
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Dimitri Liakhovitski
Sent: Donnerstag, 21. M?rz 2013 12:26
To: r-help
Subject: [R] values for the scree plot (package psych)
Hello,
I am using function princomp from the package psych.
I have my principle component object mypc:
mypc <- princomp(covmat=mycor)
plot(mypc) # shows me a screeplot
Question: how could I actually see the values displayed in the screeplot. I
don't mean on the graph - I just want to know the actual value for each
component (e.g., 10, 3.2, 1.8, etc.)
I need to know how much variance, in total, a certain number of comonents
explain.
Thanks a lot!
--
Dimitri Liakhovitski
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