
Hi, Jim,

Thank you very much for your email.
 
Could you please explain more about the modification about how to adding this "pch=1,cex=0.2" to the following command line?
biplot(pca2,xlabs=rep(".",19000))

The R document seems to only take text input, whereas "pch=1,cex=0.2" are actually graphic parameters...


Also the question about "points on the biplot are not exactly the same as the predicted values" I asked in my previous post, I meant that when I checked the coordinates on the biplot, they are not matching to the pc1 and pc2 values in the predicted output I got from the following command

predict(pca2, originalData, ...)

Capricy


________________________________
 From: Jim Lemon <jim@bitwrit.com.au>

Cc: "r-help@r-project.org" <r-help@r-project.org> 
Sent: Wednesday, May 1, 2013 5:33 AM
Subject: Re: [R] still about biplot for principal componens analysis


On 05/01/2013 02:46 AM, capricy gao wrote:
> I noticed that the points on the biplot are not exactly the same as the predicted values.
>
> Could any body give me a  hint about why?
>
Hi capricy,
If you mean the points that would result from the suggestion I sent 
yesterday, it is probably because using the period (".") character 
places the dots a bit lower than the actual values. Try using:

pch=1,cex=0.2

Jim
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