[R] biplot.default

From: Jungyeon Yoon <june0821_at_email.unc.edu>
Date: Wed 19 Oct 2005 - 06:32:58 EST


Hi,

I've been trying to understand biplot. From getAnywhere(biplot.default), I could get the source code. However, there is one line that did make sense to me. It's the second line from the bottom.

arrow(0, 0, y[,1]*0.8, y[,2]*0.8, col = col[2],....)

I don't understand why there is a multiplication by 0.8 for y.

Thanks.



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