[R] Quick question about princomp/biplot

[Filoche]

Hi everyone. 

I performing a simple PCA using the princomp function. Then, I use the
biplot function to show it. However, the function use line number to
represent samples. I would like to know if there's a way to use a dot
(point) instead of the line number when using the biplot function.

With regards,
Phil

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