Dear forum,
I need to create biplot graphic. I took a look at the code of the
biplot.default function from the stats package and I found that the arrows for
the variables are multiplied by a coefficient of 0.8 before plotting:
...
if (var.axes)
arrows(0, 0, y[, 1L] * 0.8, y[, 2L] * 0.8, col = col[2L],
length = arrow.len)
...
I have no idea why this is done. Could somebody clarify?
Thank you in advance.
Regards,
Martin
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