[R] centroid based ellipse

Lumila Menéndez lumilam at gmail.com
Tue Oct 30 20:57:34 CET 2012

After performing a pca of morphometric variables and a scatterplot of
the first 2 principal components, using the package latticeExtra, I
tried to draw the ellipses representing one sigma from the centroid
for each sample, but the function panel.ellipse draws the ellipses
around 95% of the sample.
Does anyone know a function to draw a centroid based ellipse?

Lumila Paula Menéndez
Licenciada en Antropología
División Antropología-Museo de La Plata.
Universidad Nacional de La Plata.

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