topic Re: 95% confidence ellipse in a PCA biplot in Discussions

95% confidence ellipse in a PCA biplot

vtrbrn25 — Fri, 13 Sep 2024 15:13:07 GMT

Hello, everyone.

I'm currently conducting a PCA biplot analysis and would like to add a 95% confidence ellipse for each of the three groups I'm analyzing. While I know this is possible in other software like R, I'm unsure how to achieve this in JMP Pro 17. Could someone help me?

I attached two figures, an exemple of a 95% confidence ellipse that I want to do and my PCA biplot.

Re: 95% confidence ellipse in a PCA biplot

Chris_Kirchberg — Fri, 13 Sep 2024 16:05:19 GMT

Hi @vtrbrn25 ,

Have you tried using Scatterplot 3D under Graph menu? There are options in the red triangle that allow PCA and to show a confidence ellipse.

https://www.jmp.com/support/help/en/18.1/#page/jmp/scatterplot-3d.shtml%23

Best,