topic Re: PCA analysis visualisation in Statistical Procedures

PCA analysis visualisation

SASdevAnneMarie — Fri, 13 Feb 2026 21:14:50 GMT

Hello Experts,

I'm wondering how to show the PCA correlation circle in SAS.

Is it possible ? I can not use the proc iml for drawing the circle.

Thank you for your help !

Re: PCA analysis visualisation

StatDave — Sat, 14 Feb 2026 03:33:11 GMT

This can be done using the PLOTS= option in PROC PRINCOMP. See the Getting Started example in the PRINCOMP procedure documentation. The following extracts two principal components and produces the plot with variance circles at 50%, 75%, and 100%.

proc princomp data=Crime n=2 plots=pattern(circles=50 75 100);
   id State;
run;

Re: PCA analysis visualisation

Ksharp — Sat, 14 Feb 2026 03:24:55 GMT

1)Also could check @Rick_SAS blogs:

https://blogs.sas.com/content/iml/2019/11/06/what-are-biplots.html

https://blogs.sas.com/content/iml/2019/11/13/create-biplots-sas.html

https://blogs.sas.com/content/iml/2019/11/04/interpret-graphs-principal-components.html

2)The PRINQUAL Procedure

Re: PCA analysis visualisation

SASdevAnneMarie — Sat, 14 Feb 2026 16:53:19 GMT

Thank you, StatDave!