PCA and elliptical confidence

[morphmet_moderator]

----- Forwarded message from dan dkin -----

Date: Thu, 29 Nov 2012 06:19:37 -0500
From: dan dkin
Reply-To: dan dkin
Subject: PCA and elliptical confidence
To: morphmet@morphometrics.org

Hi,

When I run a PCA and applying elliptical confidence I can distinguish groups. The ellipses I get are in different radiuses and almost do not overlap. Therefore, except the difference of the groups does the ellipse shape tell something (e.g., variance in the groups, etc).

Any explanation, paper or etc will be welcome.

Thank

----- End forwarded message -----