Message-ID: <4B58BAB6.8030602@stats.uwo.ca>
Date: 2010-01-21T20:36:06Z
From: Duncan Murdoch
Subject: 3d trend line
In-Reply-To: <1264102999849-1053686.post@n4.nabble.com>
On 21/01/2010 2:43 PM, mlcarte3 wrote:
> I have a 3d scatter plot and I need to add a trend line. I can add a
> regression plane, but I need a line, not a plane.
>
Which line do you want? There's more than one choice. For example, you
could regress y and z on x, or you could find the principle axis of the
x, y, z point cloud.
Duncan Murdoch