R help - Jan 2010 - 3d trend line

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.

Thanks.
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Hi mlcarte3 (it is you?)

?contour

Try algo google R graph gallery

bests

milton

On Thu, Jan 21, 2010 at 2:43 PM, mlcarte3 <mlcarte3@ncsu.edu> 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.
>
> Thanks.
> --
> View this message in context:
> http://n4.nabble.com/3d-trend-line-tp1053686p1053686.html
> Sent from the R help mailing list archive at Nabble.com.
>
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> and provide commented, minimal, self-contained, reproducible code.
>
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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