[R] RE: adding perspectives to existing persp plots

[Corey Bradshaw]

Thanks, Romain. I've certainly used that to draw lines and points in the plots produced by 'persp'; however, my problem is that I need to incorporate an entirely new z function (not just a plane) onto the same plot (i.e., using the same x and y values).

Corey

-----Original Message-----
From: francoisromain at free.fr [mailto:francoisromain at free.fr] 
Sent: Wednesday, December 15, 2004 4:30 PM
To: Corey Bradshaw
Cc: R-help at stat.math.ethz.ch
Subject: 


Hello,

Just look at the examples in ?persp.
There is a function called trans3d defined in it that will traduce your 3D
coordinates to 2D, and so you will be able to draw lines with lines function.

Romain.

Corey Bradshaw a écrit :

>I've created a perspective plot using 'persp' in the graphics package.
>I'd like to add a second plane of z values to the existing plot, but I
>cannot seem to do this using 'persp'. Is there an analogue to 'lines' or
>'points' for perspectives?
>
>Corey.
>corey.bradshaw at cdu.edu.au
>
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Romain FRANCOIS : francoisromain at free.fr
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