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vertical plane in plot3D

• To: mathgroup at smc.vnet.net
• Subject: [mg113140] vertical plane in plot3D
• From: Greg Colbourn <gcolbourn at hotmail.com>
• Date: Fri, 15 Oct 2010 13:50:19 -0400 (EDT)

Hi,
Sorry for the basic question. But I'm having trouble plotting a vertical pl=
ane in Plot3D. I've got a surface graph, but I want to overlay an transpa=
rent plane at a set value on the x axis. So, I want to plot x=80 for al=
l y and z.
Plot3D[x = 80, {x, 0, 100}, {y, 0, 100}]
just gives me z=80 for all x and y (i.e. a horizontal plane)
Cheers,Greg 		 	   		  =