3D APP, How to plot y=0
05-29-2019, 05:30 PM
Post: #1
 Tonig00 Junior Member Posts: 24 Joined: May 2016
3D APP, How to plot y=0
Hello
I want to plot a parallel plane to ZX plane (Y= 1, ...) or to ZY plane (X= 1, ...).
Just to see the intersection with a surphace like FZ1= X^2 + Y^2

Could you give me some help?

Thanks

Toni
05-29-2019, 07:06 PM
Post: #2 Han Senior Member Posts: 1,810 Joined: Dec 2013
RE: 3D APP, How to plot y=0
Since $$y=0$$ is not an equation that can be represented by a function (of $$x$$ and $$y$$ ), you will not be able to graph such a surface.

Graph 3D | QPI | SolveSys
05-29-2019, 10:20 PM (This post was last modified: 05-29-2019 11:27 PM by Voldemar.)
Post: #3
 Voldemar Member Posts: 204 Joined: Mar 2014
RE: 3D APP, How to plot y=0
Try this:
FZ1(X,Y) = -Y/(1E-499) 05-29-2019, 11:15 PM
Post: #4
 thenozone Junior Member Posts: 10 Joined: Mar 2017
RE: 3D APP, How to plot y=0
Good trick;
and FZ(X,Y)=(Y-2)/(1E-499)

for Y=2 Etc Etc.
05-29-2019, 11:24 PM
Post: #5
 Voldemar Member Posts: 204 Joined: Mar 2014
RE: 3D APP, How to plot y=0
Equation of plane is
ax + by + cz + d = 0
Need plane
y = 0
0x + 1y + 0z +0 = 0
0z = -y
z = -y/0
Replace zero with 1E-499
05-30-2019, 12:41 AM
Post: #6
 Tonig00 Junior Member Posts: 24 Joined: May 2016
RE: 3D APP, How to plot y=0
It works. Very nice.
Thanks very much to all

Toni
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