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Need help graphing a surface!

1 次查看（过去 30 天）
A
A 2014-2-5
关闭： MATLAB Answer Bot 2021-8-20
Hi,
I am graphing x, y, z equations into surfaces. I am currently doing this in Excel. However, in Excel, I have to use 'matrices' with defined values. How can I graph an equation like this...
x = y + z
...without needing to have defined values/matrices.
How can I do this? Should I stick to Excel? move to MatLab? or is there a better application out there to do this?
Thanks

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回答（3 个）

Mischa Kim
Mischa Kim 2014-2-5
MATLAB is your tool. Try
[x,y] = meshgrid(0:.1:10);
z = x - y;
mesh(z);
box
mesh is only one of several options you can use to plot data in 3D.
  1 个评论
Walter Roberson
Walter Roberson 2014-2-5
That requires that matrices be defined, which "A" wants to avoid.
Walter Roberson
Walter Roberson 2014-2-5
Depending on your equation forms, you might be able to use MATLAB's explot()
A
A 2014-2-5
I'll check it out. Here's another question:
How can I superimpose multiple equations onto one plot creating this 'mixed' surface?

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