Using FPLOT to plot a multi variable function
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Lets say I have function f= (x^3+y^3+z^3). For a constant y and z, I want to plot function 'f' between xmin<x<xmax using fplot. Is this possible?
采纳的回答
Walter Roberson
2014-2-6
f = @(x,y,z) x^3+y^3+z^3;
ycon = 5;
zcon = .34;
fun = @(x) f(x,ycon,zcon);
xmin = -4;
xmax = 6;
fplot(fun, [xmin, xmax])
5 个评论
Shima Khatiri
2017-8-24
What if y and z are not constant? how can we plot the general form?
Walter Roberson
2017-8-24
If x, y, and z are not constant, then you have three input variables and one output variable, and you would need a four-dimensional plot. There are no facilities in MATLAB to do four-dimensional plots.
Manuel Ruivo de Oliveira
2022-4-11
Your code gives me a plot, but also a warning:
"Warning: Function behaves unexpectedly on array inputs. To improve performance, properly vectorize your function to return an output with the same size and shape as the input arguments."
Is there an appropriate way to vectorize this?
Walter Roberson
2022-4-11
f = @(x,y,z) x.^3+y.^3+z.^3;
Manuel Ruivo de Oliveira
2022-4-11
Thanks, that works. I have a related question about plotting a function given as an integral depending on a parameter, but that seems to deserve it's own post so I'll start a new discussion.
更多回答（2 个）
Pratiksha Shinde
2020-8-7
0 个投票
How to find FFT of boost converter Boost converter
1 个评论
Walter Roberson
2020-8-8
You should ask that in a new Question.
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