how can i make graph i n which first i want function f(x,y) from user by input command but then i HAVE TO PLOT THAT FUNCTION f(x,y) 3D plot.

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SYED
SYED 2024-4-5
评论： Cris LaPierre 2024-4-5
how can i make graph i n which first i want function f(x,y) from user by input command but then i HAVE TO PLOT THAT FUNCTION f(x,y) 3D plot. I first convert the function in to inline function using inlne command then i don,t know how to plot 3d graph. because one error always showing conversion from inline to double is not possible
clear
clc
syms x y
a=input('Enter function f(x,y) = ');
b=inline(a);
x=[-2:0.1:2];
y=[-2:0.1:2];
[X,Y]=meshgrid(x,y)
x=X;
y=Y;
z=a;
mesh(z)
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Cris LaPierre
Cris LaPierre 2024-4-5
编辑：Cris LaPierre 2024-4-5
Ran in:
I think you are not using inline correctly. You likely need to use the following syntax.
There are many types of 3D plots. Since you haven't specified what type of 3D plot you want, here's an example using surf (surface example taken from here)
F = inline('Y.*sin(X) - X.*cos(Y)','X','Y');
[X,Y] = meshgrid(-5:.5:5);
Z = F(X,Y);
surf(X,Y,Z)

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