Matlab Error (Z must be a matrix, not a scalar or vector.)?

Hello

I was trying to plot using the following code but i get this error. Can someone help me please? Thank You

x = -2.5:.1:2.5;

y = -2.5:.1:2.5;

[X,Y] = meshgrid(x,y);

z = 2*sin(x.*y);

mesh(x,y,z)

grid on

hold on

Error using mesh (line 76) Z must be a matrix, not a scalar or vector.

Answer 1

[George Papazafeiropoulos]

Is this what you want?

x = -2.5:.1:2.5;

y = -2.5:.1:2.5;

[X,Y] = meshgrid(x,y);

Z = 2*sin(X.*Y);

mesh(X,Y,Z)

grid on

hold on

George Papazafeiropoulos

[GURPREET]

Thank you man.

[Miro]

lol you stole my reputation :)

[Kolenchenko]

THNK U

Answer 2

[Miro]

ah you mixed up the capitals i guess. use ur meshgrid for your z like

z = 2*sin(X.*Y);

mesh(X,Y,z)

Answer 3

[shahariar Ryehan]

I got the same error. Please help.

%variable declare

syms x;

syms t;

%putting the value

a=1;

b=-2;

c=-1;

alpha=1;

y=0;

%vartheta equation

vartheta = @(x, t)((a/alpha)*x.^alpha)+((b/alpha)*y^alpha)+c*t;

%delta

delta=-(2*c)/(b*a^2);

%mesh plot

x = -3:.1:3;

y = -3:.1:3;

[X,Y] = meshgrid(x,t);

%main function

Z=@(vartheta,delta)(-(2*(c^2)*((tanh(sqrt(-delta).*vartheta)).^2))/(b*delta*a^3));

mesh(X,Y,Z)

grid on

hold on

Result:

Error using surf (line 71)

Z must be a matrix, not a scalar or vector.

Error in M3_1_29_3 (line 30)

surf(v, 'edgecolor', 'none')