MATLAB: How to plot for this figure

x = -10:1:10;
y = linspace(-10,10);
[X,Y] = meshgrid(x,y);
f = cos(2*pi*X).*cos(2*pi*Y);
surf(X,Y,f)

Best Answer

Define the ‘x’ and ‘y’ vectors differently, then reduce the number of cycles in each direction. The grid lines on the surfaces are more of a callenge.

Experiment with this:

x = linspace(-10,10);
y = linspace(-10,10);
[X,Y] = meshgrid(x,y);
f = cos(2*pi*X/6).*cos(2*pi*Y/6);
surf(X,Y,f, 'EdgeColor','none')
hold on
idxv = 1:4:numel(x);                                                                % Index Vector For Grid Lines Plot
surf(X(idxv,idxv), Y(idxv,idxv), f(idxv,idxv), 'FaceAlpha',0, 'LineWidth',1.5)
hold off

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MATLAB: Plotting the given Trigonometric functions

You can use fimplicit()

fun = @(x, y) y.*sin(2*x) - x.*cos(2*y);
fimplicit(fun, [-10 10 -10 10])

MATLAB: How to plot for this function

You forgot to use the variables you just created:

x = 0:100;
y = linspace(50,150,101);
[X,Y] = meshgrid(x,y);
f = cos((pi.*X)./50).*sin((pi.*Y)./100);
%            ^ not x, but X    ^ not y, but Y
surf(X,Y,f)

You should also avoid the habit of starting your code with clear all,close all,clc. Especially that first one should be avoided. During debugging you can use clear or clearvars to remove variables, otherwise use functions.

Best Answer

Related Solutions

MATLAB: Plotting the given Trigonometric functions

MATLAB: How to plot for this function

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