Last active
February 11, 2019 09:18
-
-
Save mttmantovani/30d448a9b2f48eecde40813ba5052396 to your computer and use it in GitHub Desktop.
2dplot example - MATLAB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
% 2D PLOT EXAMPLE | |
% Make grid and data | |
x = linspace(-5, 5, 151); | |
y = linspace(-3, 3, 251); | |
[X, Y] = meshgrid(x, y); | |
Z = sin(X.*Y).^2 - cos(X.*Y).^2 - X - Y; | |
% Save the data in a readable format to use later | |
coords = [X(:), Y(:)]; | |
data = [coords, Z(:)]; | |
dlmwrite('example.dat', data, 'precision', 5); | |
% Plotting | |
% METHOD 1 | |
figure(1) | |
P1 = pcolor(x, y, Z); | |
box on | |
shading interp | |
set(P1,'edgecolor','none'); | |
colorbar | |
% METHOD 2 | |
figure(2) | |
P2 = surf(x, y, Z); | |
shading interp | |
view(0,90); | |
colorbar | |
% If you want to load data in format X,Y,Z from somewhere and redo the plot | |
% (data mast be sampled on a grid) | |
loaded_data = importdata('example.dat', ',', 0); | |
Xl = unique(loaded_data(:,1)); | |
Yl = unique(loaded_data(:,2)); | |
Zl = reshape(loaded_data(:,3), [length(Yl), length(Xl)]); | |
figure(3) | |
P3 = pcolor(Xl, Yl, Zl); | |
box on | |
shading interp | |
set(P3,'edgecolor','none'); | |
colorbar | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment