CODEWITHSUNDEEP
matlabplotoctave
user2574723
user2574723

Reputation: 225

Magnitude based colored points in Octave or MATLAB or in any other software

I have Z = f(x,y). I have discrete values of Z. I want to get a 2-D plot where the magnitude of Z is represented by the color of the points. The color should vary gradually as the magnitude of Z.

I prefer a Octave or MATLAB solution, but any other software is fine. Any help is much appreciated.

Upvotes: 0

Views: 312

Answers (3)

optimist
optimist

Reputation: 1018

Create a meshgrid with x and y as arrays:

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

Then use surf to get discrete colored plot with the z values controlling the intensities.

surf(X,Y,z)

Upvotes: 0

VHarisop
VHarisop

Reputation: 2826

You can use surf() along with view in MATLAB. Try this:

figure;
surf(Z);
view(2); % top-down view

You can also enable a color chart that shows color-value correspondence via the colorbar command.

Upvotes: 1

Rafael Monteiro
Rafael Monteiro

Reputation: 4549

One possible way is to use imagesc:

Example:

Z = rand(10);
imagesc(Z)

Upvotes: 3

Related Questions