MATLAB: Help making a 2D color plot

2d plotgraphgraphingmath

I have 3, 10 x 1 arrays. The first array is the x-position. The second array is the y-position. The third array is the indent depths as a function of the x and y positions. I want to create a 2D color plot with an X and Y axis and then the Z axis would be the different colors along the area of the x, y surface. Is there a way to do something like this? I want for different colors to represent different indent depths. I dont want this to be a 3D plot.

Thank you.

Best Answer

Your problem statement appears to have eliminated most solutions.

Try this:

x = rand(10,1);
y = rand(10,1);
z = rand(10,1);
xv = linspace(min(x), max(x), numel(x));
yv = linspace(min(y), max(y), numel(y));
[X,Y] = ndgrid(xv, yv);
Z = griddata(x, y, z, X, Y);
figure
surf(X, Y, Z)
view(0,90)
% view(90,0)

It creates a 3D surface, then orients it with view to create a 2D plot.

Related Solutions

MATLAB: Removing Z-Axis in 3D plot(plot3)

Try this:

x = randn(1, 100);                          % Create Data


y = randn(1, 100);                          % Create Data
z = randn(1, 100);                          % Create Data
figure
plot3(x, y, z)
Ax = gca;
Ax.ZAxis.Visible = 'off';
Ax.ZGrid = 'off';
Ax.Color = 'none';

Use your own data.

MATLAB: How to plot Contour Plot

I assume your variables are vectors. If they are gridded, it is only necessary to use the reshape function to form them into matrices.

If they are not gridded, something like this will work:

x = rand(20, 1);
y = rand(20, 1);
z = rand(20, 1);
xv = linspace(min(x), max(x), 50);
yv = linspace(min(y), max(y), 50);
[X,Y] = ndgrid(xv, yv);
Z = griddata(x, y, z, X, Y);
figure
contourf(X, Y, Z)

Experiment to get the result you want.

Best Answer

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MATLAB: Removing Z-Axis in 3D plot(plot3)

MATLAB: How to plot Contour Plot

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