Help making a 2D color plot

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.

Answer 1

[Star Strider]

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.

[birdnerd007]

@Star Strider - Thanks for your reply. This seems to be in the right direction....

Perhaps I explained it incorrectly, my apologies. There are 10 tests that happened. Each test represents and indent at a specific depth that took place at a certain x,y position. There is only 1 solution for each indent and I want to be able to represent by color the depth associated with that test. I don't know if that makes sense? The data is discrete.

[Star Strider]

My pleasure!

The scatter function may be more appropriate (assuming that I unserstand what you want):

x = rand(10,1);
y = rand(10,1);
z = rand(10,1);

figure
scatter(x, y, [], z, 'filled')
grid

Here, the ‘z’ value assigns the colour. (The third scatter argument sets the marker size. I set it to use the default value by passing the empty array [] in that position.) Experiment with different expressions for the colour argument to get the result you want.

[birdnerd007]

Perfect! Thanks a million!

[Star Strider]

As always, my pleasure!