how to plot graph with color for xy vs z?

I want to plot a graph showing me XY values for perticulur Z value

i want z as a colour

so i will get the data as XY for pertuculur Z

[Adam Danz]

heatmap

https://www.mathworks.com/help/matlab/ref/heatmap.html

imagesc

https://www.mathworks.com/help/matlab/ref/imagesc.html

contourf

https://www.mathworks.com/help/matlab/ref/contourf.html

scatter

https://www.mathworks.com/help/matlab/ref/scatter.html

and more.....

Answer 1

[Michael Madelaire]

I think you are looking for a scatterplot.

clear all; close all; clc;

x = rand(100,1);
y = rand(100,1);
z = rand(100,1);

figure();
scatter(x,y,20,z);
xlabel('x');
ylabel('y');
c = colorbar;
c.Label.String = 'z';
grid on;

[Ruthvik sainath meka]

i want to get a plot like this

i have data

i want a plot x,y as drain voltage, gate voltage and z as current

x,y and z should give the colour so that i can understand from the intensty graph that for a perticolour x,y this current is there

[Michael Madelaire]

This should do it.

clear all; close all; clc;

x = rand(100, 1);
y = rand(100, 1);
z = rand(100, 1);

[xx, yy] = meshgrid(x, y);
zz = griddata(x, y, z, xx, yy);

figure()
[~, h] = contourf(xx,yy,zz,10);
set(h,  'LineColor', 'none');
xlabel('x');
ylabel('y');
c = colorbar;
c.Label.String = 'z';