2D colored plot

Question

Sander Ustrup 2020-4-20

评论： Sander Ustrup 2020-4-20

Hello everyone,

I'm looking to make a 2D plot, with coordinates (x,y), with colored dots according to a magnitude/strength z

I'm trying to recreate this following plot from the program homer energy Pro

So i'm thinking of the following,

z = randi(10,1,8760);
for x=1:7
    for y=1:24
        scatter3(x,y,z(x*y),'filled')
        hold on
    end
end
colorbar

From this i get:

So the problems im facing right now:

I want to make more of a line plot, so the whole plot is covered. Of course it will help when the x-axis becomes 365 wide,
How do i make the colorbar match the z-value?
Is scatterplot the best way to do what im trying to do? I've researched the documentation of plot3 and surf commands, but those require a function from what I've read.

Thank you in advance, any suggestions are welcome

Best regards,

Answer 1

KSSV 2020-4-20

z = randi(10,1,8760);
x=1:7
y=1:24
[X,Y] = meshgrid(x,y) ; 
Z = z(X.*Y) ; 
pcolor(X,Y,Z)
shading interp 
colorbar

Sander Ustrup 2020-4-20

Exactly what i was looking for, thank you!