How to plot Heat in 3D cartesian plane.

I have a 3D cartesian space. And I have a variable with respect to (x,y,z) say for ex. heat in a particular point. How do I show the variation using matlab?

[John D'Errico]

So you have a 4 variable problem. You need to buy one of the new 4-dimensional holographic monitors. They are not cheap, but well worth the price. Mine is down for repairs, waiting on parts from StarFleet command. Inter-galactic shipping can be so slow.

Or, you can use tools like isosurface, essentially a level surface like a contour plot. My preference is the holographic monitor. Now if those parts would just arrive.

[Sankararaman K]

Hey John, firstly I thank you for your quick response but I think I found something that's usefull. Surf with the colormap could do the trick as I wanted to show the variation of heat within a cube.

https://in.mathworks.com/help/matlab/ref/surf.html#bvgs7ws-1

[Ali Daher]

how did you convert the z and color vectors into matrices (as required by the surf function?)

Answer 1

[KSSV]

Let (x,y,z) be your data.

m = 100; n = 100 ;
xi = linspace(min(x),max(x),m) ; 
yi = linspace(min(y),max(y),n) ; 
[X,Y] = meshgrid(xi,yi) ; 
Z = griddata(x,y,z,X,Y) ;
figure
pcolor(X,Y,Z) ; shading interp ; colorbar
figure
surf(X,Y,Z) ; shading interp ; colorbar