Plotting a colored surface in 2D

Dear experts,

I have two vectors: x and y, and a function u(x,y) representing the temperature in the point (x,y). I want to see different temperatures as different colors, in the XY plane (see an example in the attached picture). i.e.- u will be given as color in the XY plane.

Will someone please help me understand what is the appropriate method to use in order to obtain such a plot?

Thanks in advance

Answer 1

[Azzi Abdelmalek]

Look at this example

x=1:0.1:4
y=1:0.1:4
[X,Y]=meshgrid(x,y)
Z=sin(X).^2+cos(Y).^2
surf(X,Y,Z)
view(2)

[Johnson]

Thanks a lot Azzi !

[Ahmad Asghar]

View(2) ignores the last row and col. Any idea how to avoid that? Appending a zero row and col is not working :)

Answer 2

[Abdullah Talib]

you can also use

imagesc(x,y,u); colormap jet; axis xy;

[yogendra jaiswara]

Nice

[Yinghui Hu]

it is a great help. Just what I would like to have!

Answer 3

[Vijendra Singh]

syms x y y=sin(x) ezplot(x,y)

Answer 4

[Gul Rahman Abdulrahimzai]

0 <= x <= 1

3 <= y <= 4

z=a(〖xy)〗^0.7 cos⁡(ax)

Create plot. Use function surf

a=input ('a = ');

[x,y]= meshgrid(0:0.1:1,3:3.5:4);

z = a*exp(x*y)^0.7*cos(x*a);

surf(x,y,z);

What is the problem with this model plz