how to make polar plot with N x M matrix

I have a matrix N x M where the r cordinate length is N and the theta cordinate length is M.

I am trying to make surfac polar plot with colour bar but I dont want it to be 3d plot.

I am having hard time doing it.

thank for the helpers!

a=2/3; %ft

h = 1e-3; %step

r = [0:h:a]; % r axis

theta = [0:h:2*pi]; % theta axis

N = length(r);

M = length(theta);

% also I have T matrix N x M calculated

Answer 1

[Bjorn Gustavsson]

You can have a look at these file-exchange contributions: pcolor-in-polar-coordinates, perfect-polar-plots, 3d-polar-plot.

Or you could (first step perhaps) do it with surf/pcolor:

[r2d,theta2d] = meshgrid(r,theta);
surf(r2d.*cos(theta2d),r2d.*sin(theta2d),YourMatrix)
shading flat % my personal preference

You might have to change order in and out of meshgrid or transpose YourMatrix.

HTH

[shuki firuz]

Thanks it was very helpful :)

how do I make the axis polar as well?

[Bjorn Gustavsson]

Good, happy that it helped.

In order to get the polar format axis I suggest you have a look at the file-exchange tools I linked to. Either to use as they are or to learn how they achieve that.

[shuki firuz]

I did and it was helpful

thank you