How to from my vector coordinate to fit my meshgrid matrix?

Hi,

I created a meshgrid x, y, which is an matrix of (25, 5) in sixe. Then I rearranged this to

r = [ x(:) y (:) ]

with size (125, 1).

For each 125 rows I calculated an intensity.

Now I am trying to plot the intensity as a 2D image, but since the intensity vector is in size (125,1) I am not sure how to do this so the int vector corresponds to my grid x and y.

'surf' and 'image' seems to need a grid.

is there a way to quickly reform my int vector back to fit my matrix version of the grid?

I should probably mention I have cylindrical coordinates.

[r1, phi1] = meshgrid(1:1:5, 0:((2*pi)/48):(2*pi)); 
gX1 = r1.*cos(phi1);
gY1 = r1.*sin(phi1);
r = [gX1(:) gY1(:)];

Answer 1

[Simon]

Hi!

Your looking for the "reshape" function to reshape your intensity "I":

Imatrix = reshape(I, 25, 5)