how to extract Pixels from particular axes?

Hi , I have imge, i converted to DKL space, then I used plot3 function to plot the image in a 3d axis (x,y,z). The image is in dKL space, so Z axis will be luminance value, y axis will be values from blue color, and x axis will hve pixel values from red & green . Now I want to work on histogram that has pixels only from the x axis. How do I proceed with it ?

I am attaching my code here.

[KALYAN ACHARJYA]

Pictorial representation is easier to understand. What does you refereing pixels in the figure window?

[Malini Bakthavatchalam]

Hi Acharjya, I want to extract the values from x axis only (LM). this 3D plot is using it rotation around z axis, But i want the values from the LM axis, I want to see how the image looks like if I extract only from the x axis, Pixels i meant the points here.

[Malini Bakthavatchalam]

Hi I actually was confused , now I am cleared with it . Thanks