How to find the intensity of this image..?

In this picture, how can I find the intensity plot (x axis: distance from the center of the cell, and y axis: intensity)? I should find the intensity plot, and the starting point should be the center of the cell, which is in the approximate center, and the ending point should be the end of the image (wherever it is - it can be the right or left or top or bottom side - it doesn't matter) In addition, how should I find the average intensity plot (the average of every intensity line from the center of the cell to the ending points - every ending point) Thank you for helping :)

[Walter Roberson]

I think you intended to attach an image?

[David Hong]

Yeah,, I forgot. I attached it!

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/images/ref/radon.html