using improfile in 2D image.

I want to make a graph, which has x-axis, y-axis are size of a image and z-axis is intensity of that pixel, from a black-white image. The image is a just gradation dot(darkest at center).

L = size(my_img);
x = [1:L(1)];
y = [1:L(2)];
improfile(my_img, x, y)

I tried upper one. It shows graph from (1,1) to (end,end). And it is not I wanted. I want to get a cone shape graph. How can I get that??

[KAE]

With the image file, it is hard to help with this question. It is not clear where a cone is in an image that is not shown.

Answer 1

[Walter Roberson]

surf(my_image, 'edgecolor','none')