Is there a function to sum matrix elements along an arbitrary direction?

Hi

I would like to know if there is a Matlab build-in function that calculates the sum of elements along a direction that is not vertical or horizontal.

Something like output_matrix=sumdir(input_matrix, phi, length)

I couldn't find anything on the matlab help so I would appreciate your help.

Thanks a lot

Jan

Answer 1

[Matt J]

The RADON function, if you have the Image Processing Toolbox.

[Jan]

I thought of this function but is says that:

"The Radon transform is the projection of the image intensity along a radial line oriented at a specific angle."

I don't want to make a projection of the whole image, I just want to sum along one direction

[Jan]

And decide of the length of the summation

[Jan]

Sorry for my two previous messages I see how I can make it work with the radon function.

Thanks a lot