How to generate a coefficient matrix?

I am looking for some help with a starting place for the following.

This is help on an extra cresit problem for a class.

I am trying to take a series generate Matrix A ( highlighted in blue below) from a nxm matrix.

Answer 1

[Matt J]

One way is to use my FUNC2MAT submission.

A=func2mat(@(X) radon(X.',[0,45,90,135]),  ones(n,m));

[Matt J]

Kolton Jones' comment moved here:

Thank you, but my computer didn't recognize func2mat.

[Matt J]

That probably means the download was not successful.