Iterative proportional fitting package?

Is there any package that implements the iterative proportional fitting procedure?

I was looking for the same, and I could not. I wonder if you found one? Since the algorithm is simple, it may be written easily, I guess.

no, i didn’t

I ended up writing a prototype script. Let me know if you are interested in having a look. Just to let you know, I am not working with matrices, but on systems of nonlinear equations.