Given a vector v and fn f, how do I generate the matrix {v, f(v), f(f(v)), … f^k(v)}?
I have a vector x and a function f. I need to generate the matrix whose first column is v, second column is f(v), and so on up to the final column f^k(v). In a functional language I could use an unfold operation. I’ve had a look at the purrr cheatsheet, but I can’t spot any analogue.
Given a vector v and fn f, how do I generate the matrix {v, f(v), f(f(v)), … f^k(v)}?
I have a vector x and a function f. I need to generate the matrix whose first column is v, second column is f(v), and so on up to the final column f^k(v). In a functional language I could use an unfold operation. I’ve had a look at the purrr cheatsheet, but I can’t spot any analogue.