如何在Octave中使用带自定义功能的地图？

Question

Assume I have a collection A :

A = [0:6:100]

And I have a function fib(n) :

function retval=fib(n)
   g1=(1+5^.5)/2
   g2=(1-5^.5)/2
   retval=(1/5^.5)*(g1^n - g2^n)
endfunction 

I intend to be able to apply fib(n) on A , and store it in a collection say B, where B[i,j] is (i,fib(i)) , so I can plot i vs fib(i) and see the results on a graph.

Please advise on how I can use map to obtain this desired collection B .

Answer 1

You can do it like this:

map(@fib, A)

The @ makes fib into a function handle. Note that map is being deprecated and you should use arrayfun instead:

arrayfun(@fib, A)