Re: [newbie] how to avoid a for-loop

[Pantxo Diribarne]

Le 18/12/2014 21:38, Jean Dubois a écrit :
> 2014-12-18 18:23 GMT+01:00 Pantxo <address@hidden>:
> > Hi,
> >
> > Does the following help ?
> >
> > function [result] = calp(m)
> >    tmp = arrayfun (@(x) nchoosek (2*m-x, x), 0:m,
> >                           "uniformoutput", false);
> >    result = cell2mat (tmp);
> > endfunction
> Thank you Pantxo, this works fine, maybe you could tell me what the
> use or reason is of: "uniformoutput", false?
>
>
> thanks
> jean
It was a mistake :-), "result = arrayfun (@(x) nchoosek (2*m-x, x), 
0:m)" was enough. Here the outputs of "nchoosek" are always scalar so 
they can be concatenated in a vector, hence "uniformouput" may be true 
(the default).
Whenever the ouputs of the expression/function in arrayfun are non 
scalar values, the "uniformoutput" must be set to false, and the outputs 
will be returned in a cell array. See "help arrayfun" for examples.

Pantxo