chooseargs

C = chooseargs(f,argidx,idxc,[f_inputs])

chooseargs allows direct selection of any
combination of arguments to a function f
that has the following form:

[y1,y2,...,yM] = f(f_inputs)

and outputs a cell C such that:

C{k} == y[argidx(k)](idxc{k}).

Comma-separated multidimensional
indices are allowed if the entries of
the cell idxc are themselves cells.

Example:

A=magic(3)

[y1,y2]=max(A);

%returns y1=[8,9,7], y2=[1,3,2]

chooseargs(@max,1,[2,3],A)
%returns y1([2,3])=[9,7]
chooseargs(@max,1,{1,[2,3]},A)
%returns y1(1,[2,3])=[9,7]
chooseargs(@max,2,[],A)
%returns y2=[1,3,2]
chooseargs(@max,2,{[1,1],[2,3]},A)
%returns y2([1,1],[2,3]) = [3,2;3,2]
chooseargs(@max,[1,2],{{[1,1],[2,3]},[]},A)
%returns {y1([1,1],[2,3]),y2}
% = {[9,7;9,7],[1,3,2]}