Calling function with varying number of parameters in Matlab

Question

I am using symbolic toolbox to generate a matlab function. But the number of input to the generated function is varying with the number of objects that I need (e.g., number

Answer 1

You probably look for cell arrays and the {:} operator. It changes the contents of the cell to a coma separated list. The result can be passed to a function as parameters. For example:

v2 = {a1, a2, b1, b2};
v3 = {a1, a2, a3, b1, b2, b3};

And an example function:

function fun(varargin)
    display(['number of parameters: ' num2str(nargin)]);

You can call the function for different number of parameters 'transparently' as follows

fun(v2{:})
number of parameters: 4

fun(v3{:})
number of parameters: 6

Answer 2

You can create functions with variable numbers of input arguments with varargin.

function fun(varargin)
a = cell2mat(varargin); % works only if arguments indeed only consists of scalars.

% your code comes hereafter