How do I write a function that behaves differently according to the number of input arguments?

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Minh Tran
Minh Tran 2015-9-10
编辑： Thorsten 2015-9-10
First, is it possible to write a function that variably accepts some number of arguments? (It should be possible since to create objects, you often call functions and specify a variable number of properties that you wish to initialize).
Secondly, how do you count the number of arguments? Are arguments received as strings?

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回答（2 个）

Steven Lord
Steven Lord 2015-9-10
Take a look at VARARGIN, NARGIN, and NARGINCHK.
Thorsten
Thorsten 2015-9-10
编辑：Thorsten 2015-9-10
Use varargin as the parameter of your function that collects all arguments as elements of a cell array.
function myplot(varargin)
%number of arguments
numel(varargin)
% first argument
varargin{1}
You can use other arguments in front of varargin.
function myplot(x, y, varargin)

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