Matlab中一项功能的各种输入

Question

I know that I can have various input number by using varargin .

However, if you type sparse( in MATLAB, you can see that the input argument names are different for the number of input arguments.

I want to make such input style.

Is it possible to make such function? or is it only limitted to built-in function?

Answer 1

You can do this using the inputParser class and the addOptional method. Basically, MATLAB checks for the argument and if it does not exist in the function call, assigns a default value to it.

From docs :

addOptional(p,argName,default) adds optional input, argName, to the input parser scheme of inputParser object, p. When the inputs that you are checking do not include a value for this optional input, the input parser assigns the default value to the input.

addOptional(p,argName,default,validationFcn) specifies a validation function for the input argument.

See docs for inputParser and addOptional for examples.