Algorithm (Workflow)

This function, getvarg, is designed to search through a list of input arguments (argin) for a specific string (paramstr) and return a flag (f) indicating whether the string was found, along with any subsequent arguments (P).

Input Parameters

• argin: A cell array of input arguments, typically passed as varargin in MATLAB functions.
• paramstr: The string to search for within argin.
• varargin: Optional parameters, where the first element can specify the number of required arguments following paramstr (npnp), and the second element can specify a default value for P.

Output Results

• f: An index (or 0) indicating the position of paramstr in argin. If not found, f is 0.
• P: The argument(s) following paramstr in argin. If npnp is specified, it returns that many arguments. If only one argument is found, it returns that argument directly.

Algorithm Steps

1. Initialize f to 0 and P to an empty cell array.
2. Determine the number of required arguments (np) and default value for P using getfuncparams.
3. If argin is not empty, iterate through each element:
• Check if the current element is a string and matches paramstr (case-insensitive).
• If a match is found, set f to the current index.
• If there is a subsequent element, assign it to P.
• Break the loop after finding the first match.
4. If np is greater than 0 and there are enough elements, assign the next np elements to P.
5. If P contains only one element, return it directly instead of as a cell array.