[Octave-bug-tracker] [bug #52420] inputParser optional argument is "not a valid parameter"

[Rik]

Update of bug #52420 (project octave):

                  Status:               Confirmed => Need Info              

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Follow-up Comment #2:

Can the original reporter test this code, as written, in Matlab?  I'm not
certain that it is valid.  According to the documentation for addOptional
(http://www.mathworks.com/help/matlab/ref/inputparser.addoptional.html),
addOptional creates a positional input variable, not a key/value pair.


Arguments added to the input parser scheme with the addOptional function are
positional. Therefore, add them to the input parser scheme in the same order
they are passed into the function.

Use addOptional to add an individual argument into the input parser scheme. If
you want to parse an optional name-value pair, use the addParameter function.


If you want to call with syntax of "name", value then you need to use
addParameter.  Making that change to foo allows the function to run
correctly.


function foo(a, varargin)
    p = inputParser();
    addParameter(p, 'sigma', 0, @isnumeric);
    parse(p, varargin{:});
    p.Results.sigma
end




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