Re: `argn' ? … still part of Octave ?

[Ben Abbott]

On Oct 24, 2011, at 6:09 AM, Carnë Draug wrote:

> On 23 October 2011 19:21, Ben Abbott <address@hidden> wrote:
>> On Oct 5, 2011, at 9:31 PM, Carnë Draug wrote:
>> 
>>> On 6 October 2011 01:27, John W. Eaton <address@hidden> wrote:
>>>> | idea is to use arg (or inputname) to get the name of the variable in
>>>> | the caller and change its value with assignin('caller',...)
>>>> 
>>>> OK, I guess you can try that, but it will be somewhat slow and
>>>> it seems to me that it will definitely be clumsy.
>>> 
>>> I know. But the class I'm trying to implement (inputParser) already
>>> exists in MatLab. It's for the sake of compatibility. And I'm learning
>>> something new in the process too :)
>>> 
>>> Carnë
>> 
>> Carnë,
>> 
>> Any progress on implementing a compliant inputParser?
>> 
>> I had contacted Nico Schlomer and cooperated with him to modify his 
>> matlab2tikz to allow it to run on Octave. He had made good use of Matlab's 
>> inputParser. The replacement used by matlab2tikz contains much of the same 
>> functionality.
>> 
>>        http://win.ua.ac.be/~nschloe/content/matlab2tikz
>> 
>> You may find some code there that is helpful toward your effort (Take a look 
>> at matlab2tikzInputParser.m)
> 
> Hi Ben,
> 
> yes. I finished it some days ago but I still need to write the
> documentation and would like to test it a bit more before submitting
> it ( https://gitorious.org/octave-devel/inputparser ). I do not have
> matlab to test how compliant it is, I've just been following what they
> have written on the inputParser documentation. Hopefully it'll be
> ready sometime during next weekend.
> 
> But thank you for the link. I looked on the way he did it and found it
> very interesting how he mimicked an object by creating a struct with
> fields that are simply function handles for functions that were only
> in scope when the struct was created.
> 
> Carnë

The parser code now used by matalbtikz is mostly mine. I has originally tried 
to do what you are working on. My original code with the "@inputParser" 
directory is attached.

There is a simple example from the ML docs below.

       p = inputParser; 
 
       p.addRequired('a'); 
       p.addOptional('b',1);
       p.addParamValue('c',2);
 
       p.parse(10, 20, 'c', 30);
       res = p.Results
 
       res = 
          a: 10
          b: 20
          c: 30

I was unable to fake the self modifying methods (I'll take a look at how you 
did that later today). Instead, my implementation works as ...

       p = inputParser; 
 
       p = p.addRequired(p, 'a'); 
       p = p.addOptional(p, 'b',1);
       p = p.addParamValue(p, 'c',2);
 
       p = p.parse(p, 10, 20, 'c', 30);
       res = p.Results
 
       res = 
          a: 10
          b: 20
          c: 30

Ben
.

@inputParser.zip
Description: Zip archive