[Os-project-managers] printModel

[R. Kipp Martin]

Hi Gus:

>
> I didn`t think you`d go for my original proposal, but can we agree on
> two commands? I think it is better to have
>
> printModel
> printRow n
>
> with different names for two very different situations. Especially if I
> have multiple models (which is possible in AMPL, or in a decomposition
> algorithm)
>
> printModel 5
>
> seems to be subject to misunderstandings. Why go there?

I think we need to discuss on Thursday with Jun's input. To be honest, I 
really do not like printModel and printRow. We are making things way too 
complicated. Also, printModel is  a method in OSInstance and in 
OSInstance there is no such thing as multiple models (and PLEASE do not 
try to introduce the idea).

The printModel was such a nice, useful, simple tool that I have used 
numerous times. I can see now that I should have kept it to myself.

Cheers


>
> Cheers
>
> gus
>
>
>>> printRow n
>>>
>>> prints row n, which could be a constraint if n>= 0 or an objective if
>>> n<0. I think it is a bit counterintuitive to have to specify
>>>
>>> printRow -2
>>>
>>> for the second objective, hence I am thinking of adding the possibility
>>> to specify
>>>
>>> printObjective 1
>>>
>>> instead. And once I got there, I figured I might as well add
>>>
>>> printConstraint n
>>>
>>> for symmetry.
>>
>> I think it is too complicated.
>>>
>>> 2. They would be available both in interactive mode and at the command
>>> line, but only for files that reside on the local machine.
>>>
>>> 3. In interactive mode, the command would, of course, be activated
>>> immediately. If a .osil file is available (i.e., has been read
>>> previously), then we print the osil file or parts of it, if none is
>>> available, we look for MPS, nl or GAMS files, in that order. If no file
>>> is available at all, an error is generated.
>>>
>>> 4. In command line mode, the command would be activated just before the
>>> service method is called. If no service method is given, the default is
>>> solve, so the printModel command is executed just before the solve.
>>
>> But I assume printModel is not the default, correct. I.e. if the user
>> does not specify a printModel, then nothing should get printed. Correct?
>>
>> Still not sure I buy into this being necessary in command line mode.
>>>
>>> I have not yet thought through what would happen if the optimization
>>> instance resides on the remote machine. I guess in that case the print
>>> command needs to be activated from inside the osol file, right?
>>
>> No, I would say we don't invoke. This is getting too complicated.
>>
>> Cheers
>>>
>>> When you have a chance, can you look this over and see if I am missing
>>> something obvious?
>>>
>>> Cheers
>>>
>>> gus
>>>
>>> -------------------------------------------------------
>>>
>>> Horand I. Gassmann, Professor
>>>
>>> School of Business Administration, Dalhousie University
>>> 6100 University Avenue
>>> Halifax, Nova Scotia, Canada , B3H 3J5
>>> ph. (902) 494-1844
>>> fax (902) 494-1107
>>>
>>> http://myweb.dal.ca/gassmann/
>>>
>>
>>
>> --
>> Kipp Martin
>> Professor of Operations Research
>> and Computing Technology
>> Booth School of Business
>> University of Chicago
>> 5807 South Woodlawn Avenue
>> Chicago, IL 60637
>> 773-702-7456
>> kmartin at chicagobooth.edu
>> http://www.chicagobooth.edu/faculty/bio.aspx?person_id=12825325568
>> http://projects.coin-or.org/OS
>>
>> Sent without Blackberry, Droid, iPhone, or any other
>> wireless device.
>> --
>>
>>
>
>
>
> -------------------------------------------------------
>
> Horand I. Gassmann, Professor
>
> School of Business Administration, Dalhousie University
> 6100 University Avenue
> Halifax, Nova Scotia, Canada , B3H 3J5
> ph. (902) 494-1844
> fax (902) 494-1107
>
> http://myweb.dal.ca/gassmann/
>


-- 
Kipp Martin
Professor of Operations Research
and Computing Technology
Booth School of Business
University of Chicago
5807 South Woodlawn Avenue
Chicago, IL 60637
773-702-7456
kmartin at chicagobooth.edu
http://www.chicagobooth.edu/faculty/bio.aspx?person_id=12825325568
http://projects.coin-or.org/OS

Sent without Blackberry, Droid, iPhone, or any other
wireless device.
--