[Cbc] Fwd: ask for help

[Christos]

-i do not know if this list is the appropriate place to ask this type of 
questions or the cbc-tickets at list.coin-or.org 
<mailto:cbc-tickets at list.coin-or.org>

-I corrected many errors but now i have some  questions:

When i run the attached program (the DAS function)
trying to solve this 
problem:http://imageshack.us/content_round.php?page=done&l=img855/4619/photo31211131234.jpg&via=mupload&newlp=1 
<http://imageshack.us/content_round.php?page=done&l=img855/4619/photo31211131234.jpg&via=mupload&newlp=1>

i get the message "*Problem proven infeasible*"
_
The lower bounds are positive._

I used _as a guide the SOS1_ model.

Is this solver's defect, or SOS1's?



like what should the code, for calling cbc and solving, be?

If you have some spare time, it would be really helpful to_make a 
session on teamviewer or skype_
Thank you


On 3/12/2011 12:42, John Forrest wrote:
> Christos,
>
> The matrix you are passing in is bad.  At about line 130 it should be
>
> start[k]=k;
>
> not
>
> start[k]=t;
>
> (Odd problem with just one element for each column)
>
> Problem says infeasible - which it is.
>
> The SOS says only one of x0,x1,x2 can be nonzero but they all have 
> positive lower bounds.
>
> John Forrest
> On 03/12/11 09:44, Christos wrote:
>> I know you are very very busy
>> but it's critical for me to overcome this problem in order to 
>> continue my work
>> which is not on cbc , but uses it as a tool.
>>
>> My work is on solving Day Ahead Schedule  problem (energy cost and 
>> efficiency in a country) with convetional methods (an excel file with 
>> data and an exe which uses it) and analyze DAS on it.
>>
>> And i only want to use cbc only to solve it, as a tool.
>>
>> So, any help on passing the problem to cbc will be much appreciated.
>>
>> When anyone of you, have any free time please contact me in order to 
>> arrange a session.
>>
>> I do not think will cost you more than 5 minutes..
>>
>> Thank you
>>
>> the problem is in the attached file (DAS function)
>>
>>
>>
>>
>> -------- Original Message --------
>> Subject: 	ask for help
>> Date: 	Tue, 29 Nov 2011 23:35:16 +0200
>> From: 	Christos <chtsolak at auth.gr>
>> To: 	cbc at list.coin-or.org
>>
>>
>>
>> Hi,
>> because i am trying to understand and pass a problem, which i created,
>> to cbc, 3 weeks now,
>>
>> can anyone dedicate 5 minutes, to help me write 5 lines of code via
>> skype or teamviewer?
>>
>> He would be really helpful.
>>
>> Thank you in advance
>>
>>
>>
>> _______________________________________________
>> Cbc mailing list
>> Cbc at list.coin-or.org
>> http://list.coin-or.org/mailman/listinfo/cbc
>

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