[Os-project-managers] ticket 14 write to std out

[Kipp Martin]

 > > Is there something similar in any of the other COIN-OR projects 
that you
 > > like and can direct me to?

I like the message handling of Ipopt, where you can register several
journals that can handle output for different categories with differing
print levels. For the GAMSlinks we then have a GamsJournal that is used
to direct the output into the GAMS output channels.

Cbc and Osi-interfaced solvers use CoinMessageHandler. I do not really
like them because the message handler sometimes insert spaces or
newlines which make them very inflexible about what kind of output you
can print, but we have a GamsMessageHandler that does the job. Not all
Osi links support this yet. For Clp, Cbc, DyLP it should work. For the
trunk versions of Cpx, Msk, Xpr it should also work. Symphony I don't
remember.

For Bonmin and Couenne one has to pass in both an Ipopt::Journal and a
CoinMessageHandler.

Stefan



-- 
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