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Hi Jonatan,<br>
<br>
CBC also loads problems in the CPLEX LP file format, which is much
simpler in my opinion.
(<a class="moz-txt-link-freetext" href="http://lpsolve.sourceforge.net/5.0/CPLEX-format.htm">http://lpsolve.sourceforge.net/5.0/CPLEX-format.htm</a>)<br>
<br>
To load a problem in LP format and save a solution in a TXT file
just call:<br>
<br>
cbc problem.lp solve solu solution.txt<br>
<br>
Cheers,<br>
<br>
Haroldo<br>
<br>
<div class="moz-cite-prefix">On 17-03-2016 10:31, Jonatan Knud
Lauritsen wrote:<br>
</div>
<blockquote
cite="mid:601224626.440063.1458221472885.JavaMail.yahoo@mail.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff;
font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial,
Lucida Grande, sans-serif;font-size:16px">
<div id="yui_3_16_0_ym18_1_1458220166696_33906"><span
id="yui_3_16_0_ym18_1_1458220166696_34043">Regarding use of
cbc. I understand that problem can be loaded and saved from
and to MPS file using commands import and export. But what
are commands for displaying and exporting to file the
results of optimization, specifically - the values of
variables?</span></div>
<div id="yui_3_16_0_ym18_1_1458220166696_33907"
class="qtdSeparateBR"><br>
<br>
</div>
<div style="display: block;"
id="yui_3_16_0_ym18_1_1458220166696_33912"
class="yahoo_quoted">
<div id="yui_3_16_0_ym18_1_1458220166696_33911"
style="font-family: HelveticaNeue, Helvetica Neue,
Helvetica, Arial, Lucida Grande, sans-serif; font-size:
16px;">
<div id="yui_3_16_0_ym18_1_1458220166696_33910"
style="font-family: HelveticaNeue, Helvetica Neue,
Helvetica, Arial, Lucida Grande, sans-serif; font-size:
16px;">
<div id="yui_3_16_0_ym18_1_1458220166696_33909" dir="ltr"><font
id="yui_3_16_0_ym18_1_1458220166696_33908"
face="Arial" size="2"> Den 15:25 torsdag den 17. marts
2016 skrev Jonatan Knud Lauritsen
<a class="moz-txt-link-rfc2396E" href="mailto:jonatan.lauritsen@yahoo.dk"><jonatan.lauritsen@yahoo.dk></a>:<br>
</font></div>
<br>
<br>
<div id="yui_3_16_0_ym18_1_1458220166696_33915"
class="y_msg_container">
<div id="yiv2061992926">
<div class="yiv2061992926yqt2785070014"
id="yiv2061992926yqtfd46905">
<div id="yui_3_16_0_ym18_1_1458220166696_33914">
<div id="yui_3_16_0_ym18_1_1458220166696_33913"
style="color:#000;background-color:#fff;font-family:HelveticaNeue,
Helvetica Neue, Helvetica, Arial, Lucida Grande,
sans-serif;font-size:16px;"><br clear="none">
<div id="yui_3_16_0_ym18_1_1458220166696_33916"
class="yiv2061992926qtdSeparateBR"><br
clear="none">
<br clear="none">
</div>
<div class="yiv2061992926yahoo_quoted"
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_26517"
style="display:block;">
<div
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_26516"
style="font-family:HelveticaNeue, Helvetica
Neue, Helvetica, Arial, Lucida Grande,
sans-serif;font-size:16px;">
<div
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_26515"
style="font-family:HelveticaNeue,
Helvetica Neue, Helvetica, Arial, Lucida
Grande, sans-serif;font-size:16px;">Hi!
<div class="yiv2061992926y_msg_container"
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_26520">
<div id="yiv2061992926">
<div
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_26519">
<div
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_26518"
style="color:#000;background-color:#fff;font-family:HelveticaNeue,
Helvetica Neue, Helvetica, Arial,
Lucida Grande,
sans-serif;font-size:16px;">
<div
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_17953"><br
clear="none">
</div>
<div dir="ltr"
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_17945">I
am starting to use CBC. I need
integer linear programming
solver and apparently CBC is the
right software from the COIN-OR
projects (I am not sure about
Symphony project, maybe it can
solve integer linear programs as
well). I am confused how to use
CBC. I expected cbc.dll, but
there is only cbc.exe available.
I am trying to use cbc.exe, I
managed to import and solve
problem but I don't understand
how to get results back - e.g.
how to see (and save to file)
values of the variables? That is
the first question.</div>
<div dir="ltr"
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_18488"><br
clear="none">
</div>
<div dir="ltr"
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_18489">The
second question is - is there
cbc.dll available? I found
CoinMP.dll and tried to use it,
but it seems to me an completely
incomplete project. E.g. after
importing and preparing
problems, the getColCount and
getRowCount returns zero values.
One can see in the source code
that lot of methodes simply
return dummy value and does
nothing. So - how CBC is
intended to use? My impression
is that CBC is simple collection
of source files and one should
combine, integrate them and
build them as one needes, there
is no ready dll (apart from
cbc.exe, which is not quite
suitable to be embedded in other
software as it works as
interactive session and not as
input-output program).</div>
<div dir="ltr"
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_18621"><br
clear="none">
</div>
<div dir="ltr"
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_18651">The
third question is about mps file
format which I am using. How to
specify integrality constraints
on variables in this file
format? Maybe cbc automatically
assumes that all the unkown
variables will be integers?
wikipedia mentions that MPS
extensions are suitable for
specifying integrality
constraints but do CBC supports
such extensions and where they
ar documented?</div>
<div dir="ltr"
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_18670"><br
clear="none">
</div>
<div dir="ltr"
id="yiv2061992926yui_3_16_0_ym18_1_1458220166696_18671">Thanks
in advance!<br clear="none">
</div>
</div>
</div>
</div>
<br clear="none">
<br clear="none">
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<br>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Cbc mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Cbc@list.coin-or.org">Cbc@list.coin-or.org</a>
<a class="moz-txt-link-freetext" href="http://list.coin-or.org/mailman/listinfo/cbc">http://list.coin-or.org/mailman/listinfo/cbc</a>
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
==================================================
Haroldo Gambini Santos
D.Sc, Computer Science
Universidade Federal de Ouro Preto
<a class="moz-txt-link-freetext" href="http://www.decom.ufop.br/haroldo/">http://www.decom.ufop.br/haroldo/</a></pre>
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