<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi Indrjajit,<div class=""><br class=""></div><div class="">I analysed your problem with invoking Cplex shipped with the Ampl demo version. This Cplex version is customised for Ampl and can't be used with Cmpl. If you want to use Cplex then try to receive a normal Cplex version directly from IBM's academic initiative. This version works with Cmpl as I've described it in one of my last emails before.</div><div class=""><br class=""></div><div class="">I found a bug in readcsv() for reading a vector that is specified as n rows with one element in the csv file. I will fix it with the next release. In the meantime please specify a vector in a csv file one row with n elements. This works properly. </div><div class=""><br class=""></div><div class="">But I would like to suggest to use a cmplData file instead csv files. This is Cmpl's standard data format and it is more convenient and more flexible. </div><div class=""><br class=""></div><div class="">Thanks,</div><div class=""><br class=""></div><div class="">Mike</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""><div class=""><blockquote type="cite" class=""><div class="">Am 23.11.2014 um 20:05 schrieb Indrajit Sen Gupta <<a href="mailto:indrajitsg@gmail.com" class="">indrajitsg@gmail.com</a>>:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class=""><font face="monospace" class="">Hi Mike,</font></div><div class=""><font face="monospace" class=""></font> </div><div class=""><font face="monospace" class="">I am trying out one of the examples from the manual (Pg 31):</font></div><div class=""><font face="Courier New" class=""></font> </div><div class=""><font face="Courier New" class="">-------------------------------------------------------------------</font></div><div class=""><font face="monospace" class="">%arg -solver cbc<br class="">%arg -solutionAscii<br class="">parameters:</font></div><div class=""><font face="Courier New" class=""># Reading data from CSV<br class=""> c[] := readcsv("c.csv");<br class=""> b[] := readcsv("b.csv");<br class=""> A[,] := readcsv("a.csv");<br class=""></font></div><div class=""><font face="Courier New" class=""># Reading data directly<br class=""># c[] := (1,2,3);<br class=""># b[] := (15,20);<br class=""># A[,] := ((5.6, 7.7, 10.5),<br class=""># (9.8, 4.2, 11.1));<br class=""> <br class="">variables:<br class=""> x[defset(c[])] : real[0..];<br class=""> <br class="">objectives:<br class=""> c[]T * x[] -> max;</font></div><div class=""><font face="monospace" class="">constraints:<br class=""> A[,] * x[] <= b[];</font></div><font face="monospace" class=""><div class=""><font face="Courier New" class="">-------------------------------------------------------------------</font></div><div class="">When I use the readcsv command to read the data, this is the output that I get:</div><div class=""> </div><div class="">---------------------------------------------------------------------------------------------------------<br class="">Problem prob04.cmpl<br class="">Nr. of variables 3<br class="">Nr. of constraints 2<br class="">Objective name line[1]<br class="">Solver name CBC<br class="">Display variables (all)<br class="">Display constraints (all)<br class="">---------------------------------------------------------------------------------------------------------</div><div class="">Objective status optimal<br class="">Objective value 3.8961 (max!)</div><div class="">Variables <br class="">Name Type Activity Lower bound Upper bound Marginal<br class="">---------------------------------------------------------------------------------------------------------<br class="">x[1] C 0 0 Infinity -0.454545<br class="">x[2] C 1.94805 0 Infinity 0<br class="">x[3] C 0 0 Infinity -0.727273<br class="">---------------------------------------------------------------------------------------------------------</div><div class="">Constraints <br class="">Name Type Activity Lower bound Upper bound Marginal<br class="">---------------------------------------------------------------------------------------------------------<br class="">line[2] L 15 -Infinity 15 0.25974<br class="">line[3] L 8.18182 -Infinity 20 0<br class="">---------------------------------------------------------------------------------------------------------<br class=""></div><div class="">This is obviously not optimal. Now if I read the data directly from inside the CMPL file, I get the correct answer:</div><div class=""> </div><div class="">---------------------------------------------------------------------------------------------------------<br class="">Problem prob04.cmpl<br class="">Nr. of variables 3<br class="">Nr. of constraints 2<br class="">Objective name line[1]<br class="">Solver name CBC<br class="">Display variables (all)<br class="">Display constraints (all)<br class="">---------------------------------------------------------------------------------------------------------</div><div class="">Objective status optimal<br class="">Objective value 4.28571 (max!)</div><div class="">Variables <br class="">Name Type Activity Lower bound Upper bound Marginal<br class="">---------------------------------------------------------------------------------------------------------<br class="">x[1] C 0 0 Infinity -0.6<br class="">x[2] C 0 0 Infinity -0.2<br class="">x[3] C 1.42857 0 Infinity 0<br class="">---------------------------------------------------------------------------------------------------------</div><div class="">Constraints <br class="">Name Type Activity Lower bound Upper bound Marginal<br class="">---------------------------------------------------------------------------------------------------------<br class="">line[2] L 15 -Infinity 15 0.285714<br class="">line[3] L 15.8571 -Infinity 20 0<br class="">---------------------------------------------------------------------------------------------------------<br class=""></div><div class="">Any thoughts on why this is happening?</div><div class=""> </div><div class="">The contents of the CSV files are exactly as mentioned in page 31.</div><div class=""> </div><div class="">Regards,</div><div class="">Indrajit</div><div class=""> </div><div class=""> </div><div class=""><br class=""></div></font></div>_______________________________________________<br class="">Cmpl mailing list<br class=""><a href="mailto:Cmpl@list.coin-or.org" class="">Cmpl@list.coin-or.org</a><br class=""><a href="http://list.coin-or.org/mailman/listinfo/cmpl" class="">http://list.coin-or.org/mailman/listinfo/cmpl</a></div></blockquote></div></div><div><blockquote type="cite" class=""><div class="">Am 23.11.2014 um 20:05 schrieb Indrajit Sen Gupta <<a href="mailto:indrajitsg@gmail.com" class="">indrajitsg@gmail.com</a>>:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class=""><font face="monospace" class="">Hi Mike,</font></div><div class=""><font face="monospace" class=""></font> </div><div class=""><font face="monospace" class="">I am trying out one of the examples from the manual (Pg 31):</font></div><div class=""><font face="Courier New" class=""></font> </div><div class=""><font face="Courier New" class="">-------------------------------------------------------------------</font></div><div class=""><font face="monospace" class="">%arg -solver cbc<br class="">%arg -solutionAscii<br class="">parameters:</font></div><div class=""><font face="Courier New" class=""># Reading data from CSV<br class=""> c[] := readcsv("c.csv");<br class=""> b[] := readcsv("b.csv");<br class=""> A[,] := readcsv("a.csv");<br class=""></font></div><div class=""><font face="Courier New" class=""># Reading data directly<br class=""># c[] := (1,2,3);<br class=""># b[] := (15,20);<br class=""># A[,] := ((5.6, 7.7, 10.5),<br class=""># (9.8, 4.2, 11.1));<br class=""> <br class="">variables:<br class=""> x[defset(c[])] : real[0..];<br class=""> <br class="">objectives:<br class=""> c[]T * x[] -> max;</font></div><div class=""><font face="monospace" class="">constraints:<br class=""> A[,] * x[] <= b[];</font></div><font face="monospace" class=""><div class=""><font face="Courier New" class="">-------------------------------------------------------------------</font></div><div class="">When I use the readcsv command to read the data, this is the output that I get:</div><div class=""> </div><div class="">---------------------------------------------------------------------------------------------------------<br class="">Problem prob04.cmpl<br class="">Nr. of variables 3<br class="">Nr. of constraints 2<br class="">Objective name line[1]<br class="">Solver name CBC<br class="">Display variables (all)<br class="">Display constraints (all)<br class="">---------------------------------------------------------------------------------------------------------</div><div class="">Objective status optimal<br class="">Objective value 3.8961 (max!)</div><div class="">Variables <br class="">Name Type Activity Lower bound Upper bound Marginal<br class="">---------------------------------------------------------------------------------------------------------<br class="">x[1] C 0 0 Infinity -0.454545<br class="">x[2] C 1.94805 0 Infinity 0<br class="">x[3] C 0 0 Infinity -0.727273<br class="">---------------------------------------------------------------------------------------------------------</div><div class="">Constraints <br class="">Name Type Activity Lower bound Upper bound Marginal<br class="">---------------------------------------------------------------------------------------------------------<br class="">line[2] L 15 -Infinity 15 0.25974<br class="">line[3] L 8.18182 -Infinity 20 0<br class="">---------------------------------------------------------------------------------------------------------<br class=""></div><div class="">This is obviously not optimal. Now if I read the data directly from inside the CMPL file, I get the correct answer:</div><div class=""> </div><div class="">---------------------------------------------------------------------------------------------------------<br class="">Problem prob04.cmpl<br class="">Nr. of variables 3<br class="">Nr. of constraints 2<br class="">Objective name line[1]<br class="">Solver name CBC<br class="">Display variables (all)<br class="">Display constraints (all)<br class="">---------------------------------------------------------------------------------------------------------</div><div class="">Objective status optimal<br class="">Objective value 4.28571 (max!)</div><div class="">Variables <br class="">Name Type Activity Lower bound Upper bound Marginal<br class="">---------------------------------------------------------------------------------------------------------<br class="">x[1] C 0 0 Infinity -0.6<br class="">x[2] C 0 0 Infinity -0.2<br class="">x[3] C 1.42857 0 Infinity 0<br class="">---------------------------------------------------------------------------------------------------------</div><div class="">Constraints <br class="">Name Type Activity Lower bound Upper bound Marginal<br class="">---------------------------------------------------------------------------------------------------------<br class="">line[2] L 15 -Infinity 15 0.285714<br class="">line[3] L 15.8571 -Infinity 20 0<br class="">---------------------------------------------------------------------------------------------------------<br class=""></div><div class="">Any thoughts on why this is happening?</div><div class=""> </div><div class="">The contents of the CSV files are exactly as mentioned in page 31.</div><div class=""> </div><div class="">Regards,</div><div class="">Indrajit</div><div class=""> </div><div class=""> </div><div class=""><br class=""></div></font></div>
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