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<p class="MsoNormal">John, <o:p></o:p></p>
<p class="MsoNormal">“import” was exactly the command I was toying around, but no variation of it seems to work.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I find “type” to be the windows equivalent of “cat”, so I can list file contents on the standard output, and the pipe “|” seems to work identically on windows (“Reads the output from one command and writes it to the input of another command”).<o:p></o:p></p>
<p class="MsoNormal">Indeed “type model.mod | glpsol -m /dev/stdin” works for GLPK; obviously this is not how I would use it since the whole point is to avoid the phsysical file, but what you write (ie the part from the pipe onwards
<span style="font-family:Wingdings">J</span> ) replicates my need exactly.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You say you committed such a fix in the trunk; does this mean I only have to wait till the next release, then I can call my System.Diagnostics.Process with “cbc import stdin_lp solve solution output.out” and my lp model as an input stream?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Ted,<o:p></o:p></p>
<p class="MsoNormal">If i try to call “type model.lp | cbc -import -", this is the output i get:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">command line - cbc -import - (default strategy 1)<o:p></o:p></p>
<p class="MsoNormal">Current default (if $ as parameter) for import is<o:p></o:p></p>
<p class="MsoNormal">Switching to line mode<o:p></o:p></p>
<p class="MsoNormal">Coin:No match for \* - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">No match for Problem: - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">No match for model - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">No match for *\ - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">Coin:Coin:Coin:No match for a: - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">No match for + - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">No match for x - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">Coin:Coin:No match for Subject - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">No match for To - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">Coin:No match for c: - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">No match for + - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">No match for x - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">No match for > - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">No match for -0 - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">Coin:Coin:No match for Bounds - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">Coin:No match for x - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">No match for free - ? for list of commands<o:p></o:p></p>
<p class="MsoNormal">Coin:Coin:Total time (CPU seconds): 0.07 (Wallclock seconds): 0.07<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">so it is trying to match every word in the file (!) to a cbc command.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If I try to call “type model.lp | cbc -import stdin”, it says “Unable to open file .\stdin”, so it’s treating it a regular filename.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As for building GMPL into CBC, you correctly pointed out the licensing issues I want to avoid, but if/when you’re able to replicate it under current compilers, it would be great, at least for future reference.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you all very much,<o:p></o:p></p>
<p class="MsoNormal">Pietro<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>Pietro,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>If you can do something like this (in linux) would that work?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>cat test.lp |bin/cbc -import stdin_lp -solve<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>Welcome to the CBC MILP Solver<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>command line - bin/cbc -import stdin_lp -solve (default strategy 1)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>Continuous objective value is 3.23684 - 0.00 seconds<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>Cgl0004I processed model has 1 rows, 3 columns (0 integer) and 3 elements<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>Cbc3007W No integer variables - nothing to do<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>I have committed fixes to trunk - key thing is to import from stdin_lp
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>(exact spelling needed)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>Does anyone know how to get GMPL working on Windows?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">>John Forrest<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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