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gams:how_can_i_find_unused_symbols_in_my_gams_model [2007/08/14 08:57]
gams:how_can_i_find_unused_symbols_in_my_gams_model [2007/08/14 08:57] (current)
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 +====== How can I find unused symbols in my GAMS model? ======
 +Q: //I'd like to find unused symbols in my GAMS models, e.g. sets and parameters that are declared but never used: not assigned to or referenced. ​ I can look at the $onsymxref output but is there something that just tells me the unused symbols?//
 +You can get that information from a symbol reference file. Add the command line option ''​rf=text'',​ where ''​text''​ is the name of your reference file to your GAMS command line. All symbol references will be written to this file. 
 +If you use the GAMS IDE,  click on the line in your process window, which starts with 
 +''​--- RefFile ..''  ​
 +and you will get the contents of the reference file (here ''​trnsport.ref''​) nicely organized. The last tab (unused) shows the unused symbols. A double click on of the entries will get you to the corresponding ​ position in the source file. 
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