[Cmpl] CMPL reading data other than from csv

[Mike Steglich]

Hi Shawn,

Thank your for your interest in CMPL.

You can also use the include statement to read data. This feature is intended to read external CMPL code (especially data expressions) in a CMPL model.  I use that to execute a CMPL model with different data sets. 
But your data expressions have to be formulated in CMPL syntax. Therefore we are working on a new data file format with a simplified syntax. The idea is to have an easier way to generate a data file automatically or to copy and paste data from another application into a CMPL data file.

Please take look at my presentation that I gave at the Informs 2011 conference:
http://www.coliop.org/download/cmplInforms2011.pdf
Beginning at slide 12 you can find some information about this new data file format.

We plan to release this new feature until June. 

Cheers,

Mike

Am 13.04.2012 um 04:18 schrieb Shawn Helm <helm.shawn at gmail.com>:

> Hi,
> 
> I just came across CMPL and it looks great!  I really appreciate how it is easy it is to switch between different solvers.   I also really like that you have a webservice set up to show how it works.  I have a model currently in python and it reads from a database for the perimeters then solves the model.  This works well, but it is hard to switch between solvers without using a different math programming language syntax ( PuLP, Numberjack, pyomo, etc.), whereas CMPL supports both SCIP and Gurobi with the same syntax.
> 
> Is there a way to point CMPL at a database, rather then just CSV files, or is that planned?  
> 
> Thanks!
> Shawn 
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