how to generate nl file

[gmen...@gmail.com]

I am trying to compile the source code of fg_write in order to create an nl file in a windows environment without success.
¿May somebody give me the fg_write.exe to transform a ampl file to a nl file or explain me how to do it?

[victor.z...@gmail.com]

fg_write is a function that takes an ASL object representing a problem instance and writes it to an .nl file. It doesn't transform AMPL file into an .nl file, for that you need the AMPL translator.

This fg_write function is a part of AMPL Solver Library (ASL) which can be compiled on Windows, for example, with CMake and Visual Studio or msbuild:

git clone https://github.com/ampl/ampl.git

cd ampl

cmake .

msbuild /p:Configuration=Release AMPL.sln

The built AMPL Solver Library (amplsolver.lib) will be placed in the solvers/Release directory.

HTH,

Victor

On Wed, May 14, 2014 at 5:25 AM, <gmen...@gmail.com> wrote:

I am trying to compile the source code of fg_write in order to create an nl file in a windows environment without success.
¿May somebody give me the fg_write.exe to transform a ampl file to a nl file or explain me how to do it?

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[gmen...@gmail.com]

 Thanks Victor

"fg_write is a function that takes an ASL object representing a problem instance and writes it to an .nl file. It doesn't transform AMPL file into an .nl file, for that you need the AMPL translator."

Then, is there any function that reads an AMPL file and generates the ASL object? 

[victor.z...@gmail.com]

Not that I'm aware of, but it is easy to write one by first invoking the AMPL translator to convert an AMPL file into an .nl file and then using fg_read to read the .nl file into an ASL object.

HTH,

Victor

  

  

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