Convert LOF to LP

Understanding LOF and LP file formats

LOF files are typically associated with the CPLEX optimization software and stand for List Of Files. These files are used to list multiple data or model files for batch processing in optimization tasks. On the other hand, LP files are Linear Programming model files, containing mathematical formulations of optimization problems in a standard, readable format. LP files are widely supported by various optimization solvers, including CPLEX, Gurobi, and others.

Why convert LOF to LP?

Converting a LOF file to an LP file is not a direct file format transformation. Instead, it involves extracting the referenced model files (often in LP or MPS format) listed in the LOF file and working with them individually. This is useful when you want to process or edit a single model file outside of a batch context.

How to convert LOF to LP

Since a LOF file is a plain text list of file paths, follow these steps:

1. Open the LOF file with a text editor (such as Notepad or VS Code).
2. Identify the LP files listed inside. Each line typically points to a model file.
3. Copy the desired LP file(s) path(s) and open them directly with your optimization software or text editor.
4. If you need to convert another format (like MPS) to LP, use CPLEX or Gurobi to export the model: File → Export → LP.

Best software for handling LOF and LP files

• IBM ILOG CPLEX Optimization Studio: Native support for both LOF and LP files. Use the CPLEX Interactive Optimizer to load LOF files and export models as LP.
• Gurobi Optimizer: Supports LP files and can convert models from other formats to LP.
• Text editors: For manual inspection and extraction of file paths from LOF files.

Summary

LOF files are batch lists, not model files themselves. To work with LP files, extract the referenced files from the LOF list and use optimization software like CPLEX or Gurobi for further processing or conversion.