Frequently asked questions

Usage examples

Balloon lists available options when called with '-h' or '--help'. In order to perform energy minimization using the MMFF94-like force field, Balloon needs to know the location of the force field parameter file (named 'MMFF94.mff' in the distribution). The location of the file is given using the '--forcefield' ('-f' for short) switch or via the environment variable BALLOON_FORCEFIELD. If the parameter file is not found, Balloon uses distance geometry only. The conformer sampling genetic algorithm always requires the force field parameters.