The pair distribution functions can be enabled by setting write_pair 1 in the parameter file.

The file will be written after the configuration file has been read and the initialization is complete. It has the name of the configuration file with the suffix .pair.

The format of the file is the same as the plotfile, every line has the distance and the value, the potentials are separated by two newlines.

The scaling is chosen in such a way that the maximum value is 1.

This is a pair distribution function for a binary system.