STIR user group meeting code that is slowly morphing into a SIMIND-STIR connection repo. This will eventually be megrged with https://github.com/samdporter/STIR-SIMIND-Connection I'll ensure better documentation shortly. In the meantime please see the demonstration notebook (less up to date) and script (more up to date) .smc and .atn files must be in the same folder (atm input)