Calculating polder maps

This tutorial shows how to calculate a polder map with the Phenix GUI. ---------------- Polder map documentation: https://www.phenix-online.org/documen... ---------------- Presentation about polder: https://www.phenix-online.org/present... ---------------- Presentation explaining how to run polder: https://www.phenix-online.org/present... ---------------- Polder reference: https://doi.org/10.1107/S205979831601...