This is one of a scaling functions used to weight points depending on their persistence and/or location in the diagram. The scaling given by this function to a point (b,d) is an arctan of a persistence of a point (i.e. arctan( b-d ).
GUDHI Version 3.1.1 - C++ library for Topological Data Analysis (TDA) and Higher Dimensional Geometry Understanding. - Copyright : MIT | Generated on Fri Feb 7 2020 16:35:36 for GUDHI by Doxygen 1.8.13 |