This function calls calc_global_metrics in parallel.
par_calc_global_metrics(dfs_per_time, geo)A dataframe with the group average timeseries, with columns:
set, t, pol, speed, shape, N (number of individuals),
missing_ind (whether some individuals are missing).
A list of dataframes per timestep.
Logical, whether positions are geographic coordinates, default = FALSE.
Marina Papadopoulou m.papadopoulou.rug@gmail.com