API Changes for 3.3.1


Reverted deprecation of num2epoch and epoch2num

These two functions were deprecated in 3.3.0, and did not return an accurate Matplotlib datenum relative to the new Matplotlib epoch handling (get_epoch and rcParams["date.epoch"] (default: '1970-01-01T00:00:00')). This version reverts the deprecation.

Functions epoch2num and dates.julian2num use date.epoch rcParam

Now epoch2num and (undocumented) julian2num return floating point days since get_epoch as set by rcParams["date.epoch"] (default: '1970-01-01T00:00:00'), instead of floating point days since the old epoch of "0000-12-31T00:00:00". If needed, you can translate from the new to old values as old = new + mdates.date2num(np.datetime64('0000-12-31'))