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Title: FIX: clean up unit conversion unpacking of data, particularly for dates and pandas series by jklymak · Pull Request #11664 · matplotlib/matplotlib · GitHub

Open Graph Title: FIX: clean up unit conversion unpacking of data, particularly for dates and pandas series by jklymak · Pull Request #11664 · matplotlib/matplotlib

X Title: FIX: clean up unit conversion unpacking of data, particularly for dates and pandas series by jklymak · Pull Request #11664 · matplotlib/matplotlib

Description: PR Summary Closes #10022 and #11391 This does one small thing (run units conversion on the position argument of bxp/boxplot) and two big things: At unit conversion, run np.asarray on incoming objects to unpack numpy arrays from them. Previously in order to get native pandas support we were unpacking the values field, but running np.asarray does the same thing and allows the packed values to not necessarily be stored in values. i.e. dates = np.arange('2005-02', '2005-05', dtype='datetime64[M]') values = np.sin(np.array(range(len(dates)))) df = pd.DataFrame({'dates': dates, 'z': values}) print(df['dates']) print(np.asarray(df['dates'])) print(df['dates'].values) returns: 0 2005-02-01 1 2005-03-01 2 2005-04-01 Name: dates, dtype: datetime64[ns] ['2005-02-01T00:00:00.000000000' '2005-03-01T00:00:00.000000000' '2005-04-01T00:00:00.000000000'] ['2005-02-01T00:00:00.000000000' '2005-03-01T00:00:00.000000000' '2005-04-01T00:00:00.000000000'] This re-does #10638, which unpacked pandas py checking for and using values. For the pandas tests, this deregisters the pandas converters, because its not clear we should be testing those. With the above, our native date handling should be able to strip pandas series of their date information and convert. This passes all the pandas tests, but I admit this may be a controversial step. Immediate fix code: import numpy as np import pandas as pd import matplotlib.pyplot as plt pd.plotting.deregister_matplotlib_converters() data = np.random.rand(5,2) years = pd.date_range('1/1/2000', periods=2, freq=pd.DateOffset(years=1)).year # Does not work plt.figure() plt.boxplot(data, positions=years) plt.show() failed on master. This fixes... PR Checklist Has Pytest style unit tests Code is PEP 8 compliant New features are documented, with examples if plot related Documentation is sphinx and numpydoc compliant Added an entry to doc/users/next_whats_new/ if major new feature (follow instructions in README.rst there) Documented in doc/api/api_changes.rst if API changed in a backward-incompatible way

Open Graph Description: PR Summary Closes #10022 and #11391 This does one small thing (run units conversion on the position argument of bxp/boxplot) and two big things: At unit conversion, run np.asarray on incoming obje...

X Description: PR Summary Closes #10022 and #11391 This does one small thing (run units conversion on the position argument of bxp/boxplot) and two big things: At unit conversion, run np.asarray on incoming obje...

Opengraph URL: https://github.com/matplotlib/matplotlib/pull/11664

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