from __future__ import print_function
import numpy as np
import matplotlib.mlab as mlab
import matplotlib.cbook as cbook

datafile = cbook.get_sample_data('aapl.csv', asfileobj=False)
print('loading', datafile)
r = mlab.csv2rec(datafile)

r.sort()
r1 = r[-10:]

# Create a new array
r2 = np.empty(12, dtype=[('date', '|O4'), ('high', np.float),
                         ('marker', np.float)])
r2 = r2.view(np.recarray)
r2.date = r.date[-17:-5]
r2.high = r.high[-17:-5]
r2.marker = np.arange(12)

print("r1:")
print(mlab.rec2txt(r1))
print("r2:")
print(mlab.rec2txt(r2))

defaults = {'marker': -1, 'close': np.NaN, 'low': -4444.}

for s in ('inner', 'outer', 'leftouter'):
    rec = mlab.rec_join(['date', 'high'], r1, r2,
                        jointype=s, defaults=defaults)
    print("\n%sjoin :\n%s" % (s, mlab.rec2txt(rec))) 

loading C:\Users\______\AppData\Local\Programs\Python
    \Python311\Lib\site-packages\matplotlib\mpl-data\sample_data\aapl.csv
Traceback (most recent call last):
  File "M:\______\rec_join_demo.py", line 8, in 
    r = mlab.csv2rec(datafile)
        ^^^^^^^^^^^^
AttributeError: module 'matplotlib.mlab' has no attribute 'csv2rec' 

loading C:\Program Files\Python312\Lib\site-packages\matplotlib\mpl-data\sample_data\aapl.csv
Traceback (most recent call last):
  File "E:\______\rec_join_demo.py", line 8, in 
    r = mlab.csv2rec(datafile)
        ^^^^^^^^^^^^
AttributeError: module 'matplotlib.mlab' has no attribute 'csv2rec' 

• 2023/11/18 Ver=1.04 Python 3.12.0 (matplotlib 3.8.1)で確認
• 2023/11/18 Ver=1.04 Python 3.11.6 (matplotlib 3.7.1)で確認
• 2023/03/31 Ver=1.03 Python 3.11.2 で確認
• 2020/10/30 Ver=1.01 Python 3.7.8 で確認
• 2018/11/25 Ver=1.01 初版リリース

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