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"""
==============
Load converter
==============
This example demonstrates passing a custom converter to `numpy.genfromtxt` to
extract dates from a CSV file.
"""
import dateutil.parser
from matplotlib import cbook
import matplotlib.pyplot as plt
import numpy as np
datafile = cbook.get_sample_data('msft.csv', asfileobj=False)
print('loading', datafile)
data = np.genfromtxt(
datafile, delimiter=',', names=True,
dtype=None, converters={0: dateutil.parser.parse})
fig, ax = plt.subplots()
ax.plot(data['Date'], data['High'], '-')
fig.autofmt_xdate()
plt.show()
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