There seems to be an issue with how arguments are parsed when it comes
to determining the color of a line. Generally, it seems that 'c'
takes precedence over 'color'. However, this precedence seems to
change with the number of passed kwargs.
-------------
import matplotlib.pyplot as plt
import numpy as np
# 'c' seems to have precedence over 'color'
plt.plot(np.arange(10)-2, c='b', color='r') # line is blue
plt.plot(np.arange(10)-1, color='r', c='b') # line is blue
# But...
x = {'c': 'b',
'color': 'r',
'label': 'blah',
'linestyle': '-',
'linewidth': 3,
'marker': None}
# Some strange parsing error
plt.plot(np.arange(10)+1, **x) # line is red
del x['marker'] # delete any key but 'c' or 'color'
plt.plot(np.arange(10)+2, **x) # line is blue
x['zorder'] = 3 # add back any key
plt.plot(np.arange(10)+3, **x) # line is red
plt.show()
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