"""

============

Findobj Demo

============

Recursively find all objects that match some criteria

"""

import numpy as np

import matplotlib.pyplot as plt

import matplotlib.text as text

a = np.arange(0, 3, .02)

b = np.arange(0, 3, .02)

c = np.exp(a)

d = c[::-1]

fig, ax = plt.subplots()

plt.plot(a, c, 'k--', a, d, 'k:', a, c + d, 'k')

plt.legend(('Model length', 'Data length', 'Total message length'),

loc='upper center', shadow=True)

plt.ylim([-1, 20])

plt.grid(False)

plt.xlabel('Model complexity --->')

plt.ylabel('Message length --->')

plt.title('Minimum Message Length')

# match on arbitrary function

def myfunc(x):

return hasattr(x, 'set_color') and not hasattr(x, 'set_facecolor')

for o in fig.findobj(myfunc):

o.set_color('blue')

# match on class instances

for o in fig.findobj(text.Text):

o.set_fontstyle('italic')

plt.show()