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Scipy2013 Sprint: Cleaning examples of api example #2181

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Scipy2013 Sprint: Cleaning examples of api example #2181

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73b263a
Add a bar plot with errors example
gabraganca Jun 29, 2013
444eecd
Remove unecessary variable
gabraganca Jun 29, 2013
b0f85e7
Clen bar plot demo
gabraganca Jun 29, 2013
df4da45
Improved docstring of barplot example
gabraganca Jun 29, 2013
db76ed3
Move bar plot demos to statistics folder
gabraganca Jun 29, 2013
fcc48f5
Clean two scaled y-axis demo.
gabraganca Jun 29, 2013
01a5e99
Change according @tonysyu suggestions and run PEP8
gabraganca Jul 3, 2013
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Change according @tonysyu suggestions and run PEP8
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@gabraganca
gabraganca committed Jul 3, 2013
commit 01a5e99770c06fe14816879f8ff85a4fa89c6396
28 changes: 15 additions & 13 deletions examples/subplots_axes_and_figures/fahrenheit_celsius_scales.py
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Expand Up @@ -6,30 +6,32 @@
import matplotlib.pyplot as plt
import numpy as np

fig, ax1 = plt.subplots() # ax1 is the Fahrenheit scale
ax2 = ax1.twinx() # ax2 is the Celsius scale

def fahrenheit2celsius(temp):
"""
Returns temperature in Celsius.
"""
return (5./9.)*(temp - 32)
return (5. / 9.) * (temp - 32)

def convert_ax2_to_celsius(ax1):

def convert_ax_c_to_celsius(ax_f):
"""
Update second axis according with first axis.
"""
y1, y2 = ax1.get_ylim()
ax2.set_ylim(fahrenheit2celsius(y1), fahrenheit2celsius(y2))
ax2.figure.canvas.draw()
y1, y2 = ax_f.get_ylim()
ax_c.set_ylim(fahrenheit2celsius(y1), fahrenheit2celsius(y2))
ax_c.figure.canvas.draw()

fig, ax_f = plt.subplots()
ax_c = ax_f.twinx()

# automatically update ylim of ax2 when ylim of ax1 changes.
ax1.callbacks.connect("ylim_changed", convert_ax2_to_celsius)
ax1.plot(np.linspace(-40, 120, 100))
ax1.set_xlim(0, 100)
ax_f.callbacks.connect("ylim_changed", convert_ax_c_to_celsius)
ax_f.plot(np.linspace(-40, 120, 100))
ax_f.set_xlim(0, 100)

ax1.set_title('Two scales: Fahrenheit and Celsius')
ax1.set_ylabel('Fahrenheit')
ax2.set_ylabel('Celsius')
ax_f.set_title('Two scales: Fahrenheit and Celsius')
ax_f.set_ylabel('Fahrenheit')
ax_c.set_ylabel('Celsius')

plt.show()