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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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Clean two scaled y-axis demo.
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@gabraganca
gabraganca committed Jun 29, 2013
commit fcc48f59aca2eeea9351d019c7fae5e45fd74693
27 changes: 0 additions & 27 deletions examples/api/fahrenheit_celsius_scales.py
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35 changes: 35 additions & 0 deletions examples/subplots_axes_and_figures/fahrenheit_celsius_scales.py
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"""
Demo of how to display two scales on the left and right y axis.

This example uses the Fahrenheit and Celsius scales.
"""
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
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@tonysyu tonysyu Jul 3, 2013

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Really Minor: Maybe move figure/axes definitions down with the rest of the plotting code (i.e. below the function defs). Also, I think the inline comments should be removed here. (Maybe ax1 -> ax_f, ax2 -> ax_c?)


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

def convert_ax2_to_celsius(ax1):
"""
Update second axis according with first axis.
"""
y1, y2 = ax1.get_ylim()
ax2.set_ylim(fahrenheit2celsius(y1), fahrenheit2celsius(y2))
ax2.figure.canvas.draw()

# 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)

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

plt.show()