e2ecdcfe33
Former-commit-id:a02aeb236c[formerly9f19e3f712] [formerlya02aeb236c[formerly9f19e3f712] [formerly06a8b51d6d[formerly 64fa9254b946eae7e61bbc3f513b7c3696c4f54f]]] Former-commit-id:06a8b51d6dFormer-commit-id:8e80217e59[formerly3360eb6c5f] Former-commit-id:377dcd10b9
28 lines
662 B
Python
Executable file
28 lines
662 B
Python
Executable file
"""
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Shoiw how to display two scales on the left and right y axis -- Fahrenheit and Celcius
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"""
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import matplotlib.pyplot as plt
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fig = plt.figure()
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ax1 = fig.add_subplot(111) # the Fahrenheit scale
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ax2 = ax1.twinx() # the Celcius scale
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def Tc(Tf):
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return (5./9.)*(Tf-32)
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def update_ax2(ax1):
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y1, y2 = ax1.get_ylim()
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ax2.set_ylim(Tc(y1), Tc(y2))
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ax2.figure.canvas.draw()
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# automatically update ylim of ax2 when ylim of ax1 changes.
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ax1.callbacks.connect("ylim_changed", update_ax2)
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ax1.plot([78, 79, 79, 77])
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ax1.set_title('Two scales: Fahrenheit and Celcius')
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ax1.set_ylabel('Fahrenheit')
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ax2.set_ylabel('Celcius')
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plt.show()
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