remove plot from module

Author: wholmgren

pvlib/irradiance.py

@@ -3,27 +3,6 @@
 global horizontal irradiance, direct normal irradiance,
 diffuse horizontal irradiance, and total irradiance
 under various conditions.
-
-Extraterrestrial radiation can be modeled using :func:`extraradiation`.
-
-.. ipython:: python
-    
-    import numpy as np
-    import pandas as pd
-    import matplotlib.pyplot as plt
-    import pvlib
-    
-    times = pd.date_range('2014-01-01', '2015-01-01', freq='1D')
-    spencer = pd.Series(pvlib.irradiance.extraradiation(times, method='spencer'), times)
-    asce = pd.Series(pvlib.irradiance.extraradiation(times, method='asce'), times)
-    ephem = pvlib.irradiance.extraradiation(times, method='pyephem') # approx 100x slower than the above.
-    spencer.plot(label='spencer')
-    asce.plot(label='asce')
-    ephem.plot(label='pyephem')
-    plt.legend()
-    @savefig extraradiation.png width=4in
-    plt.ylabel('Extraterrestrial radiation (W/m^2)')
-    
 """
 
 from __future__ import division