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%matplotlib inline


    

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from catplot.ep_components.ep_canvas import EPCanvas
from catplot.ep_components.ep_lines import ElementaryLine


    

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canvas = EPCanvas()


    

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line = ElementaryLine([0.0, 1.2, 0.8])


    

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canvas.add_line(line)
canvas.draw()
canvas.figure


    

    
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canvas.clear()


    

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canvas.figure


    

    
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canvas.draw()
canvas.figure


    

    
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canvas.deep_clear()


    

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canvas.draw()


    

    




---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-10-f025f76b7c0b> in <module>()
----> 1 canvas.draw()

/Users/zjshao/Documents/repos/catplot/catplot/ep_components/ep_canvas.py in draw(self)
    323         """
    324         if not self.lines:
--> 325             raise AttributeError("Can't draw an empty canvas")
    326 
    327         # Draw energy profile lines.

AttributeError: Can't draw an empty canvas