File: //opt/alt/python27/lib64/python2.7/site-packages/mpl_toolkits/axisartist/axisline_style.pyo
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The artist class that will be returend for SimpleArrow style.
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Extend the path to make a room for drawing arrow.
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Draw the axis line.
1) transform the path to the display cooridnate.
2) extend the path to make a room for arrow
3) update the path of the FancyArrowPatch.
4) draw
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