def __init__(self, figure, xytip, xybase, width=<NUM_LIT:4>, frac=<NUM_LIT:0.1>, headwidth=<NUM_LIT:12>, **kwargs):
self.figure = figure<EOL>self.xytip = xytip<EOL>self.xybase = xybase<EOL>self.width = width<EOL>self.frac = frac<EOL>self.headwidth = headwidth<EOL>Patch.__init__(self, **kwargs)<EOL>
Constructor arguments:

*xytip*
  (*x*, *y*) location of arrow tip

*xybase*
  (*x*, *y*) location the arrow base mid point

*figure*
  The :class:`~matplotlib.figure.Figure` instance
  (fig.dpi)

*width*
  The width of the arrow in points

*frac*
  The fraction of the arrow length occupied by the head

*headwidth*
  The width of the base of the arrow head in points

Valid kwargs are:
%(Patch)s