'Draw path, currently only attempts to draw bar charts.
This function attempts to sort a given path into a collection of
horizontal or vertical bar charts. Most of the actual code takes
place in functions from mpltools.py.
props.keys() -- [
\'data\',         (a list of verticies for the path)
\'coordinates\',  (\'data\', \'axes\', \'figure\', or \'display\')
\'pathcodes\',    (code for the path, structure: [\'M\', \'L\', \'Z\', etc.])
\'style\',        (style dict, see below)
\'mplobj\'        (the mpl path object)
props[\'style\'].keys() -- [
\'alpha\',        (opacity of path obj)
\'edgecolor\',
\'facecolor\',
\'edgewidth\',
\'dasharray\',    (style for path\'s enclosing line)
\'zorder\'        (precedence of obj when stacked)'

def draw_path(self, **props):

    self.msg += '                Attempting    to    draw    a    path\n'
    is_bar = mpltools.is_bar(self.current_mpl_ax.containers, **props)
    if is_bar:
        self.current_bars += [props]
    else:
        self.msg += "                This    path    isn't    a    bar,    not    drawing\n"
        warnings.warn("I    found    a    path    object    that    I    don't    think    is    part    of    a    bar    chart.    Ignoring.")
