def __init__(self,
transform,
sizex=0,
sizey=0,
labelx=None,
labely=None,
loc=4,
pad=0.1,
borderpad=0.1,
sep=2,
prop=None,
barcolor="black",
barwidth=0.4,
**kwargs):
"""
Draw a horizontal and/or vertical bar with the size in data coordinate
of the give axes. A label will be drawn underneath (center-aligned).
- transform : the coordinate frame (typically axes.transData)
- sizex,sizey : width of x,y bar, in data units. 0 to omit
- labelx,labely : labels for x,y bars; None to omit
- loc : position in containing axes
- pad, borderpad : padding, in fraction of the legend font size (or prop)
- sep : separation between labels and bars in points.
- **kwargs : additional arguments passed to base class constructor
"""
bars = AuxTransformBox(transform)
if sizex:
arr = FancyArrowPatch(
(0, 0),
(sizex, 0),
shrinkA=0,
shrinkB=0,
ec=barcolor,
lw=barwidth,
fc="none",
arrowstyle="|-|",
)
arr.set_capstyle("butt")
bars.add_artist(arr)
if sizey:
bars.add_artist(
Rectangle((0, 0),
0,
sizey,
ec=barcolor,
lw=barwidth,
fc="none"))
if sizex and labelx:
self.xlabel = TextArea(labelx, minimumdescent=False)
bars = VPacker(children=[bars, self.xlabel],
align="center",
pad=0,
sep=sep)
if sizey and labely:
self.ylabel = TextArea(labely)
bars = HPacker(children=[self.ylabel, bars],
align="center",
pad=0,
sep=sep)
AnchoredOffsetbox.__init__(self,
loc,
pad=pad,
borderpad=borderpad,
child=bars,
prop=prop,
frameon=False,
**kwargs)
