scale_bar in plot() fails

[ramav87]

setting scale_bar=True to plot() method fails in some instances. In the below case, we tried plotting a (256,512) image dataset with the scale bar, and it throws the following error:

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
File ~/anaconda3/lib/python3.11/site-packages/IPython/core/formatters.py:340, in BaseFormatter.__call__(self, obj)
    338     pass
    339 else:
--> 340     return printer(obj)
    341 # Finally look for special method names
    342 method = get_real_method(obj, self.print_method)

File ~/anaconda3/lib/python3.11/site-packages/IPython/core/pylabtools.py:152, in print_figure(fig, fmt, bbox_inches, base64, **kwargs)
    149     from matplotlib.backend_bases import FigureCanvasBase
    150     FigureCanvasBase(fig)
--> 152 fig.canvas.print_figure(bytes_io, **kw)
    153 data = bytes_io.getvalue()
    154 if fmt == 'svg':

File ~/anaconda3/lib/python3.11/site-packages/matplotlib/backend_bases.py:2366, in FigureCanvasBase.print_figure(self, filename, dpi, facecolor, edgecolor, orientation, format, bbox_inches, pad_inches, bbox_extra_artists, backend, **kwargs)
   2362 try:
   2363     # _get_renderer may change the figure dpi (as vector formats
   2364     # force the figure dpi to 72), so we need to set it again here.
   2365     with cbook._setattr_cm(self.figure, dpi=dpi):
-> 2366         result = print_method(
   2367             filename,
   2368             facecolor=facecolor,
   2369             edgecolor=edgecolor,
   2370             orientation=orientation,
   2371             bbox_inches_restore=_bbox_inches_restore,
   2372             **kwargs)
   2373 finally:
   2374     if bbox_inches and restore_bbox:

File ~/anaconda3/lib/python3.11/site-packages/matplotlib/backend_bases.py:2232, in FigureCanvasBase._switch_canvas_and_return_print_method.<locals>.<lambda>(*args, **kwargs)
   2228     optional_kws = {  # Passed by print_figure for other renderers.
   2229         "dpi", "facecolor", "edgecolor", "orientation",
   2230         "bbox_inches_restore"}
   2231     skip = optional_kws - {*inspect.signature(meth).parameters}
-> 2232     print_method = functools.wraps(meth)(lambda *args, **kwargs: meth(
   2233         *args, **{k: v for k, v in kwargs.items() if k not in skip}))
   2234 else:  # Let third-parties do as they see fit.
   2235     print_method = meth

File ~/anaconda3/lib/python3.11/site-packages/matplotlib/backends/backend_agg.py:509, in FigureCanvasAgg.print_png(self, filename_or_obj, metadata, pil_kwargs)
    462 def print_png(self, filename_or_obj, *, metadata=None, pil_kwargs=None):
    463     """
    464     Write the figure to a PNG file.
    465 
   (...)
    507         *metadata*, including the default 'Software' key.
    508     """
--> 509     self._print_pil(filename_or_obj, "png", pil_kwargs, metadata)

File ~/anaconda3/lib/python3.11/site-packages/matplotlib/backends/backend_agg.py:457, in FigureCanvasAgg._print_pil(self, filename_or_obj, fmt, pil_kwargs, metadata)
    452 def _print_pil(self, filename_or_obj, fmt, pil_kwargs, metadata=None):
    453     """
    454     Draw the canvas, then save it using `.image.imsave` (to which
    455     *pil_kwargs* and *metadata* are forwarded).
    456     """
--> 457     FigureCanvasAgg.draw(self)
    458     mpl.image.imsave(
    459         filename_or_obj, self.buffer_rgba(), format=fmt, origin="upper",
    460         dpi=self.figure.dpi, metadata=metadata, pil_kwargs=pil_kwargs)

File ~/anaconda3/lib/python3.11/site-packages/matplotlib/backends/backend_agg.py:394, in FigureCanvasAgg.draw(self)
    392 def draw(self):
    393     # docstring inherited
--> 394     self.renderer = self.get_renderer()
    395     self.renderer.clear()
    396     # Acquire a lock on the shared font cache.

File ~/anaconda3/lib/python3.11/site-packages/matplotlib/_api/deprecation.py:384, in delete_parameter.<locals>.wrapper(*inner_args, **inner_kwargs)
    379 @functools.wraps(func)
    380 def wrapper(*inner_args, **inner_kwargs):
    381     if len(inner_args) <= name_idx and name not in inner_kwargs:
    382         # Early return in the simple, non-deprecated case (much faster than
    383         # calling bind()).
--> 384         return func(*inner_args, **inner_kwargs)
    385     arguments = signature.bind(*inner_args, **inner_kwargs).arguments
    386     if is_varargs and arguments.get(name):

File ~/anaconda3/lib/python3.11/site-packages/matplotlib/backends/backend_agg.py:411, in FigureCanvasAgg.get_renderer(self, cleared)
    409 reuse_renderer = (self._lastKey == key)
    410 if not reuse_renderer:
--> 411     self.renderer = RendererAgg(w, h, self.figure.dpi)
    412     self._lastKey = key
    413 elif cleared:

File ~/anaconda3/lib/python3.11/site-packages/matplotlib/backends/backend_agg.py:84, in RendererAgg.__init__(self, width, height, dpi)
     82 self.width = width
     83 self.height = height
---> 84 self._renderer = _RendererAgg(int(width), int(height), dpi)
     85 self._filter_renderers = []
     87 self._update_methods()

ValueError: Image size of 92837179x18567491 pixels is too large. It must be less than 2^16 in each direction.

<Figure size 640x480 with 2 Axes>