Background Window Plotting not working with 2D signal

[k8macarthur]

Describe the bug

Running the following line from the example note book:

cs.isig[5.:12.5].plot(True, integration_windows=iw, background_windows=bw)

Results in the following error:

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
Cell In[15], line 1
----> 1 cs.isig[5.:12.5].plot(True, integration_windows=iw, background_windows=bw)

File ~\AppData\Local\anaconda3\lib\site-packages\exspy\signals\eds.py:933, in EDSSpectrum.plot(self, xray_lines, only_lines, only_one, background_windows, integration_windows, navigator, plot_markers, autoscale, norm, axes_manager, navigator_kwds, **kwargs)
    857 """Plot the EDS spectrum. The following markers can be added
    858 
    859 - The position of the X-ray lines and their names.
   (...)
    922 get_lines_intensity, estimate_background_windows
    923 """
    924 super().plot(
    925     navigator=navigator,
    926     plot_markers=plot_markers,
   (...)
    931     **kwargs,
    932 )
--> 933 self._plot_xray_lines(
    934     xray_lines,
    935     only_lines,
    936     only_one,
    937     background_windows,
    938     integration_windows,
    939     render_figure=False,
    940 )
    941 self._render_figure(plot=["signal_plot"])

File ~\AppData\Local\anaconda3\lib\site-packages\exspy\signals\eds.py:989, in EDSSpectrum._plot_xray_lines(self, xray_lines, only_lines, only_one, background_windows, integration_windows, render_figure)
    987 self.add_xray_lines_markers(xray_lines, render_figure=False)
    988 if background_windows is not None:
--> 989     self._add_background_windows_markers(
    990         background_windows, render_figure=False
    991     )
    992 if integration_windows is not None:
    993     if integration_windows == "auto":

File ~\AppData\Local\anaconda3\lib\site-packages\exspy\signals\eds.py:1142, in EDSSpectrum._add_background_windows_markers(self, windows_position, render_figure)
   1140 segments = np.array(segments)
   1141 lines = hs.plot.markers.Lines(segments=segments, color="black")
-> 1142 self.add_marker(lines, render_figure=False)
   1143 if render_figure:
   1144     self._render_figure(plot=["signal_plot"])

File ~\AppData\Local\anaconda3\lib\site-packages\hyperspy\signal.py:6505, in BaseSignal.add_marker(self, marker, plot_on_signal, plot_marker, permanent, plot_signal, render_figure)
   6502     raise ValueError("Markers can not be added to several signals")
   6504 m._plot_on_signal = plot_on_signal
-> 6505 m._signal = self
   6507 if plot_marker:
   6508     if self._plot is None or not self._plot.is_active:

File ~\AppData\Local\anaconda3\lib\site-packages\hyperspy\drawing\markers.py:283, in Markers._signal(self, signal)
    278         nav_shape = value.shape if is_iterating(value) else ()
    279         if (
    280             len(nav_shape) != 0
    281             and nav_shape != signal.axes_manager.navigation_shape
    282         ):
--> 283             raise ValueError(
    284                 "The shape of the variable length argument must match "
    285                 "the navigation shape of the signal."
    286             )
    287 self.__signal = signal

ValueError: The shape of the variable length argument must match the navigation shape of the signal.

Expected behavior

Should run without error and allow the user to navigate over pixels and see how the background fitting should be performing

Python environement:

• eXSpy version: 0.2
• HyperSpy version: 2.1.1
• Python version: 3.10.9