Make processed unit defalut to raw unit

src/python_spectrometer/_plot_manager.py

@@ -30,7 +30,7 @@ class PlotManager:
                  plot_amplitude: bool = True, plot_density: bool = True,
                  plot_cumulative_normalized: bool = False, plot_style: _styleT = 'fast',
                  plot_update_mode: str = 'never', plot_dB_scale: bool = False, prop_cycle=None,
-                 raw_unit: str = 'V', processed_unit: str = 'V',
+                 raw_unit: str = 'V', processed_unit: str | None = None,
                  uses_windowed_estimator: bool = True, figure_kw: Optional[Mapping] = None,
                  subplot_kw: Optional[Mapping] = None, gridspec_kw: Optional[Mapping] = None,
                  legend_kw: Optional[Mapping] = None):
@@ -49,7 +49,7 @@ class PlotManager:
         self._plot_style = plot_style
         self._plot_update_mode = plot_update_mode
         self._plot_dB_scale = plot_dB_scale
-        self._processed_unit = processed_unit
+        self._processed_unit = processed_unit if processed_unit is not None else raw_unit
 
         # For dB scale plots, default to the first spectrum acquired.
         self._reference_spectrum: Optional[_keyT] = None

src/python_spectrometer/core.py

@@ -220,7 +220,7 @@ class Spectrometer:
     processed_unit : str
         The unit of the processed data. Can also be set dynamically by
         setting :attr:`processed_unit` in case it changed when using
-        :meth:`reprocess_data`.
+        :meth:`reprocess_data`. Defaults to `raw_unit`.
     figure_kw, gridspec_kw, subplot_kw, legend_kw : Mappings
         Keyword arguments forwarded to the corresopnding matplotlib
         constructors.
@@ -383,7 +383,7 @@ class Spectrometer:
                  threaded_acquisition: bool = True,
                  purge_raw_data: bool = False, prop_cycle=None, savepath: _pathT = None,
                  relative_paths: bool = True, compress: bool = True, raw_unit: str = 'V',
-                 processed_unit: str = 'V', figure_kw: Optional[Mapping] = None,
+                 processed_unit: str | None = None, figure_kw: Optional[Mapping] = None,
                  subplot_kw: Optional[Mapping] = None, gridspec_kw: Optional[Mapping] = None,
                  legend_kw: Optional[Mapping] = None):