Resolve "release v2.3.0"

Closes #440 (closed)

mlair/plotting/postprocessing_plotting.py

@@ -1313,6 +1313,14 @@ class PlotTimeEvolutionMetric(AbstractPlotClass):
         self.plot_name = f"{plot_name}_summary"
         self._plot(plot_data, years, months, vmin, vmax, None)
 
+        # line plot version
+        _data = data.mean(remaining_dim, skipna=True).transpose(model_type_dim, time_dim)
+
+        _d = data.to_dataset(name="error").to_dataframe().reset_index()
+        sns.lineplot(data=_d, x=time_dim, y="error", hue=model_type_dim, errorbar=("sd", 1),
+                     palette=sns.color_palette(), style=model_type_dim, dashes=False, markers="X")
+
+
     @staticmethod
     def _find_nan_edge(data, time_dim):
         coll = []