Fix matplotlib error caused by erroneous labelling of x-axes in plots

Author: mfitz

requirements/base.txt

@@ -4,7 +4,7 @@ geopandas >= 0.13, < 0.15
 importlib_resources >= 6, < 7
 ipykernel < 7
 lxml < 5
-matplotlib >= 3, < 3.10
+matplotlib >= 3, < 4
 numpy >= 1, < 2
 pandas >= 1.5, < 3
 plotly >= 4, < 6

src/pam/plot/stats.py

@@ -166,7 +166,7 @@ def plot_activity_duration(list_of_populations, exclude=None, axis=None):
         axis.bar(x, y)
         axis.plot()
         axis.set_title(title)
-        axis.xaxis.set_label("")
+        axis.xaxis.set_label_text("")
         axis.xaxis.set_ticks(x)
         axis.xaxis.set_ticklabels(x, rotation=x_label_rotation)
     return outputs_df
@@ -191,7 +191,7 @@ def plot_leg_duration(list_of_populations, axis=None):
         axis.bar(x, y)
         axis.plot()
         axis.set_title(title)
-        axis.xaxis.set_label("")
+        axis.xaxis.set_label_text("")
         axis.xaxis.set_ticks(x)
         axis.xaxis.set_ticklabels(x, rotation=x_label_rotation)
     return outputs_df