sunlight plots axis labels

openskistats/plot.py

@@ -320,18 +320,34 @@ def _add_polar_y_ticks(
     arc_center: float = 225.0,
     arc_width: float = 10.0,
     arc_color: str = "white",
+    title: str | None = None,
 ) -> None:
+    """Add radial ticks and optional title to polar plot.
+
+    Parameters
+    ----------
+    ax : PolarAxes
+        The matplotlib polar axes to add ticks to
+    arc_center : float
+        Center angle in degrees for the tick arcs
+    arc_width : float
+        Width of the tick arcs in degrees
+    arc_color : str
+        Color for the ticks and labels
+    title : str | None
+        Optional title for the radial axis
+    """
     # y-tick labeling
     y_ticks = np.arange(0, 91, 10)
     ax.set_yticks(y_ticks)
-    # ax.tick_params(axis="y", which="major", length=5, width=1)
     ax.set_yticklabels(
         [f"{r}°" if r in {0, 90} else "" for r in y_ticks],
         rotation=0,
         fontsize=7,
         color=arc_color,
     )
     ax.set_rlabel_position(arc_center)
+
     # Draw custom radial arcs for y-ticks
     for radius in y_ticks:
         theta_start = np.deg2rad(arc_center - arc_width / 2)
@@ -345,6 +361,19 @@ def _add_polar_y_ticks(
         )
     ax.set_rlim(0, 90)
 
+    # Add radial axis title if provided
+    if title:
+        ax.text(
+            x=np.deg2rad(270),
+            y=45,
+            s=title,
+            rotation=0,
+            color=arc_color,
+            fontsize=10,
+            ha="center",
+            va="center",
+        )
+
 
 def subplot_orientations(
     groups_pl: pl.DataFrame,

openskistats/sunlight.py

@@ -418,7 +418,13 @@ def _setup_polar_plot(self, ax: plt.Axes, colorbar: bool = True) -> Colorbar | N
 
         from openskistats.plot import _add_polar_y_ticks
 
-        _add_polar_y_ticks(ax=ax)
+        _add_polar_y_ticks(
+            ax=ax,
+            arc_center=315,
+            arc_width=10,
+            arc_color="white",
+            title="Slope" if isinstance(self, SlopeByBearingPlots) else "Latitude",
+        )
 
         cb = None
         if colorbar:
@@ -616,7 +622,7 @@ def get_grids(
 def create_combined_solar_plots() -> plt.Figure:
     """Create a combined figure with multiple solar plots arranged in a 2x3 grid."""
     # Create main figure with two subfigures side by side
-    fig = plt.figure(figsize=(17, 10), constrained_layout=True)
+    fig = plt.figure(figsize=(9.5, 5), constrained_layout=True)
     subfigs = fig.subfigures(nrows=1, ncols=2, width_ratios=[2, 1])
 
     # Left subfigure for instant irradiance plots (4 plots)
@@ -652,20 +658,20 @@ def create_combined_solar_plots() -> plt.Figure:
     _, mesh1 = plotters[0].plot(fig=fig, ax=ax1, vmax=max_value_instant)
     ax1.set_title("Winter Solstice Morning")
     _, mesh2 = plotters[1].plot(fig=fig, ax=ax2, vmax=max_value_instant)
-    ax2.set_title("Season Close Afternoon")
+    ax2.set_title("Closing Day Afternoon")
     _, mesh4 = plotters[3].plot(fig=fig, ax=ax4, vmax=max_value_instant)
     _, mesh5 = plotters[4].plot(fig=fig, ax=ax5, vmax=max_value_instant)
 
     # Plot season average plots
     _, mesh3 = plotters[2].plot(fig=fig, ax=ax3, vmax=max_value_season)
-    ax3.set_title("Season Average")
+    ax3.set_title("Entire Season")
     _, mesh6 = plotters[5].plot(fig=fig, ax=ax6, vmax=max_value_season)
 
     # Add colorbars to each subfigure
     subfig_instant.colorbar(
         mesh1,
         ax=[ax1, ax2, ax4, ax5],
-        label="Instant Irradiance (W/m²)",
+        label="Instantaneous Irradiance (W/m²)",
         location="right",
         pad=0.05,
         aspect=40,
@@ -674,7 +680,7 @@ def create_combined_solar_plots() -> plt.Figure:
     subfig_season.colorbar(
         mesh3,
         ax=[ax3, ax6],
-        label="Daily Irradiation (kWh/m²)",
+        label="Average Daily Irradiation (kW/m²/day)",
         location="right",
         pad=0.05,
         aspect=40,