fix: prevent duplicate flow hint markers on comparison axes

src/mplhep/comparison_plotters.py

@@ -191,16 +191,6 @@ def hists(
 
         ax_comparison.set_xticks(filtered_ticks)
         ax_comparison.set_xticklabels(tick_labels)
-    else:
-        # For other flow options, control label visibility and regenerate labels
-        ax_main.tick_params(labelbottom=False)
-        ax_comparison.tick_params(labelbottom=True)
-        # Explicitly regenerate tick labels on the comparison axis
-        # (they may have been set to empty strings during plotting)
-        tick_positions = ax_comparison.get_xticks()
-        ax_comparison.set_xticks(tick_positions)
-        ax_comparison.set_xticklabels([f"{tick:g}" for tick in tick_positions])
-
     return fig, ax_main, ax_comparison
 
 
@@ -859,14 +849,4 @@ def sum_components(x):
 
         ax_comparison.set_xticks(filtered_ticks)
         ax_comparison.set_xticklabels(tick_labels)
-    else:
-        # For other flow options, control label visibility and regenerate labels
-        ax_main.tick_params(labelbottom=False)
-        ax_comparison.tick_params(labelbottom=True)
-        # Explicitly regenerate tick labels on the comparison axis
-        # (they may have been set to empty strings during plotting)
-        tick_positions = ax_comparison.get_xticks()
-        ax_comparison.set_xticks(tick_positions)
-        ax_comparison.set_xticklabels([f"{tick:g}" for tick in tick_positions])
-
     return fig, ax_main, ax_comparison

src/mplhep/plot.py

@@ -718,43 +718,36 @@ def iterable_not_string(arg):
         msg = "No figure found"
         raise ValueError(msg)
     if flow == "hint":
-        # Get all shared x-axes to draw markers on all of them
-        shared_axes = ax.get_shared_x_axes().get_siblings(ax)
-        shared_axes = [
-            _ax for _ax in shared_axes if _ax.get_position().x0 == ax.get_position().x0
-        ]
-
         _marker_size = (
             30
             * ax.get_window_extent().transformed(fig.dpi_scale_trans.inverted()).width
         )
 
-        # Draw markers on all shared axes
-        for _ax in shared_axes:
-            if underflow > 0.0:
-                _ax.scatter(
-                    final_bins[0],
-                    0,
-                    _marker_size,
-                    marker=align_marker("<", halign="right"),
-                    edgecolor="black",
-                    zorder=5,
-                    clip_on=False,
-                    facecolor="white",
-                    transform=_ax.get_xaxis_transform(),
-                )
-            if overflow > 0.0:
-                _ax.scatter(
-                    final_bins[-1],
-                    0,
-                    _marker_size,
-                    marker=align_marker(">", halign="left"),
-                    edgecolor="black",
-                    zorder=5,
-                    clip_on=False,
-                    facecolor="white",
-                    transform=_ax.get_xaxis_transform(),
-                )
+        # Draw markers only on the current axis
+        if underflow > 0.0:
+            ax.scatter(
+                final_bins[0],
+                0,
+                _marker_size,
+                marker=align_marker("<", halign="right"),
+                edgecolor="black",
+                zorder=5,
+                clip_on=False,
+                facecolor="white",
+                transform=ax.get_xaxis_transform(),
+            )
+        if overflow > 0.0:
+            ax.scatter(
+                final_bins[-1],
+                0,
+                _marker_size,
+                marker=align_marker(">", halign="left"),
+                edgecolor="black",
+                zorder=5,
+                clip_on=False,
+                facecolor="white",
+                transform=ax.get_xaxis_transform(),
+            )
 
     elif flow == "show":
         lw = ax.spines["bottom"].get_linewidth()

tests/test_mock.py

@@ -56,7 +56,7 @@ def test_simple(mock_matplotlib):
     bins = [0, 1, 2, 3]
     mh.histplot(h, bins, yerr=True, label="X", ax=ax)
 
-    assert len(ax.mock_calls) == 17  # Updated count due to shared axes functionality
+    assert len(ax.mock_calls) == 13  # Updated count after removing shared axes iteration
 
     ax.stairs.assert_called_once_with(
         values=approx([1.0, 3.0, 2.0]),
@@ -101,15 +101,15 @@ def test_histplot_real(mock_matplotlib):
     mh.histplot([a, b, c], bins=bins, ax=ax, yerr=True, label=["MC1", "MC2", "Data"])
     ax.legend()
     ax.set_title("Raw")
-    assert len(ax.mock_calls) == 31  # Updated count due to shared axes functionality
+    assert len(ax.mock_calls) == 27  # Updated count after removing shared axes iteration
 
     ax.reset_mock()
 
     mh.histplot([a, b], bins=bins, ax=ax, stack=True, label=["MC1", "MC2"])
     mh.histplot([c], bins=bins, ax=ax, yerr=True, histtype="errorbar", label="Data")
     ax.legend()
     ax.set_title("Data/MC")
-    assert len(ax.mock_calls) == 28  # Updated count due to shared axes functionality
+    assert len(ax.mock_calls) == 20  # Updated count after removing shared axes iteration
     ax.reset_mock()
 
     mh.histplot(
@@ -126,7 +126,7 @@ def test_histplot_real(mock_matplotlib):
     )
     ax.legend()
     ax.set_title("Data/MC binwnorm")
-    assert len(ax.mock_calls) == 28  # Updated count due to shared axes functionality
+    assert len(ax.mock_calls) == 20  # Updated count after removing shared axes iteration
     ax.reset_mock()
 
     mh.histplot(
@@ -143,4 +143,4 @@ def test_histplot_real(mock_matplotlib):
     )
     ax.legend()
     ax.set_title("Data/MC Density")
-    assert len(ax.mock_calls) == 28  # Updated count due to shared axes functionality
+    assert len(ax.mock_calls) == 20  # Updated count after removing shared axes iteration