Merge branch 'matplotlib:main' into hasans-matplotlib/main

hasanrashid · web-flow · commit 8b7f51c3bcd4 · 2023-01-29T22:33:05.000-05:00
diff --git a/examples/event_handling/cursor_demo.py b/examples/event_handling/cursor_demo.py
@@ -56,8 +56,8 @@ def on_mouse_move(self, event):
             self.set_cross_hair_visible(True)
             x, y = event.xdata, event.ydata
             # update the line positions
-            self.horizontal_line.set_ydata(y)
-            self.vertical_line.set_xdata(x)
+            self.horizontal_line.set_ydata([y])
+            self.vertical_line.set_xdata([x])
             self.text.set_text(f'x={x:1.2f}, y={y:1.2f}')
             self.ax.figure.canvas.draw()
 
@@ -132,8 +132,8 @@ def on_mouse_move(self, event):
             self.set_cross_hair_visible(True)
             # update the line positions
             x, y = event.xdata, event.ydata
-            self.horizontal_line.set_ydata(y)
-            self.vertical_line.set_xdata(x)
+            self.horizontal_line.set_ydata([y])
+            self.vertical_line.set_xdata([x])
             self.text.set_text(f'x={x:1.2f}, y={y:1.2f}')
 
             self.ax.figure.canvas.restore_region(self.background)
@@ -204,8 +204,8 @@ def on_mouse_move(self, event):
             x = self.x[index]
             y = self.y[index]
             # update the line positions
-            self.horizontal_line.set_ydata(y)
-            self.vertical_line.set_xdata(x)
+            self.horizontal_line.set_ydata([y])
+            self.vertical_line.set_xdata([x])
             self.text.set_text(f'x={x:1.2f}, y={y:1.2f}')
             self.ax.figure.canvas.draw()
 
diff --git a/lib/matplotlib/widgets.py b/lib/matplotlib/widgets.py
@@ -1873,8 +1873,8 @@ def __init__(self, targetfig, toolfig):
         # The last subplot, removed below, keeps space for the "Reset" button.
         for name, ax in zip(names, toolfig.subplots(len(names) + 1)):
             ax.set_navigate(False)
-            slider = Slider(ax, name,
-                            0, 1, getattr(targetfig.subplotpars, name))
+            slider = Slider(ax, name, 0, 1,
+                            valinit=getattr(targetfig.subplotpars, name))
             slider.on_changed(self._on_slider_changed)
             self._sliders.append(slider)
         toolfig.axes[-1].remove()
