Fix: The set_view_interval, set_data_interval and set_bounds methods …

…of Locators and Formatters (and their common base class, TickHelper) are removed. in matplotlib 3.7.0 https://matplotlib.org/stable/api/prev_api_changes/api_changes_3.7.0.html

backtrader/plot/locator.py

@@ -222,6 +222,20 @@ def get_locator(self, dmin, dmax):
             locator = MicrosecondLocator(interval, tz=self.tz)
 
         locator.set_axis(self.axis)
+
+        try:
+            # try for matplotlib < 3.6.0
+            locator.set_view_interval(*self.axis.get_view_interval())
+            locator.set_data_interval(*self.axis.get_data_interval())
+        except Exception as e:
+            try:
+                # try for matplotlib >= 3.6.0
+                self.axis.set_view_interval(*self.axis.get_view_interval())
+                self.axis.set_data_interval(*self.axis.get_data_interval())
+                locator.set_axis(self.axis)
+            except Exception as e:
+                print("Error:", e)
+
         return locator