Tweak cursor coordinates display format.

anntzer · anntzer · commit 6e62bc8661a9 · 2023-08-13T17:13:35.000+02:00
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -3914,27 +3914,24 @@ def format_coord(self, x, y):
         """Return a format string formatting the *x*, *y* coordinates."""
         twins = self._twinned_axes.get_siblings(self)
         if len(twins) == 1:
-            return "x={} y={}".format(
+            return "(x, y) = ({}, {})".format(
                 "???" if x is None else self.format_xdata(x),
                 "???" if y is None else self.format_ydata(y))
-        x_twins = []
-        y_twins = []
+        screen_xy = self.transData.transform((x, y))
+        xy_strs = []
         # Retrieve twins in the order of self.figure.axes to sort tied zorders (which is
         # the common case) by the order in which they are added to the figure.
-        for ax in self.figure.axes:
-            if ax in twins:
-                if ax is self or ax._sharex is self or self._sharex is ax:
-                    x_twins.append(ax)
-                if ax is self or ax._sharey is self or self._sharey is ax:
-                    y_twins.append(ax)
-        screen_xy = self.transData.transform((x, y))
-        return "x={} y={}".format(
-            " | ".join(
-                ax.format_xdata(ax.transData.inverted().transform(screen_xy)[0])
-                for ax in sorted(y_twins, key=attrgetter("zorder"))),
-            " | ".join(
-                ax.format_xdata(ax.transData.inverted().transform(screen_xy)[1])
-                for ax in sorted(x_twins, key=attrgetter("zorder"))))
+        for ax in sorted(
+            [ax for ax in self.figure.axes if (
+                ax in twins and (
+                    ax is self
+                    or ax._sharex is self or self._sharex is ax
+                    or ax._sharey is self or self._sharey is ax))],
+                key=attrgetter("zorder")):
+            data_x, data_y = ax.transData.inverted().transform(screen_xy)
+            xy_strs.append(
+                "({}, {})".format(ax.format_xdata(data_x), ax.format_ydata(data_y)))
+        return "(x, y) = {}".format(" | ".join(xy_strs))
 
     def minorticks_on(self):
         """
