Merge pull request matplotlib#32024 from meeseeksmachine/auto-backport-of-pr-32013-on-v3.11.x

Backport PR matplotlib#32013 on branch v3.11.x (DOC: Document ax.transData and ax.transAxes)

Author: timhoffm

doc/api/axes_api.rst

@@ -39,6 +39,8 @@ Attributes
    Axes.viewLim
    Axes.dataLim
    Axes.spines
+   Axes.transAxes
+   Axes.transData
 
 Plotting
 ========

lib/matplotlib/axes/_base.py

@@ -580,6 +580,18 @@ class _AxesBase(martist.Artist):
     data area boundaries.
     """
 
+    transData: mtransforms.Transform
+    """
+    The transformation from data coordinates to display coordinates.
+    See  :ref:`transforms_tutorial`.
+    """
+
+    transAxes: mtransforms.Transform
+    """
+    The transformation from axes coordinates to display coordinates.
+    See  :ref:`transforms_tutorial`.
+    """
+
     xaxis: maxis.XAxis
     """
     The `.XAxis` instance.