Backport PR #24069: Clarification of marker size in scatter

oscargus · meeseeksmachine · commit 9ab4b504695b · 2022-10-02T10:22:01.000Z
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -4402,7 +4402,7 @@ def scatter(self, x, y, s=None, c=None, marker=None, cmap=None, norm=None,
             The data positions.
 
         s : float or array-like, shape (n, ), optional
-            The marker size in points**2.
+            The marker size in points**2 (typographic points are 1/72 in.).
             Default is ``rcParams['lines.markersize'] ** 2``.
 
         c : array-like or list of colors or color, optional
