Merge pull request #19696 from meeseeksmachine/auto-backport-of-pr-19665-on-v3.4.x

QuLogic · web-flow · commit 736ac0c10f5e · 2021-03-12T21:36:08.000-05:00
Backport PR #19665 on branch v3.4.x (Changed FormatStrFormatter documentation to include how to get unicode minus)
diff --git a/lib/matplotlib/ticker.py b/lib/matplotlib/ticker.py
@@ -411,6 +411,10 @@ class FormatStrFormatter(Formatter):
 
     The format string should have a single variable format (%) in it.
     It will be applied to the value (not the position) of the tick.
+
+    Negative numeric values will use a dash not a unicode minus,
+    use mathtext to get a unicode minus by wrappping the format specifier
+    with $ (e.g. "$%g$").
     """
     def __init__(self, fmt):
         self.fmt = fmt
