From e6dd37b15d7c19a5c18dbc0678d4e79486a24966 Mon Sep 17 00:00:00 2001
From: Tim Hoffmann <2836374+timhoffm@users.noreply.github.com>
Date: Thu, 13 Oct 2022 12:40:51 +0200
Subject: [PATCH] Backport PR #24149: FIX: handle input to ax.bar that is all
nan
---
lib/matplotlib/axes/_axes.py | 8 ++++++++
lib/matplotlib/tests/test_axes.py | 13 +++++++++++++
2 files changed, 21 insertions(+)
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
index e5e34c91257d..d8ac2bb829f3 100644
--- a/lib/matplotlib/axes/_axes.py
+++ b/lib/matplotlib/axes/_axes.py
@@ -2182,11 +2182,19 @@ def _convert_dx(dx, x0, xconv, convert):
x0 = cbook._safe_first_finite(x0)
except (TypeError, IndexError, KeyError):
pass
+ except StopIteration:
+ # this means we found no finite element, fall back to first
+ # element unconditionally
+ x0 = cbook.safe_first_element(x0)
try:
x = cbook._safe_first_finite(xconv)
except (TypeError, IndexError, KeyError):
x = xconv
+ except StopIteration:
+ # this means we found no finite element, fall back to first
+ # element unconditionally
+ x = cbook.safe_first_element(xconv)
delist = False
if not np.iterable(dx):
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
index d6d44bcdb283..c238009b0be1 100644
--- a/lib/matplotlib/tests/test_axes.py
+++ b/lib/matplotlib/tests/test_axes.py
@@ -8144,3 +8144,16 @@ def test_bar_leading_nan():
for b in rest:
assert np.isfinite(b.xy).all()
assert np.isfinite(b.get_width())
+
+
+@check_figures_equal(extensions=["png"])
+def test_bar_all_nan(fig_test, fig_ref):
+ mpl.style.use("mpl20")
+ ax_test = fig_test.subplots()
+ ax_ref = fig_ref.subplots()
+
+ ax_test.bar([np.nan], [np.nan])
+ ax_test.bar([1], [1])
+
+ ax_ref.bar([1], [1]).remove()
+ ax_ref.bar([1], [1])
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