From f2a9580d5c8428b80de918c5f84906cc0ea897c9 Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Wed, 6 Apr 2022 17:10:19 -0400
Subject: [PATCH] Guard against zero px width

---
 piker/ui/_curve.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/piker/ui/_curve.py b/piker/ui/_curve.py
index 0e6f8211..00a4ca7a 100644
--- a/piker/ui/_curve.py
+++ b/piker/ui/_curve.py
@@ -408,7 +408,7 @@ class FastAppendCurve(pg.GraphicsObject):
 
                 self._in_ds = False
 
-            elif should_ds:
+            elif should_ds and px_width:
                 x_out, y_out = self.downsample(
                     x_out,
                     y_out,