From 203e351cefb6b9956308cb5265fe76e36ab7c7c5 Mon Sep 17 00:00:00 2001
From: Simon Christ <SimonChrist@gmx.de>
Date: Mon, 9 Dec 2019 11:17:37 +0100
Subject: [PATCH] fix scalar ribbon

---
 src/backends/pgfplotsx.jl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/backends/pgfplotsx.jl b/src/backends/pgfplotsx.jl
index 6578ff0f..7ff357f1 100644
--- a/src/backends/pgfplotsx.jl
+++ b/src/backends/pgfplotsx.jl
@@ -624,6 +624,8 @@ function pgfx_add_ribbons!( axis, series, segment_plot, series_func, series_inde
         ribbon_ym = repeat(ribbon_ym, outer = ribbon_nm)
         ribbon_np = length(opt[:y]) ÷ length(ribbon_yp)
         ribbon_yp = repeat(ribbon_yp, outer = ribbon_np)
+    else
+        ribbon_yp = ribbon_ym = ribbon_y
     end
     # upper ribbon
     rib_uuid = uuid4()