From 657f198cdc93dd8121aff5e5dfb1448a64795bd6 Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Sat, 18 Jul 2015 10:26:47 +0200
Subject: [PATCH] gui: display '---' on failed number result

---
 artiq/gui/displays.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/artiq/gui/displays.py b/artiq/gui/displays.py
index a29e42526..ca2407871 100644
--- a/artiq/gui/displays.py
+++ b/artiq/gui/displays.py
@@ -64,7 +64,7 @@ class NumberDisplay(dockarea.Dock):
         try:
             n = float(data[result])
         except:
-            n = 0.0
+            n = "---"
         self.number.display(n)