From 248f26deb7ecbceb470dff3a1f49eb4e940df3d3 Mon Sep 17 00:00:00 2001
From: Philipp Klaus <klaus@physik.uni-frankfurt.de>
Date: Fri, 25 Aug 2017 12:02:05 +0200
Subject: [PATCH] DASH: use d3.curveStepAfter for sparkline interpolation

Available interpolations include
(see <https://github.com/d3/d3-shape/blob/master/README.md#curves>):

* d3.curveLinear
* d3.curveMonotoneX
* d3.curveStepAfter

Maybe the appropriate interpolation should be specified for
every individual PV (part of the config file) in the future.
---
 python_suite/dashboard/static/js/sparkline.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/python_suite/dashboard/static/js/sparkline.js b/python_suite/dashboard/static/js/sparkline.js
index 6a0ba84..7a34139 100644
--- a/python_suite/dashboard/static/js/sparkline.js
+++ b/python_suite/dashboard/static/js/sparkline.js
@@ -77,6 +77,9 @@ function sparkline() {
 
     // Define the line
     var valueline = d3.line()
+      //.curve(d3.curveLinear)
+      //.curve(d3.curveMonotoneX)
+      .curve(d3.curveStepAfter)
       .defined(function (d) { return d[1] !== null; })
       .x(function (d) { return x(d[0]); })
       .y(function (d) { return y(d[1]); });
-- 
2.43.0