From 5edebad3e677954ee0dd15b490f86b34c388da4c Mon Sep 17 00:00:00 2001
From: Jeremy Goecks <jgoecks@gwu.edu>
Date: Mon, 7 Apr 2014 12:21:43 -0400
Subject: [PATCH] Visualization client-side framework: use
 simpler/faster/boundary-condition insensitive calculation for extracting
 subsets of reference sequence data.

---
 static/scripts/viz/visualization.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/static/scripts/viz/visualization.js b/static/scripts/viz/visualization.js
index 8d8c79b6984..dbf099d0e2e 100644
--- a/static/scripts/viz/visualization.js
+++ b/static/scripts/viz/visualization.js
@@ -610,9 +610,8 @@ var GenomeDataManager = Cache.extend({
                 });
             },
             refseq: function(data, subregion) {
-                var seq_start = subregion.get('start') - entry.region.get('start'),
-                    seq_end = entry.data.length - ( entry.region.get('end') - subregion.get('end') );
-                return entry.data.slice(seq_start, seq_end);
+                var seq_start = subregion.get('start') - entry.region.get('start');
+                return entry.data.slice(seq_start, seq_start + subregion.length());
             }
         };