From f34fb193d167759b8b858b6f1f834804ceb927f4 Mon Sep 17 00:00:00 2001
From: Christian Kalmar <christian.kalmar@gmail.com>
Date: Sat, 2 Aug 2014 12:42:05 +0200
Subject: [PATCH] allow for tickValues to be calculated dynamically via a
 function by providing the current domain

---
 c3.js | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/c3.js b/c3.js
index 0962045..7207a5d 100644
--- a/c3.js
+++ b/c3.js
@@ -5558,8 +5558,15 @@
             return axis;
         };
         axis.tickValues = function (x) {
-            if (!arguments.length) { return tickValues; }
-            tickValues = x;
+            if (typeof x === 'function') {
+                tickValues = function() {
+                    return x(scale.domain());
+                }
+            }
+            else {
+                if (!arguments.length) { return tickValues; }
+                tickValues = x;
+            }
             return axis;
         };
         return axis;