diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/src/core/median.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/src/core/median.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,5 @@
+d3.median = function(array, f) {
+  if (arguments.length > 1) array = array.map(f);
+  array = array.filter(d3_number);
+  return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined;
+};