--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/src/scale/sqrt.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,3 @@
+d3.scale.sqrt = function() {
+  return d3.scale.pow().exponent(.5);
+};