--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/src/scale/bilinear.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,7 @@
+function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
+  var u = uninterpolate(domain[0], domain[1]),
+      i = interpolate(range[0], range[1]);
+  return function(x) {
+    return i(u(x));
+  };
+}