diff --git a/htdocs/samples/point_r.html b/htdocs/samples/point_r.html
new file mode 100644
index 0000000..46ee3ec
--- /dev/null
+++ b/htdocs/samples/point_r.html
@@ -0,0 +1,28 @@
+<html>
+  <head>
+    <link rel="stylesheet" type="text/css" href="/css/c3.css">
+  </head>
+  <body>
+    <div id="chart"></div>
+
+    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
+    <script src="/js/c3.min.js"></script>
+    <script>
+      var chart = c3.generate({
+        bindto: '#chart',
+        data: {
+          columns: [
+            ['data1', 30, 200, 100, 400, 150, 250],
+            ['data2', 130, 300, 200, 600, 250, 150]
+          ],
+        },
+        point: {
+//          r: 10
+          r: function (d) {
+            return d.id === 'data2' ? 10 : 2.5;
+          }
+        }
+      });
+    </script>
+  </body>
+</html>
