From b8ab3ad3ef7379ed50cbdbf9feb46ed0bbd1b04d Mon Sep 17 00:00:00 2001
From: Jason Davies <jason@jasondavies.com>
Date: Thu, 13 Dec 2012 10:57:38 +0000
Subject: [PATCH] Benchmark U.S. counties.

This is useful to see how fast we can process polygons that don't
intersect with the clip edge.
---
 test/geo/benchmark.js | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/test/geo/benchmark.js b/test/geo/benchmark.js
index 955f76fa..08468fdf 100644
--- a/test/geo/benchmark.js
+++ b/test/geo/benchmark.js
@@ -1,14 +1,27 @@
 require("../env");
 
+var fs = require("fs");
+
 var formatNumber = d3.format(",.02r"),
     projection = d3.geo.stereographic().clipAngle(150),
     path = d3.geo.path().projection(projection),
     graticule = d3.geo.graticule().step([1, 1]),
     circle = d3.geo.circle().angle(30),
-    n = 10;
+    n = 10,
+    o,
+    then;
 
-var o = graticule(),
-    then = Date.now();
+o = JSON.parse(fs.readFileSync("./examples/data/us-counties.json"));
+then = Date.now();
+
+for (var i = 0, k = 0; i < n; i++, k++) {
+  path(o);
+}
+
+console.log("U.S. counties: " + formatNumber((Date.now() - then) / k) + "ms/op.");
+
+o = graticule();
+then = Date.now();
 
 for (var i = 0, k = 0; i < n; i++, k++) {
   path(o);