让我们制作一张地图 Topojson 没有出现 - 没有错误消息但没有任何反应

Let's make a map Topojson doesn't appear - no error msgs but nothing happens

我想使用 D3 绘制巴西地图(州边界),但我失败了。该地图采用 Topojson 格式(它是 here) and I'm following Mike Bostock's tutorial. I can replicate the tutorial results exactly when plotting the UK (map here),但是当我尝试绘制巴西时没有任何反应 - JavaScript 控制台中没有错误消息。

这是我的代码:

<!DOCTYPE html>
<meta charset="utf-8">
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/topojson.v1.min.js"></script>
<script>

var width = 960,
    height = 1160;

var projection = d3.geo.albers()
    .center([0, 55.4])
    .rotate([4.4, 0])
    .parallels([50, 60])
    .scale(1200 * 5)
    .translate([width / 2, height / 2]);

var path = d3.geo.path()
    .projection(projection);

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

/*
PLOTTING THE UK WORKS
d3.json("uk.json", function(error, uk) {
  console.log(uk)
  svg.append("path")
      .datum(topojson.feature(uk, uk.objects.subunits))
      .attr("d", path);
});
*/

/* PLOTTING BRAZIL DOESN'T WORK */
d3.json("br-states.json", function(error, uf) {
  console.log(uf)
  svg.append("path")
      .datum(topojson.feature(uf, uf.objects.states))
      .attr("d", path);
});

</script>
</body>

以下必须根据您的需要进行更改。

 // England viewport
var projection = d3.geo.albers()
    .center([0, 55.4])
    .rotate([4.4, 0])
    .parallels([50, 60])
    .scale(1200 * 5)
    .translate([width / 2, height / 2]);

目前正在放大英格兰地区:)

诸如此类:

// somewhere in South america
var projection = d3.geo.mercator()   // albers may fails for Brazil
    .center([-40, -30])          // country center
    .rotate([4.4, 0])               //???? Check the api and edit for Brazil
    .parallels([0, -60])          // ???
    .scale(400)                     // smaller num = smaller Earth
    .translate([width / 2, height / 2]);  // topojson data is initially centered aroun x:0,y:0. This put back into the viewbox