D3为geojson添加路径但不添加topojson

Question

我正在尝试使用D3显示地图。我有一个geoJSON文件和topoJSON文件相同的地图。当我加载geoJSON文件时，它会在页面上呈现，而<path>标记会被d=...填充。但是当我更改url以获取topoJSON文件时，<path>标记仍为空，即使我将其余代码保持不变。 svg仍然使用topoJSON请求呈现，但没有任何内容出现。有关可能发生的事情的任何想法？

我的代码：

var width = 550;
var height = 570;

var arizonaProjection = d3.geoMercator()
  .center([-111.6602, 34.2744])
  .scale(4500)
  .translate([width/2, height/2]);

var path = d3.geoPath()
  .projection(arizonaProjection);

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

d3.json("geojson/Arizona.geojson", function(error, Arizona) {
  svg.append("path")
    .attr("d", path(Arizona));
  console.log(path);
});

文件geojson/Arizona.geojson存储在我本地服务器的不同目录中，topojson/Arizona.json中的topojson文件也是如此。

topoJSON的示例：

"transform":{
  "scale":[0.00003998538143372804,0.000031941344085415994],
  "translate":[-114.81659,31.33218]
},
"objects":{
  "Arizona_88_to_89":{
    "type":"GeometryCollection",
    "geometries":[
      {
      "arcs":[[0,1,2,3,4,5]],
      "type":"Polygon",
      "properties":{
        "startcong":"88",
        "district":"1",
        "statename":"Arizona",
        "member":{
          "88":{"7845":{"party":"Republican","name":"Rhodes, John Jacob","district":"1"}},
      "89":{"7845":{"party":"Republican","name":"Rhodes, John Jacob","district":"1"}}
    },
    "endcong":"89",
    "id":"004088089001"
  }
    },{
      "arcs":[[6,-5,7,-3,8,-1,9,10,11,12]],
      "type":"Polygon",
      "properties":{
        "startcong":"88",
        "district":"2",
        "statename":"Arizona",
        "member":{
          "88":{"10566":{"party":"Democrat","name":"Udall, Morris K.","district":"2"}},
          "89":{"10566":{"party":"Democrat","name":"Udall, Morris K.","district":"2"}}
        },
        "endcong":"89",
        "id":"004088089002"
      }
    },{
      "arcs":[[-12,13,-10,-6,-7,14]],
      "type":"Polygon",
      "properties":{
        "startcong":"88",
        "district":"3",
        "statename":"Arizona",
        "member":{
          "88":{"10623":{"party":"Democrat","name":"Senner, Georg F., Jr.","district":"3"}},
          "89":{"10623":{"party":"Democrat","name":"Senner, Georg F., Jr.","district":"3"}}
        },
        "endcong":"89",
        "id":"004088089003"
      }
    }
    ]

}

geoJSON的示例：

{"type": "FeatureCollection", "features": [{"geometry": {"type": "MultiPolygon", "coordinates": [[[[-112.75515, 33.99991], [-112.75073, 33.99984], [-112.75034, 33.99992], [-112.74655, 33.99991], [-112.74509, 33.9999], [-112.7442, 33.9999], [-112.74395, 33.9999], [-112.74346, 33.99977], [-112.74331, 33.99973], [-112.74262, 33.99955],