我正在尝试渲染类似于本区块文章http://bl.ocks.org/jefffriesen/6892860中的美国邮政编码地图。但是，我们正在使用d3 v5和topojson 2来渲染我们的叶绿体。我尝试使用上面列出的文章中的相同json文件，并按照本文https://medium.com/@mbostock/command-line-cartography-part-1-897aa8f8ca2c中的描述从美国人口普查shapefile创建自己的TopoJSON
当我的路径元素呈现时，它们都以负数开头。
例如
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有人知道要遵循哪些步骤才能将美国人口普查形状文件中的邮政编码呈现为D3整体色。
http://www2.census.gov/geo/tiger/GENZ2017/shp/cb_2017_us_zcta510_500k.zip
function Initialize(){
var promises = [];
promises.push(d3.json("https://d3js.org/us-10m.v1.json"))
promises.push(d3.json(".\\data\\cb_2017_us_zcta510_500k.json"))
Promise.all(promises).then(function(values){
drawTheMap(values[0], values[1]);
}); }
function drawTheMap(us,zip){
// allow zooming from 1x to 5x
var zooming = d3.zoom()
.scaleExtent([1, 5])
.on("zoom", function () {
svg.attr("transform", d3.event.transform)
})
var svg = d3.select("#map")
.append("svg")
.attr("width", 1200)
.attr("height", 800)
.call(zooming)
.append("g");
var path = d3.geoPath();
var countyFeatures = topojson.feature(us, us.objects.counties).features;
var stateFeatures = topojson.mesh(us, us.objects.states, function(a, b) { return a !== b; })
var zipFeature = topojson.feature(zip, zip.cb_2017_us_zcta510_500k).features;
// var usFeature = topojson.feature(us, us.objects.land);
svg.append("g")
.attr("class", "states")
.selectAll("path")
.data(topojson.feature(us, us.objects.states).features)
.enter().append("path")
.attr("d", path);
// TODO: Implement state borders being white to help differentiate
// between two states
// svg.append("path")
// .attr("class", "state-borders")
// .attr("d", path(topojson.mesh(us, us.objects.states, function(a, b) { return a !== b; })))
// .attr("fill", "none")
// .attr("stroke", "white")
// .attr("stroke-linejoin", "round")
// .attr("d", path);
var div = d3.select("body").append("div")
.attr("class", "tooltip");
svg.append("g")
.selectAll("path")
.data(zipFeature)
.enter().append("path")
.attr("d", path)
.on("mouseover", d => {
div
.transition()
.duration(200)
.style('opacity', 0.9);
div
.html(d.id)
.style('left', d3.event.pageX + 'px')
.style('top', d3.event.pageY - 28 + 'px');
})
.on('mouseout', () => {
div
.transition()
.duration(500)
.style('opacity', 0);
})
.on('click', function(d){
GetZipCodeData(d.id)
});
}
答案 0 :(得分：0)
.data(topojson.feature(us, us.objects.states).features)
尝试使用县。