Javascript 墨卡托造成d3页空白
以下代码在本地系统上尝试脱机启动时呈现空白页。启动控制台时,我看到以下消息:Javascript 墨卡托造成d3页空白,javascript,d3.js,topojson,Javascript,D3.js,Topojson,以下代码在本地系统上尝试脱机启动时呈现空白页。启动控制台时,我看到以下消息: Uncaught TypeError: Cannot read property 'mercator' of undefined 可以看出,在Cloud9IDE上启动时工作良好 以下代码在本地客户端和Cloud9IDE上完全相同 <!DOCTYPE html> <meta charset="utf-8"> <style> body { font-family: "Helvet
Uncaught TypeError: Cannot read property 'mercator' of undefined
可以看出,在Cloud9IDE上启动时工作良好
以下代码在本地客户端和Cloud9IDE上完全相同
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
width: 960px;
height: 500px;
position: relative;
}
#canvas {
}
#canvas-svg {
}
.land {
fill: #222;
}
.boundary {
fill: none;
stroke: #fff;
stroke-width: 1px;
}
#tooltip-container {
position: absolute;
background-color: #fff;
color: #000;
padding: 10px;
border: 1px solid;
display: none;
}
.tooltip_key {
font-weight: bold;
}
.tooltip_value {
margin-left: 20px;
float: right;
}
</style>
<div id="tooltip-container"></div>
<div id="canvas-svg"></div>
<script src="d3.min.js"></script>
<script src="topojson.js"></script>
<script src="jquery.min.js"></script>
<script>
d3.csv("population.csv", function(err, data) {
var config = {"data0":"Country (or dependent territory)","data1":"Population",
"label0":"label 0","label1":"label 1","color0":"#99ccff","color1":"#0050A1",
"width":960,"height":960}
var width = config.width,
height = config.height;
var COLOR_COUNTS = 9;
function Interpolate(start, end, steps, count) {
var s = start,
e = end,
final = s + (((e - s) / steps) * count);
return Math.floor(final);
}
function Color(_r, _g, _b) {
var r, g, b;
var setColors = function(_r, _g, _b) {
r = _r;
g = _g;
b = _b;
};
setColors(_r, _g, _b);
this.getColors = function() {
var colors = {
r: r,
g: g,
b: b
};
return colors;
};
}
function hexToRgb(hex) {
var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
return result ? {
r: parseInt(result[1], 16),
g: parseInt(result[2], 16),
b: parseInt(result[3], 16)
} : null;
}
function valueFormat(d) {
if (d > 1000000000) {
return Math.round(d / 1000000000 * 10) / 10 + "B";
} else if (d > 1000000) {
return Math.round(d / 1000000 * 10) / 10 + "M";
} else if (d > 1000) {
return Math.round(d / 1000 * 10) / 10 + "K";
} else {
return d;
}
}
var COLOR_FIRST = config.color0, COLOR_LAST = config.color1;
var rgb = hexToRgb(COLOR_FIRST);
var COLOR_START = new Color(rgb.r, rgb.g, rgb.b);
rgb = hexToRgb(COLOR_LAST);
var COLOR_END = new Color(rgb.r, rgb.g, rgb.b);
var startColors = COLOR_START.getColors(),
endColors = COLOR_END.getColors();
var colors = [];
for (var i = 0; i < COLOR_COUNTS; i++) {
var r = Interpolate(startColors.r, endColors.r, COLOR_COUNTS, i);
var g = Interpolate(startColors.g, endColors.g, COLOR_COUNTS, i);
var b = Interpolate(startColors.b, endColors.b, COLOR_COUNTS, i);
colors.push(new Color(r, g, b));
}
var MAP_KEY = config.data0;
var MAP_VALUE = config.data1;
var projection = d3.geo.mercator()
.scale((width + 1) / 2 / Math.PI)
.translate([width / 2, height / 2])
.precision(.1);
var path = d3.geo.path()
.projection(projection);
var graticule = d3.geo.graticule();
var svg = d3.select("#canvas-svg").append("svg")
.attr("width", width)
.attr("height", height);
svg.append("path")
.datum(graticule)
.attr("class", "graticule")
.attr("d", path);
var valueHash = {};
function log10(val) {
return Math.log(val);
}
data.forEach(function(d) {
valueHash[d[MAP_KEY]] = +d[MAP_VALUE];
});
var quantize = d3.scale.quantize()
.domain([0, 1.0])
.range(d3.range(COLOR_COUNTS).map(function(i) { return i }));
quantize.domain([d3.min(data, function(d){
return (+d[MAP_VALUE]) }),
d3.max(data, function(d){
return (+d[MAP_VALUE]) })]);
d3.json("world-topo-min.json", function(error, world) {
var countries = topojson.feature(world, world.objects.countries).features;
svg.append("path")
.datum(graticule)
.attr("class", "choropleth")
.attr("d", path);
var g = svg.append("g");
g.append("path")
.datum({type: "LineString", coordinates: [[-180, 0], [-90, 0], [0, 0], [90, 0], [180, 0]]})
.attr("class", "equator")
.attr("d", path);
var country = g.selectAll(".country").data(countries);
country.enter().insert("path")
.attr("class", "country")
.attr("d", path)
.attr("id", function(d,i) { return d.id; })
.attr("title", function(d) { return d.properties.name; })
.style("fill", function(d) {
if (valueHash[d.properties.name]) {
var c = quantize((valueHash[d.properties.name]));
var color = colors[c].getColors();
return "rgb(" + color.r + "," + color.g +
"," + color.b + ")";
} else {
return "#ccc";
}
})
.on("mousemove", function(d) {
var html = "";
html += "<div class=\"tooltip_kv\">";
html += "<span class=\"tooltip_key\">";
html += d.properties.name;
html += "</span>";
html += "<span class=\"tooltip_value\">";
html += (valueHash[d.properties.name] ? valueFormat(valueHash[d.properties.name]) : "");
html += "";
html += "</span>";
html += "</div>";
$("#tooltip-container").html(html);
$(this).attr("fill-opacity", "0.8");
$("#tooltip-container").show();
var coordinates = d3.mouse(this);
var map_width = $('.choropleth')[0].getBoundingClientRect().width;
if (d3.event.pageX < map_width / 2) {
d3.select("#tooltip-container")
.style("top", (d3.event.layerY + 15) + "px")
.style("left", (d3.event.layerX + 15) + "px");
} else {
var tooltip_width = $("#tooltip-container").width();
d3.select("#tooltip-container")
.style("top", (d3.event.layerY + 15) + "px")
.style("left", (d3.event.layerX - tooltip_width - 30) + "px");
}
})
.on("mouseout", function() {
$(this).attr("fill-opacity", "1.0");
$("#tooltip-container").hide();
});
g.append("path")
.datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
.attr("class", "boundary")
.attr("d", path);
svg.attr("height", config.height * 2.2 / 3);
});
d3.select(self.frameElement).style("height", (height * 2.3 / 3) + "px");
});
</script>
身体{
字体系列:“Helvetica Neue”,Helvetica,Arial,无衬线;
宽度:960px;
高度:500px;
位置:相对位置;
}
#帆布{
}
#画布svg{
}
.土地{
填充:#222;
}
.边界{
填充:无;
冲程:#fff;
笔画宽度:1px;
}
#工具提示容器{
位置:绝对位置;
背景色:#fff;
颜色:#000;
填充:10px;
边框:1px实心;
显示:无;
}
.工具提示\u键{
字体大小:粗体;
}
.工具提示\u值{
左边距:20px;
浮动:对;
}
d3.csv(“population.csv”,函数(err,data){
变量配置={“数据0”:“国家(或附属领土)”,“数据1”:“人口”,
“标签0”:“标签0”,“标签1”:“标签1”,“颜色0”:“99ccff”,“颜色1”:“0050A1”,
“宽度”:960,“高度”:960}
var width=config.width,
高度=配置高度;
var COLOR_计数=9;
函数插值(开始、结束、步数、计数){
var s=开始,
e=结束,
最终=s+((e-s)/步数)*计数);
返回数学地板(最终);
}
函数颜色(_r,_g,_b){
var r,g,b;
var setColors=函数(_r,_g,_b){
r=\u r;
g=_g;
b=_b;
};
设置颜色(_r,_g,_b);
this.getColors=函数(){
变量颜色={
r:r,
g:g,
b:b
};
返回颜色;
};
}
函数hexToRgb(hex){
var result=/^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(十六进制);
返回结果{
r:parseInt(结果[1],16),
g:parseInt(结果[2],16),
b:parseInt(结果[3],16)
}:null;
}
函数值格式(d){
如果(d>100000000){
返回数学四舍五入(d/100000000*10)/10+“B”;
}否则,如果(d>1000000){
返回数学四舍五入(d/1000000*10)/10+“M”;
}否则,如果(d>1000){
返回数学四舍五入(d/1000*10)/10+“K”;
}否则{
返回d;
}
}
var COLOR\u FIRST=config.color0,COLOR\u LAST=config.color1;
var rgb=六角体GB(颜色优先);
var COLOR_START=新颜色(rgb.r、rgb.g、rgb.b);
rgb=hexToRgb(最后一个颜色);
var COLOR_END=新颜色(rgb.r、rgb.g、rgb.b);
var startColors=COLOR\u START.getColors(),
endColors=COLOR_END.getColors();
var颜色=[];
对于(变量i=0;i