0
我是d3.js
的新手,但我可以繪製topojson文件,居中並計算比例(顯然使用幾個問題和stackoverflow的答案)。現在,我想要更改顯示的topojson
,我的意思是,刪除實際並加載一個新的並顯示它。D3.js:繪製一個新的topojson並刪除舊的
我可以加載新的,但不顯示。你能幫我解決錯誤嗎?
<!DOCTYPE html>
<meta charset="utf-8">
<style>
rect {
fill: none;
pointer-events: all;
}
.feature {
fill: #ccc;
cursor: pointer;
}
.feature.active {
fill: orange;
}
.mesh {
fill: none;
stroke: #fff;
stroke-width: .5px;
stroke-linejoin: round;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/topojson.v1.min.js"></script>
<script>
var x = d3.scale.linear()
.domain([0, width])
.range([0, width]);
var y = d3.scale.linear()
.domain([0, height])
.range([height, 0]);
var width = 960,
height = 500,
active;
var svg = d3.select("body")
.append("svg")
.attr("width", width)
.attr("height", height)
.on("click", reset);
var g = svg.append("g");
var projection = d3.geo.albers()
.scale(1)
.translate([0,0]);
var path = d3.geo.path()
.projection(projection);
createMap("aguascalientes.topojson");
function createMap(topojsonFile) {
d3.json(topojsonFile, function(error, tj) {
console.log(tj);
for(key in tj.objects) { features = tj.objects[key]; }
var estados = topojson.feature(tj, features);
var b = path.bounds(estados);
var s = 0.95/ Math.max((b[1][0] - b[0][0])/width, (b[1][1] - b[0][1])/height);
var t = [(width - s * (b[1][0] + b[0][0]))/2, (height - s * (b[1][1] + b[0][1]))/2];
projection
.scale(s)
.translate(t);
g.selectAll("path")
.data(topojson.feature(tj, features).features)
.enter().append("path")
.attr("d", path)
.attr("class", "feature")
.on("click", click);
g.append("path")
.datum(topojson.mesh(tj, features, function(a,b) { return a !== b; }))
.attr("class", "mesh")
.attr("d", path);
});
}
function updateData() {
console.log("Update");
svg = d3.select("body").transition();
createMap("estados.topojson");
}
</script>
<body>
<div id="option">
<input name="updateButton"
type="button"
value="Update"
onclick="updateData()"
/>
</div>
</body>
在此先感謝
優良的售後服務,即加載數據後!我只是做了你告訴我的一切都好! (我也刪除了代碼'svg = d3.select(「body」)。transition();'並將'var path = ...'和'var projection = ...'移到'createMap )') – nanounanue