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您好我是d3js中的新成員,所以我無法在給定的餅圖代碼中使用mouseover事件...我有一個名爲chart的id,所以如何創建有些類是mouseover事件並顯示標籤?在餅圖中使用鼠標懸停並在d3 v3中顯示標籤js
這裏是我使用的繪製餅圖代碼:
var w = 300;
var h = 300;
var dataset = [
{"year":"2017-07-01","value":"5"},
{"year":"2017-07-02","value":"10"},
{"year":"2017-07-03","value":"15"},
{"year":"2017-07-04","value":"20"},
{"year":"2017-07-05","value":"25"},
{"year":"2017-07-06","value":"30"},
{"year":"2017-07-07","value":"35"},
{"year":"2017-07-08","value":"40"},
{"year":"2017-07-09","value":"45"},
{"year":"2017-07-10","value":"50"},
{"year":"2017-07-11","value":"55"},
{"year":"2017-07-12","value":"60"},
{"year":"2017-07-13","value":"65"},
{"year":"2017-07-14","value":"70"}
];
var outerRadius = w/2;
var innerRadius = 0;
var arc = d3.svg.arc()
.innerRadius(innerRadius)
.outerRadius(outerRadius);
var pie = d3.layout.pie()
.value(function(d) {
return d.value;
});
var color = d3.scale.category20();
var svg = d3.select("#chart")
.append("svg")
.attr("width", w)
.attr("height", h);
var arcs = svg.selectAll("g.arc")
.data(pie(dataset))
.enter()
.append("g")
.attr("class", "arc")
.attr("transform", "translate(" + outerRadius + "," + outerRadius + ")");
arcs.append("path")
.attr("fill", function(d, i) {
return color(i);
})
.attr("d", arc);
arcs.append("text")
.attr("transform", function(d) {
return "translate(" + arc.centroid(d) + ")";
})
.attr("text-anchor", "middle")
.text(function(d) {
return d.value;
});
你想展示什麼標籤?餡餅中的切片已具有的值?或另一個標籤?當用戶將鼠標懸停在切片上或用戶懸停在整個餅圖上時?你看,要得到適當的幫助,你必須準確解釋你的想法。 *「我想顯示一個標籤」*很含糊。 –
我必須在鼠標懸停時顯示年值 – kunal
嗯,我只是放棄。祝你好運。 –