数据更改时,D3将鼠标悬停在更改上

时间:2013-04-28 11:45:41

标签: javascript d3.js

我有这个D3 SVG条形图:

http://tinyurl.com/cul7oyg 
右下角的

(你必须向下滚动)。您可以毫无问题地悬停在酒吧上方。但是,在点击左上方框底部的链接后,我创建了一个包含新数据的新条形图。鼠标悬停现在仅在将鼠标悬停在条形之间的线上时起作用。我所做的就是使用以下方法清空div的内容:(d3.select(“#barchart”)。html(“”)然后将一个新的较小数据集传递给该函数。数据是一个数组对象。

function generateBarForData(data) {
var margin = {top: 30, right: 10, bottom: 10, left: 10},
    width = 750 - margin.left - margin.right,
    height = data.length * 20 //500 - margin.top - margin.bottom;

var x = d3.scale.linear()
    .range([0, width*.85])

//chart1.x =x
//chart1.y = y

var y = d3.scale.ordinal()
    .rangeRoundBands([0, height], 0);

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("top");

var svg = d3.select("#barchart").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

//d3.tsv("data.tsv", type, function(error, data) {
  x.domain(d3.extent(data, function(d) { return +d.netdonations_over_population_to_gdppercap_percentage; })).nice();
  y.domain(data.map(function(d) { return d.name; }));

  bar = svg.selectAll(".bar")
      .data(data)
    .enter().append("rect")
      .attr("class", function(d) { return +d.netdonations_over_population_to_gdppercap_percentage <= 0 ? ("bar negative " + d.name) : ("bar positive " + d.name); })
      .attr("x", function(d) { return x(Math.min(0, +d.netdonations_over_population_to_gdppercap_percentage)); })
      .attr("y", function(d) { return y(d.name); })
      .attr("width", function(d) { return Math.abs(x(+d.netdonations_over_population_to_gdppercap_percentage) - x(0)); })
      .attr("height", y.rangeBand()).on('mouseover', function(d,i) {
        //barChartSelectOneCountry(this) //rect
        selectBarChartCountryWithClear(d, this)  //mouseover(d)

      }).style("stroke","white")

chart1.svg = svg
chart1.x = x
chart1.y = y

svg.selectAll("text")
    .data(data)
  .enter().append("text").text(function(d) {
        return d;
   }).attr("class", function(d) {return +d.netdonations_over_population_to_gdppercap_percentage <= 0 ? "recipient" : "donor"})
   .attr("y", function(d, i) {
        return y(d.name)+ y.rangeBand();
        //return i * (height / data.length)+30;
   }).attr("x", function(d) {
         return x(0) //x(Math.min(0, +d.netdonations_over_population_to_gdppercap_percentage));
   }).text(function(d) {
        //return y(d) + y.rangeBand() / 2;
        return d.name + " " + d.netdonations_over_population_to_gdppercap_percentage;
        }).style("font-size","14px").attr("dx", 3).attr("dy", "-0.45em")


  svg.append("g")
      .attr("class", "x axis")
      .call(xAxis);

  svg.append("g")
      .attr("class", "y axis")
    .append("line")
      .attr("x1", x(0))
      .attr("x2", x(0))
      .attr("y2", height);
}

1 个答案:

答案 0 :(得分:0)

只要鼠标位于栏的文本部分,鼠标悬停事件侦听器就不会触发。那是因为文本捕获了它。诀窍是阻止文本部分捕获鼠标事件。有关指南,请参阅http://themousepotatowebsite.co.za/pointer-events-none/

在你的CSS中

.text { pointer-event: none }