Question

我的条形图有以下问题。如何在条形图中的适当位置设置小数标签值。标签不应该在最近的条形图中重叠。但在我的情况下它重叠。请建议如何纠正它下面是我的代码

var data = [
                    { Request: 1, AvgRequest: 4123.18 },
                    { Request: 2, AvgRequest: 5221.16 },
                    { Request: 3, AvgRequest: 32.42 },
                        { Request: 4, AvgRequest: 22.13 },
                    { Request: 5, AvgRequest: 413.21 },
                    { Request: 6, AvgRequest: 112.19 }
                ];



             var margin = { top: 40, right: 40, bottom: 35, left: 85 },
    width = 450 - margin.left - margin.right,
    height = 250 - margin.top - margin.bottom;

             var formatPercent = d3.format(".0%");

             var x = d3.scale.ordinal()
    .rangeRoundBands([0, width], .1);

             var y = d3.scale.linear()
    .range([height, 0]);

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

             var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left");




             var svg = d3.select("body").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 + ")");



             data.forEach(function (d) {

                 d.Request = d.Request;
                 d.AvgRequest = +d.AvgRequest;

             });

             x.domain(data.map(function (d) { return d.Request; }));
             y.domain([0, d3.max(data, function (d) { return d.AvgRequest; })]);

             svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);


             // xAxis label
             svg.append("text")
    .attr("transform", "translate(" + (width / 2) + " ," + (height + margin.bottom + 5) + ")")
    .style("text-anchor", "middle")
    .text("Numbers of request");

             //yAxis label
             svg.append("text")
        .attr("transform", "rotate(-90)")
        .attr("y", 0 - margin.left)
        .attr("x", 0 - (height / 2))
        .attr("dy", "1em")
        .style("text-anchor", "middle")
        .text("avg request);

             // Title
             svg.append("text")
        .attr("x", (width / 2))
        .attr("y", 0 - (margin.top / 2))
        .attr("text-anchor", "middle")
        .style("font-size", "16px")
        .style("text-decoration", "underline")
        .text("Avg");

             svg.append("g")
      .attr("class", "y axis")
      .call(yAxis);


             svg.selectAll(".bar")
      .data(data)
    .enter().append("rect")
      .attr("class", "bar")
      .attr("x", function (d) { return x(d.Request); })
      .attr("width", x.rangeBand())
      .attr("y", function (d) { return y(d.AvgRequest); })
      .attr("height", function (d) { return height - y(d.AvgRequest); });




             var text = svg.selectAll("text1")
                .data(data)
                .enter()
                .append("text")
                .attr("class", function (d) { return "label " + d.Request; })
                .attr("x", function (d, i) {
                    return x(i) + x.rangeBand() / 5;
                })
                .attr("y", function (d, i) {
                    return y(d.AvgRequest) + 25;
                })

             .text(function (d) { return d.AvgRequest; })
                .attr("font-size", "15px")
                .style("stroke", "black");

Answer 1

我添加了两个新变量来分隔完整图表和绘图区域的维度：

var margin = { top: 40, right: 40, bottom: 35, left: 85 },
    width = 450,
    height = 250;
    plotAreaWidth  = width - margin.left - margin.right,
    plotAreaHeight = height - margin.top - margin.bottom;

并相应地更改了其他代码。

文字标签的更改：

var text = svg.selectAll("text1")
    .data(data)
    .enter()
    .append("text")
    .attr("class", function (d) { return "label " + d.Request; })
    .attr("x", function (d, i) {
        //return x(i) + x.rangeBand() / 2;
        return x(d.Request);
    })
    .attr("y", function (d, i) {
        //return y(d.AvgRequest) + 25;
        return y(d.AvgRequest) - 5;
    })
    .text(function (d) { return d.AvgRequest; })
        .attr("font-size", "15px")
        .style("stroke", "black");

更改了示例at jsbin。

标签在D3条形图中未处于正确位置

1 个答案: