Question

我已经为此工作了几天了，而且我不能真正得到我的画线并且有一些日期格式化我无法破解的问题。

使用这个D3 v3小提琴作为灵感：http://jsfiddle.net/vmvp0zja/我尝试将其转换为D3 v4，但我无法真正正确地绘制数据。

我试图绘制几行，但我甚至无法绘制一行......

你能看看我在这里缺少什么吗？谢谢！：）

// JSON data:
var data = [
{"Date":"\/Date(1475272800000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475359200000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475445600000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475532000000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475618400000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475704800000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475791200000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475877600000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475964000000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1476050400000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1476136800000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1476223200000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1476309600000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1476396000000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475445600000)\/","Open":1,"Closed":0},
{"Date":"\/Date(1475532000000)\/","Open":1,"Closed":0},
{"Date":"\/Date(1475618400000)\/","Open":2,"Closed":0},
{"Date":"\/Date(1475791200000)\/","Open":9,"Closed":0},
{"Date":"\/Date(1475964000000)\/","Open":1,"Closed":0},
{"Date":"\/Date(1475445600000)\/","Open":0,"Closed":1},
{"Date":"\/Date(1475532000000)\/","Open":0,"Closed":1},
{"Date":"\/Date(1475618400000)\/","Open":0,"Closed":1},
{"Date":"\/Date(1475964000000)\/","Open":0,"Closed":1}]

这是我的D3混乱：

// linechart.js
var formatTime = d3.timeFormat("%Y-%m-%d");

    data.forEach(function (d) {
        var unixToISO = new Date(d.Date.match(/\d+/)[0]*1);
        d.Date = formatTime(unixToISO);
        d.Open = +d.Open;
        d.Closed = +d.Closed;
                console.log(d.Date);
        return d;
    });

    var margin = {top: 30, right: 40, bottom: 30, left: 50  },
       width = 600 - margin.left - margin.right,
       height = 270 - margin.top - margin.bottom;

    var x = d3.scaleTime()
        .range([0, width]);

    var y0 = d3.scaleLinear()
        .range([height, 0]);

    // Scale the range of the data
    x.domain(d3.extent(data, function (d) { return d.Date; }));
    y0.domain([
        d3.min(data, function (d) { return Math.min(d.Open); }),
        d3.max(data, function (d) { return Math.max(d.Open); })]);


    var valueline1 = d3.line()
      .x(function (d) { console.log(x(d.Date)); return x(d.Date); })
      .y(function (d) { return y(d.Open); });

    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 + ")");

    svg.append("g") // Add the X Axis
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x));

    svg.append("g")
      .attr("class", "y axis")
      .style("fill", "steelblue")
      .call(d3.axisLeft(y0));

    svg.append("path") // Add the valueline path.
      .data(data)
      .attr("class", "line")
      .attr("d", valueline1);

提前帮助我们。我可能忽略了一些明显的东西。谢谢！

Answer 1

的变化：

data.forEach(function(d) {
  var unixToISO = new Date(d.Date.match(/\d+/)[0] * 1);
  d.Date = unixToISO; // here
  d.Open = +d.Open;

// (...)
var valueline1 = d3.line()
  .x(function(d) {
    console.log(x(d.Date));
    return x(d.Date);
  })
  .y(function(d) {
    return y0(d.Open); // here
  });

// (...)
svg.append("path")
  .data([data]) // here
  .attr("class", "line")
  .attr("d", valueline1);

并添加带

的x轴标签

svg.append("text")
  .attr("transform", "translate(" + (width / 2) + " ," +
    (height + margin.top + 20) + ")")
  .style("text-anchor", "middle")
  .text("Date");

顺便说一句，您的数据未分类。

带有JSON日期的

1 个答案: