JQuery 滑块不与 d3 在垂直线上绘制的数据交互

Question

我正在尝试让我的数据与 jQuery 滑块交互。我的数据用钢蓝色的垂直线表示，但 jQuery 滑块仅与浅灰色垂直线 xAxis 交互，因为我使用 xAxis x.axis 及其路径设置它。它只随滑块移动，而不是钢蓝中的实际垂直线。我不能使用 d3 滑块，我被这个 d3 v2 困住了。我问了一个关于垂直线的问题：()，但建议对这个滑块问题问一个单独的问题:(任何输入都会有帮助！这是代码：

// define dimensions of graph
var m = [80, 80, 80, 80]; // margins
var w = 1000 - m[1] - m[3]; // width
var h = 350 - m[0] - m[2]; // height

// create a simple data array that we'll plot with a line (this array represents only the Y values, X will just be the index location)
var data = [0];
for (var i = 1; i < 50; i++) {
  var sign = Math.random() > 0.5 ? +1 : -1;
  data.push(data[i - 1] + sign * Math.random());
}

// X scale will fit all values from data[] within pixels 0-w
var x = d3.scale.linear().domain([0, data.length]).range([0, w]);
// Y scale will fit values from 0-10 within pixels h-0 (Note the inverted domain for the y-scale: bigger is up!)
var y = d3.scale.linear().domain([d3.min(data), d3.max(data)]).range([h, 0]);

// Add an SVG element with the desired dimensions and margin.
var graph = d3.select("#graph").append("svg:svg")
  .attr("width", w + m[1] + m[3])
  .attr("height", h + m[0] + m[2])
  .append("svg:g")
  .attr("transform", "translate(" + m[3] + "," + m[0] + ")");

// create yAxis
var xAxis = d3.svg.axis().scale(x).tickSize(-h).tickSubdivide(3);
// Add the x-axis.
graph.append("svg:g")
  .attr("class", "x axis")
  .attr("transform", "translate(0," + h + ")")
  .call(xAxis);

// create left yAxis
var yAxisLeft = d3.svg.axis().scale(y).ticks(4).orient("left");
// Add the y-axis to the left
graph.append("svg:g")
  .attr("class", "y axis")
  .attr("transform", "translate(-25,0)")
  .call(yAxisLeft);

var circle = graph.selectAll("circle")
  .data(data);

circle.enter()
  .append("circle")
  .attr("cx", function(d, i) {
    return x(i)
  })
  .attr("cy", function(d) {
    return y(d)
  })
  .attr("class", "circle")
  .attr("r", 2)
  .attr("fill", "red");

var verticalLine = graph.selectAll(".vertical-line")
  .data(data);

verticalLine.enter()
  .append("line")
  .attr("x1", function(d, i) {
    return x(i)
  })
  .attr("x2", function(d, i) {
    return x(i)
  })
  .attr({
    y1: 0,
    y2: h,
    stroke: 'steelblue',
    class: 'vertical-line'
  });

function zoom(begin, end) {
  x.domain([begin, end - 1]);

  var t = graph.transition().duration(0);

  var size = end - begin;
  var step = size / 10;
  var ticks = [];
  for (var i = 0; i <= 10; i++) {
    ticks.push(Math.floor(begin + step * i));
  }

  xAxis.tickValues(ticks);

  t.select(".x.axis").call(xAxis);
  t.select('.path').attr("d", verticalLine);
}

$(function() {
  $("#slider-range").slider({
    range: true,
    min: 0,
    max: 1000,
    values: [0, 1000],
    slide: function(event, ui) {
      var begin = d3.min([ui.values[0], data.length]);
      var end = d3.max([ui.values[1], 0]);
      console.log("begin:", begin, "end:", end);

      zoom(begin, end);
    }
  });
});

path {
  stroke: steelblue;
  stroke-width: 1;
  fill: none;
}

.axis {
  shape-rendering: crispEdges;
}

.x.axis line {
  stroke: lightgrey;
}

.x.axis .minor {
  stroke-opacity: .5;
}

.x.axis path {
  display: none;
}

.y.axis line,
.y.axis path {
  fill: none;
  stroke: #000;
}

<script src="https://mbostock.github.com/d3/d3.v2.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.23/jquery-ui.min.js"></script>
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/themes/ui-lightness/jquery-ui.css" type="text/css" media="all" />
<div id="graph" class="aGraph"></div>
<div id="slider-range" style="width: 80%px; margin-left:10%; margin-right:10%"></div>

Answer 1

我建议使用 d3-brush，因为它本质上是您想要的，但由 d3 团队为 d3 构建。

但是，如果您不能，我已经在下面使用您的 jQuery 滑块使其工作。您正在摆弄轴刻度，但我建议您重新绘制轴并让 d3 为您完成。每次更新 x.domain()，然后调用 draw() 函数重绘垂直线和圆圈`并重绘 x-axis。我已将域外的所有线条和圆圈的不透明度设置为 0，因此它们被隐藏了。

var m = [40, 80, 40, 80]; // margins
var w = 1000 - m[1] - m[3]; // width
var h = 300 - m[0] - m[2]; // height

var data = [0];
for (var i = 1; i < 50; i++) {
  var sign = Math.random() > 0.5 ? +1 : -1;
  data.push(data[i - 1] + sign * Math.random());
}

var x = d3.scale.linear().domain([0, data.length]).range([0, w]);
var y = d3.scale.linear().domain([d3.min(data), d3.max(data)]).range([h, 0]);

var graph = d3.select("#graph").append("svg:svg")
  .attr("width", w + m[1] + m[3])
  .attr("height", h + m[0] + m[2])
  .append("svg:g")
  .attr("transform", "translate(" + m[3] + "," + m[0] + ")");

var xAxis = d3.svg.axis().scale(x).tickSize(-h).tickSubdivide(3);
var xAxisGroup = graph.append("svg:g")
  .attr("class", "x axis")
  .attr("transform", "translate(0," + h + ")");

var yAxisLeft = d3.svg.axis().scale(y).ticks(4).orient("left");
graph.append("svg:g")
  .attr("class", "y axis")
  .attr("transform", "translate(-25,0)")
  .call(yAxisLeft);

function draw() {
  var circle = graph.selectAll("circle")
    .data(data);

  circle.exit().remove();
  circle.enter()
    .append("circle");

  circle
    .attr("cx", function(d, i) {
      return x(i)
    })
    .attr("cy", function(d) {
      return y(d)
    })
    .attr("opacity", function(d, i) {
      return x.domain()[0] <= i && i <= x.domain()[1] ? 1 : 0;
    })
    .attr("class", "circle")
    .attr("r", 2)
    .attr("fill", "red");

  var verticalLine = graph.selectAll(".vertical-line")
    .data(data);

  verticalLine.exit().remove();
  verticalLine.enter()
    .append("line");

  verticalLine
    .attr("x1", function(d, i) {
      return x(i)
    })
    .attr("x2", function(d, i) {
      return x(i)
    })
    .attr("opacity", function(d, i) {
      return x.domain()[0] <= i && i <= x.domain()[1] ? 1 : 0;
    })
    .attr({
      y1: 0,
      y2: h,
      stroke: 'steelblue',
      class: 'vertical-line'
    });

  xAxisGroup.call(xAxis);
}

draw();

function zoom(begin, end) {
  x.domain([begin, end]);
  draw();
}

$(function() {
  $("#slider-range").slider({
    range: true,
    min: 0,
    max: data.length,
    values: [0, data.length],
    slide: function(event, ui) {
      var begin = d3.min([ui.values[0], data.length]);
      var end = d3.max([ui.values[1], 0]);
      zoom(begin, end);
    }
  });
});

path {
  stroke: steelblue;
  stroke-width: 1;
  fill: none;
}

.axis {
  shape-rendering: crispEdges;
}

.x.axis line {
  stroke: lightgrey;
}

.x.axis .minor {
  stroke-opacity: .5;
}

.x.axis path {
  display: none;
}

.y.axis line,
.y.axis path {
  fill: none;
  stroke: #000;
}

<script src="https://mbostock.github.com/d3/d3.v2.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.23/jquery-ui.min.js"></script>
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/themes/ui-lightness/jquery-ui.css" type="text/css" media="all" />
<div id="graph" class="aGraph"></div>
<div id="slider-range" style="width: 80%px; margin-left:10%; margin-right:10%"></div>

JQuery 滑块不与 d3 在垂直线上绘制的数据交互

JQuery slider doesn't interact with data drawn in vertical line with d3

javascript

jquery

d3.js

jquery-ui-slider