Question

我制作了一个简单的折线图。我已将网格添加到axis，但我希望将其保留为dotted或dashed，那么我该怎么做呢？

 var margin = {top: 20, right: 100, bottom: 30, left: 100},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var dataset = [
  {x: 0, y: 5},
  {x: 1, y: 8},
  {x: 2, y: 13},
  {x: 3, y: 12},
  {x: 4, y: 16},
  {x: 5, y: 21},
  {x: 6, y: 18},
  {x: 7, y: 23},
  {x: 8, y: 24},
  {x: 9, y: 28},
  {x: 10, y: 35},
  {x: 11, y: 30},
  {x: 12, y: 32},
  {x: 13, y: 36},
  {x: 14, y: 40},
  {x: 15, y: 38},
];

var xScale = d3.scale.linear()
    .domain([0, d3.max(dataset, function(d){ return d.x; })])
    .range([0, width]);

var yScale = d3.scale.linear()
    .domain([0, d3.max(dataset, function(d){ return d.y; })])
    .range([height, 0]);

var xAxis = d3.svg.axis()
    .scale(xScale)
    .orient("bottom")
    .innerTickSize(-height)
    .outerTickSize(0)
    .tickPadding(10);

var yAxis = d3.svg.axis()
    .scale(yScale)
    .orient("left")
    .innerTickSize(-width)
    .outerTickSize(0)
    .tickPadding(10);

var line = d3.svg.line()
    .x(function(d) { return xScale(d.x); })
    .y(function(d) { return yScale(d.y); });

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")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis)

  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)

  svg.append("path")
      .data([dataset])
      .attr("class", "line")
      .attr("d", line);

.axis path,
  .axis line{
    fill: none;
    stroke: black;
  }

  .line{
    fill: none;
    stroke: blue;
    stroke-width: 2px;
  }

  .tick text{
    font-size: 12px;
  }

  .tick line{
    opacity: 0.2;
  }

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>

Answer 1

您可以使用名为 stroke-dasharray 的svg元素的属性。每次必须设置样式时，请使用.style（）方法

svg.append("path")
  .data([dataset])
  .attr("class", "line")
  .style("stroke-dasharray", "5 5")
  .attr("d", line);

它也适用于轴

svg.append("g")
  .attr("class", "x axis")
  .attr("transform", "translate(0," + height + ")")
  .style("stroke-dasharray", "5 5")
  .call(xAxis)

svg.append("g")
  .attr("class", "y axis")
  .call(yAxis)
  .style("stroke-dasharray", "5 5")

查看here以查看更多属性或此jsFiddle

如果您只想为内部网格设置，那么您可以使用纯css

进行设置

.tick line{
    opacity: 0.2;
    stroke-dasharray: 5 5; 
}

Answer 2

使用CSS设置它，并仅将其应用于line tick g个孩子的.tick line{ opacity: 0.2; stroke-dasharray: 5,5; }元素：

 var margin = {top: 20, right: 100, bottom: 30, left: 100},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var dataset = [
  {x: 0, y: 5},
  {x: 1, y: 8},
  {x: 2, y: 13},
  {x: 3, y: 12},
  {x: 4, y: 16},
  {x: 5, y: 21},
  {x: 6, y: 18},
  {x: 7, y: 23},
  {x: 8, y: 24},
  {x: 9, y: 28},
  {x: 10, y: 35},
  {x: 11, y: 30},
  {x: 12, y: 32},
  {x: 13, y: 36},
  {x: 14, y: 40},
  {x: 15, y: 38},
];

var xScale = d3.scale.linear()
    .domain([0, d3.max(dataset, function(d){ return d.x; })])
    .range([0, width]);

var yScale = d3.scale.linear()
    .domain([0, d3.max(dataset, function(d){ return d.y; })])
    .range([height, 0]);

var xAxis = d3.svg.axis()
    .scale(xScale)
    .orient("bottom")
    .innerTickSize(-height)
    .outerTickSize(0)
    .tickPadding(10);

var yAxis = d3.svg.axis()
    .scale(yScale)
    .orient("left")
    .innerTickSize(-width)
    .outerTickSize(0)
    .tickPadding(10);

var line = d3.svg.line()
    .x(function(d) { return xScale(d.x); })
    .y(function(d) { return yScale(d.y); });

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")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis)

  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)

  svg.append("path")
      .data([dataset])
      .attr("class", "line")
      .attr("d", line);

示例：

＆＃13;

.axis path,
  .axis line{
    fill: none;
    stroke: black;
  }

  .line{
    fill: none;
    stroke: blue;
    stroke-width: 2px;
  }

  .tick text{
    font-size: 12px;
  }

  .tick line{
    opacity: 0.2;
    stroke-dasharray: 5,5;
  }

＆＃13;

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>

＆＃13;

var count = GetCount(v);

if (!count.HasValue)
    continue; // Or any other code here

include =  count.Value > 0;

＆＃13;

d3js如何将网格设为`dotted`或`dashed`？

2 个答案: