Line Data Example

forked from 35degrees's block: first line chart

forked from 35degrees's block: Titanic Legs

<!DOCTYPE html>
<meta charset="utf-8">
<link href='https://fonts.googleapis.com/css?family=Cabin:300,400' rel='stylesheet' type='text/css'>
<style> /* set the CSS */
.line {
  fill: none;
  stroke: MidnightBlue;
  stroke-width: 2px;
}
  .dot {
    fill: IndianRed;
  }
  .area {
    fill: PowderBlue;
  }
  text.shadow {
    stroke: white;
    stroke-width: 4px;
    opacity: 1
  }
</style>
<body>

<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
// set the dimensions and margins of the graph
var margin = {top: 20, right: 20, bottom: 30, left: 50},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;
// parse the date / time
var parseTime = d3.timeParse("%d-%b-%y");
// set the ranges
var x = d3.scaleTime().range([0, width]);
var y = d3.scaleLinear().range([height, 0]);
// define the line
  
var area = d3.area()
    .x(function(d) { return x(d.date); })
    .y0(height)
    .y1(function(d) { return y(d.close); });
var valueline = d3.line()
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.close); });
// append the svg obgect to the body of the page
// appends a 'group' element to 'svg'
// moves the 'group' element to the top left margin
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 + ")");
// Get the data
d3.tsv("linedata.tsv", function(error, data) {
  if (error) throw error;
  // format the data
  data.forEach(function(d) {
      d.date = parseTime(d.date);
      d.close = +d.close;
  });
  // Scale the range of the data
  x.domain(d3.extent(data, function(d) { return d.date; }));
  y.domain([0, d3.max(data, function(d) { return d.close; })]);
  
  svg.append("path")
       .data([data])
       .attr("class", "area")
       .attr("d", area);
  // Add the valueline path.
  svg.append("path")
      .data([data])
      .attr("class", "line")
  		.style("stroke-dotarray", ("3,3"))
      .attr("d", valueline);
  
  svg.selectAll("dot")
  		.data(data)
  	.enter().append("circle")
  		.attr("class", "dot")
  		.attr("r",5)
  		.attr("cx", function(d) { return x(d.date); })
  		.attr("cy", function(d) { return y(d.close); });
  
  
  
  // Add the X Axis
  svg.append("g")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x));
  // Add the Y Axis
  svg.append("g")
      .call(d3.axisLeft(y));
  
  svg.append("text")
  		.attr("x",width/2)
  		.attr("y", 0 - margin.top/2)
  		.attr("text-anchor", "middle")
  		.attr("dy","2em")
  		.style("font","24px cabin")
  		.style("text-decoration","underline")
  		.attr("class","shadow")
  		.text("Line Graph Data with Area");
  svg.append("text")
  		.attr("x",width/2)
  		.attr("y", 0 - margin.top/2)
  		.attr("text-anchor", "middle")
  		.attr("dy","2em")
  		.style("font","24px cabin")
  		.style("text-decoration","underline")
  		.text("Line Graph Data with Area");
});
</script>
</body>

https://d3js.org/d3.v4.min.js