d3js v4 playground

by nicotr014

HTML

<script src="https://d3js.org/d3-selection-multi.v0.4.min.js"></script>
<script src="https://d3js.org/d3.v4.min.js"></script>
<svg id="svg" class="chart"></svg>

CSS

.chart rect {
  fill: steelblue;
}

.chart text {
  font: 10px sans-serif;
}

.axis text {
  font: 10px sans-serif;
  fill: #000;
}

.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
  stroke-width: 1px;
}

.axis text {
  /* text-anchor: end; */
}

.line {
  fill: none;
  stroke: #FF70C2;
  stroke-width: 2px;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.area {							
  fill: url(#area-gradient1);					
  stroke-width: 0px;			
}

JavaScript

console.clear();

// Parse the date / time
var	parseDate = d3.timeParse("%Y-%m-%d");

var data = [
{date: '2013-02-01', value: 165 },
{date: '2013-03-02', value: 269 },
{date: '2013-04-05', value: 344 },
{date: '2013-05-12', value: 376 },
{date: '2013-06-19', value: 410 },
{date: '2013-07-04', value: 421 },
{date: '2013-08-04', value: 405 },
{date: '2013-09-06', value: 376 },
{date: '2013-10-12', value: 359 },
{date: '2013-11-10', value: 392 },
{date: '2013-12-09', value: 433 },
{date: '2014-01-24', value: 455 },
{date: '2014-02-28', value: 478 },
{date: '2014-03-05', value: 502 },
]

var data = [
{date: '2013-02-01', value: 100 },
{date: '2013-03-02', value: 169 },
{date: '2013-04-05', value: 4 },
{date: '2013-05-12', value: 376 },
{date: '2013-06-19', value: 410 },
{date: '2013-07-04', value: 421 },
]

var margin = {top: 20, right: 40, bottom: 70, left: 40},
    width = 500 - margin.left - margin.right,
    height = 300 - margin.top - margin.bottom

// Set the ranges
var x = d3.scaleTime().range([0, width])
var y0 = d3.scaleLinear().range([height, 0]);
var y1 = d3.scaleLinear().range([height, 0]);

// Axes
var xAxis = d3.axisBottom(x)
	.tickFormat(d3.timeFormat("%b %d"))
  //.ticks(7)
  .ticks(d3.timeMonth, 2)
  //.ticks(d3.timeWeek.every(8))
  //.tickSize(6, 0)
var yAxis0 = d3.axisLeft(y0)
    .ticks(height/25);
var yAxis1 = d3.axisRight(y1)
		.ticks(height/25);

// Basic chart
var svg = d3.select("#svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", 
          "translate(" + margin.left + "," + margin.top + ")");

// After data load

// format the data
  data.forEach(function(d) {
      d.date = parseDate(d.date);
      d.value = +d.value;
  });

// Set domains
x.domain(d3.extent(data, (d) => d.date));
y0.domain([0, d3.max(data, (d) => d.value)]);
y1.domain([0, d3.max(data, (d) => d.value)]);
      
  // set the gradient
  svg.append("linearGradient")				
 ...