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;
  text-anchor: middle;
}

.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-gradient);					
  stroke-width: 0px;			
}

JavaScript

console.clear();

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

var data = [{date: '2013-01', value: 53 },
{date: '2013-02', value: 165 },
{date: '2013-03', value: 269 },
{date: '2013-04', value: 344 },
{date: '2013-05', value: 376 },
{date: '2013-06', value: 410 },
{date: '2013-07', value: 421 },
{date: '2013-08', value: 405 },
{date: '2013-09', value: 376 },
{date: '2013-10', value: 359 },
{date: '2013-11', value: 392 },
{date: '2013-12', value: 433 },
{date: '2014-01', value: 455 },
{date: '2014-02', value: 478 }]

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

// var x = d3.scaleBand()
var x = d3.scaleTime()
		.range([0, width])
//    .padding(0.25);

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

var xAxis = d3.axisBottom(x).ticks(width/20)

var yAxis = d3.axisLeft(y)
    .ticks(height/25);

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;
  });

//x.domain(data.map(function(d) { return parseDate(d.date); }));
x.domain(d3.extent(data, function(d) { return d.date; }));
y.domain([0, d3.max(data, function(d) { return d.value; })]);
 
// Bars
/* 
svg.selectAll("bar")
      .data(data)
    .enter().append("rect")
      .style("fill", "steelblue")
      .attr("x", function(d) { return x(d.date); })
      .attr("width", x.bandwidth())
      .attr("y", function(d) { return y(d.value); })
      .attr("height", function(d) { return height - y(d.value); }); */
      
      // set the gradient
  svg.append("linearGradient")				
    .attr("id", "area-gradient")			
    .attr("gradientUnits", "userSpaceOnUse")	
    .attr("x1", 0)
   ...