Line Chart

forked from anonymous's block: fresh block

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v3.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
    .line {
      fill: pink;
      stroke: blue;
      stroke-width: 1.5px;
    }
  </style>
</head>

<body>
  <script>
    // Feel free to change or delete any of the code you see in this editor!
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500)

var width = 800;
    var height = 400;

// https://bl.ocks.org/zanarmstrong/raw/05c1e95bf7aa16c4768e/
    
var randomColor = (function(){
  var golden_ratio_conjugate = 0.618033988749895;
  var h = Math.random();

var hslToRgb = function (h, s, l){
      var r, g, b;

if(s == 0){
          r = g = b = l; // achromatic
      }else{
          function hue2rgb(p, q, t){
              if(t < 0) t += 1;
              if(t > 1) t -= 1;
              if(t < 1/6) return p + (q - p) * 6 * t;
              if(t < 1/2) return q;
              if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
              return p;
          }

var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
          var p = 2 * l - q;
          r = hue2rgb(p, q, h + 1/3);
          g = hue2rgb(p, q, h);
          b = hue2rgb(p, q, h - 1/3);
      }

return '#'+Math.round(r * 255).toString(16)+Math.round(g * 255).toString(16)+Math.round(b * 255).toString(16);
  };
  
  return function(){
    h += golden_ratio_conjugate;
    h %= 1;
    return hslToRgb(h, 0.5, 0.60);
  };
})();
    
    var parseDate = d3.time.format("%Y-%m");
    var displayDate = d3.time.format("%b %y");
    var displayValue = d3.format(",.0f");
    
    // Ordinal scale
    var x = d3.scale.ordinal()
        .rangeRoundBands([0, width], .5);

var y = d3.scale.linear()
        .range([height, height - 200]);

var line = d3.svg.line()
        .x(function(d) { return x(d.name); })
        .y(function(d) { return y(d.value); });
    
    var g = svg.append("g")
    	.attr("transform", "translate(50, 0)")
    
   	d3.json("dataset.json", function(data) {

// Pre-processing
      data.forEach(function(d) {
				d.value;// = +d.value;
        d["date"] = parseDate.parse(d["date"]);
      });
      
      x.domain(data.map(function(d) { return d.name; }));
			y.domain([0, d3.max(data, function(d) { return d.value; })]);
      
      svg.selectAll("text").data(data).enter()
       .append("text")
        .text(function(d, i) { return displayDate(d.date); })
        .attr("y", 420)
        .attr("x", function(d) { return x(d.name); })
        .style("font-size", 15)
        .style("font-family", "Comic Sans MS");

g.selectAll(".value").data(data).enter()
       .append("text")
        .text(function(d, i) { return displayValue(d.value); })
        .attr("class", "value")
        .attr("y", function(d) { return y(d.value)-20; })
        .attr("x", function(d) { return x(d.name);})
        .style("font-size", 10)
      	.style("opacity",0)
        .style("font-family", "Comic Sans MS");

g.selectAll("path").data([data]).enter().append("path")
        .attr("class", "line")
        .attr("d", line);
     
     g.selectAll("line").data(data).enter().append("line")       
                    .attr('x1',function(d) { return x(d.name); })
                    .attr('y1',function(d) { return y(0); })
                    .attr('x2',function(d) { return x(d.name); })
                    .attr('y2',function(d) { return y(d.value); })
                    .style("stroke-width", 5)
                    .style("stroke", randomColor)
                  //  .style("stroke-dasharray", ("2, 2"))
     								.style("opacity",0);

g.selectAll("circle").data(data).enter()
      .append("circle")
      .attr("cx",function(d) { return x(d.name); })
  		.attr("cy",function(d) { return y(d.value); })
      .attr("r",8)  
      .attr("opacity",0.15)
      .on("mouseover", function(d) {
    			d3.select(this).transition().duration(500)
      			.attr("opacity",1).attr("r",15).style("fill", randomColor);
      		d3.selectAll(".value").filter(function(e) {
          	return d === e;
        	})
        		.style("opacity",1)
        		.style("font-size", 30);
        	d3.selectAll("line").filter(function(e) {
          	return d === e;
        	})
        		.style("opacity",1)
      
    	})
      
			.on("mouseout", function(d) {
      			d3.select(this).transition().duration(1000).style("fill","black").attr("opacity",0.15).attr("r",8);
        d3.selectAll(".value").filter(function(e) {
          return d === e;})
          .style("opacity",0)
        .transition().duration(100);
      
   
       d3.selectAll("line").filter(function(e) {
          return d === e;
        })
        .style("opacity",0)
       .transition().duration(100);
        });
      
    });

</script>
</body>

https://d3js.org/d3.v3.min.js