D3 Examples - New Year's Card

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<!DOCTYPE html>
<meta charset="utf-8">
<style>
​
body {
  font: 10px sans-serif;
}
​
.axis path,
.axis line {
  fill: none;
  stroke: #F7F7F7;
  shape-rendering: crispEdges;
}
​
.axis path {
  display: none;
}
​
.line, .lineNL {
  fill: none;
}
​
​
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
​
var margin = {top: 60, right: 80, bottom: 60, left: 80},
    width = 900 - margin.left - margin.right,
    height = 460 - margin.top - margin.bottom;
​
var x = d3.scale.linear()
    .range([0, width])
    .domain([2005,2014]);
​
var y = d3.scale.linear()
    .range([height, 0])
    .domain([40,140]);
​
var greenColors = ["#769D0C", "#89B41C", "#50972F", "#356B13", "#466100"];
var redColors = ["#CE6B5D","#941F1F","#7F0000","#CC0000","#8C0000"];
    
var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom")
    .tickFormat(d3.format("d"));
​
var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left")
    .ticks(5)
    .tickSize(-width, 0, 0);
​
var line = d3.svg.line()
    .interpolate("cardinal")
    .x(function(d) { return x(d.year); })
    .y(function(d) { return y(d.region); });
​
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 + ")");
​
d3.csv("criminality.csv", function(error, data) {
  if (error) throw error;
  
  var keys = d3.keys(data[0]).filter(function(key) { return key !== "year"; });
  
  var regionLines = keys.map(function(name) {
    return {
      name: name,
      values: data.map(function(d) {
            return {
                year: +d.year,
                region: +d[name]};
        })
    };
  });
​
  //Append axes
  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);
​
  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis);
​
  
    //Append the region lines
    var lines = svg.selectAll(".lines")
        .data(regionLines.filter(function(d) {
                return d.name !== "Nederland";
            }))
        .enter().append("g")
        .attr("class", "lines");
​
    //Append some random circles
    var circles = svg.selectAll(".circles")
          .data(data)
              .enter().append("g")
          .attr("class", "circles");
      
    keys.forEach(function(key) {
​
        circles.append("circle")
          .attr("class", "circleRegion")
          .attr("cx", function(d) {
              return x(d.year) + randomFloat(-25,25);
          })
          .attr("cy", function(d) {
              return y(d[key]) + randomFloat(-25,25);
          })
          .attr("r", function(d) {
              return Math.round( randomFloat(2,10) ); 
          })
          .style("fill", function(d) {
                return greenColors[randomIntFromInterval(0,greenColors.length-1)];
          })
          .style("opacity", function(d) {
              return randomFloat(0.05,0.3); 
          });
    
    });  
        
    //Place all regions except the Netherlands as a whole   
    lines
          .append("path")
          .attr("class", "line")
          .attr("d", function(d) { return line(d.values); })
          .style("stroke-width", 14)
          .style("stroke", function(d) {
              return greenColors[randomIntFromInterval(0,greenColors.length-1)];
          })
          .style("opacity", 0.05);
        
    lines
          .append("path")
          .attr("class", "line")
          .attr("d", function(d) { return line(d.values); })
          .style("stroke-width", 4)
          .style("stroke", function(d) {
              return greenColors[randomIntFromInterval(0,greenColors.length-1)];
          })
          .style("opacity", 0.1);
          
    lines
          .append("path")
          .attr("class", "line")
          .attr("d", function(d) { return line(d.values); })
          .style("stroke-width", 1)
          .style("stroke", function(d) {
              return greenColors[randomIntFromInterval(0,greenColors.length-1)];
          })
          .style("opacity", 0.3);
​
    //     //Add labels
    // lines.append("text")
    //            .datum(function(d) { return {name: d.name, value: d.values[d.values.length - 1]}; })
    //            .attr("transform", function(d) {
    //            return "translate(" + x(d.value.year) + "," + y(d.value.region) + ")";
    //        })
    //            .attr("x", 3)
    //            .attr("dy", ".35em")
    //            .text(function(d) { return d.name; });
        
​
    //Place some random circles around the Netherlands line               
    circles.append("circle")
          .attr("class", "circleNL")
          .attr("cx", function(d) {
              return x(d.year) + randomFloat(-25,25);
          })
          .attr("cy", function(d) {
              return y(d["Nederland"]) + randomFloat(-25,25);
          })
          .attr("r", function(d) {
              return randomFloat(2,12); 
          })
          .style("fill", function(d) {
                return redColors[randomIntFromInterval(0,redColors.length-1)];
          })
          .style("opacity", function(d) {
              return randomFloat(0.4,0.8);
          });
    
    //Place the Netherlands as a total line on top              
    var lineNL = svg.selectAll(".linesNL")
          .data(regionLines.filter(function(d) {
              return d.name === "Nederland";
          }))
          .enter().append("g")
          .attr("class", "linesNL");
                        
    lineNL
          .append("path")
          .attr("class", "lineNL")
          .attr("d", function(d) { return line(d.values); })
          .style("stroke","#CE6B5D")
          .style("opacity", 0.3)
          .style("stroke-width", 18);
          
    lineNL
          .append("path")
          .attr("class", "lineNL")
          .attr("d", function(d) { return line(d.values); })
          .style("stroke","#CE6B5D")
          .style("opacity", 0.5)
          .style("stroke-width", 10);
          
    lineNL
          .append("path")
          .attr("class", "lineNL")
          .attr("d", function(d) { return line(d.values); })
          .style("stroke", "#941F1F")
          .style("stroke-width", 3);
      
});
​
function randomFloat(min, max) {
    return Math.random() * (min - max) + max;
}
​
function randomIntFromInterval(min,max) {
    return Math.floor(Math.random()*(max-min+1)+min);
}
​
</script>
    