More interesting Scatterplot by dhoboy

index.html

<html>
<head>
<script src="//d3js.org/d3.v3.js"></script>
<style>
  .axis path,
  .axis line {
    fill: none;
    stroke: green;
    stroke-width: 3px;
    shape-rendering: crispEdges;
  }
  
  .axis text {
    font-family: sans-serif;
    font-size: 11px;
    fill: #743403;
  }
</style>
</head>
<body>
<script>
// size of svg
var h = 500;
var w = 500;
var padding = 30;

// generate random data (real data coming soon :)
var dataset = [];
var xRange = Math.random() * 1000;
var yRange = Math.random() * 1000;
for(var i = 0; i < 50; i++) {
  dataset.push([Math.round(Math.random() * xRange), Math.round(Math.random() * yRange)]);
}

// make scales
var xScale = d3.scale.linear()
                     .domain([0, d3.max(dataset, function(d) { return d[0]; })])
                     .range([padding, w - padding]);
                     
var yScale = d3.scale.linear()
                     .domain([0, d3.max(dataset, function(d) { return d[1]; })])
                     .range([h - padding, padding]);
                     
var rScale = d3.scale.linear()
                     .domain([0, d3.max(dataset, function(d) { return d[1]; })])
                     .range([2,5]);
                     
var colorScale = d3.scale.linear()
                         .domain([0, d3.max(dataset, function(d) { return d[0]; })])
                         .range(["yellow","purple"]);

// append the svg
var svg = d3.select("body")
            .append("svg")
            .attr("height", h)
            .attr("width", w);

// plot the data
svg.selectAll("circle")
   .data(dataset)
   .enter()
   .append("circle")
   .attr("cx", function(d){
      return xScale(d[0]);
   })
   .attr("cy", function(d){
      return yScale(d[1]);
   })
   .attr("r", function(d){
      return rScale(d[1]);
   })
   .attr("fill", function(d){
      return colorScale(d[0]);
   })

// add the axes
var xAxis = d3.svg.axis() 
                  .scale(xScale)
                  .orient("bottom")
                  .ticks(5);

svg.append("g")
   .attr("class", "axis")
   .attr("transform", "translate(0," + (h - padding) + ")")
   .call(xAxis);

var yAxis = d3.svg.axis()
                  .scale(yScale)
                  .orient("left")
                  .ticks(5);
                  
svg.append("g")
  .attr("class", "axis")
  .attr("transform", "translate(" + padding + ",0)")
  .call(yAxis);

</script>
</body>
</html>