d3intro_ex13

Intro d3js

### Example13 - Axis

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Intro d3js examples</title>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
    <style>
      body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
      .existing {color: blue;}
      .new {color: green;}
      .axis path, 
      .axis line {
        fill: none;
        stroke: black;
        shape-rendering: crispEdges;
      }
      
      .axis text {
        font-family: sans-serif;
        font-size: 11px;
      }
    </style>
  </head>
  <body>
    <h1>Intro d3js - example13</h1>
    
    <script type="text/javascript">
    	//Width and height
      var w = 500;
      var h = 300;
      //Once the visualization is scalable we can adjust the size of it easily
      //var h = 300;
      var padding = 40;
      var offset = 3;
      
      
      /*
      var dataset = [
              [5, 20], [480, 90], [250, 50], [100, 33], [330, 95],
              [410, 12], [475, 44], [25, 67], [85, 21], [220, 88],[200, 50]
              ];*/
        
       
      ///Dynamic, random dataset
      var dataset = [];          //Initialize empty array
      var numDataPoints = 15;        //Number of dummy data points to create
      var xRange = Math.random() * 1000;  //Max range of new x values
      var yRange = Math.random() * 500;  //Max range of new y values
      for (var i = 0; i < numDataPoints; i++) {          //Loop numDataPoints times
        var newNumber1 = Math.floor(Math.random() * xRange);  //New random integer
        var newNumber2 = Math.floor(Math.random() * yRange);  //New random integer
        dataset.push([newNumber1, newNumber2]);          //Add new number to array
      }
      
                 
      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[0]; })])
                  .range([2, 5]);
  
      var formatAsPercentage = d3.format(".1%");
      
      //Define X axis
      var xAxis = d3.svg.axis()
                .scale(xScale)
                .orient("bottom")
                .ticks(10);

//Define Y axis
      var yAxis = d3.svg.axis()
                .scale(yScale)
                .orient("left")
                .ticks(5);
      
      //Create SVG element
      var svg = d3.select("body")
            .append("svg")
            .attr("width", w)
            .attr("height", h);
      
      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[0]);
         });

//Labels
      svg.selectAll("text")
         .data(dataset)
         .enter()
         .append("text")
         .text(function(d) {
             return d[0] + "," + d[1];
         })
         .attr("x", function(d) {
             return xScale(d[0]) + offset;
         })
         .attr("y", function(d) {
             return yScale(d[1]) - offset;
         })
         .attr("font-family", "sans-serif")
         .attr("font-size", "10px")
         .attr("fill", "teal");
      
      //Create X axis
      svg.append("g")
        .attr("class", "axis")
        .attr("transform", "translate(0," + (h-padding) + ")")
        .call(xAxis);
      
      //Create Y axis
      svg.append("g")
        .attr("class", "axis")
        .attr("transform", "translate(" + padding + ",0)")
        .call(yAxis);
      </script>
  </body>
</html>

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js