D3 Examples - Visualization Implementation (VI3)

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
    <style type="text/css">
            .axis path,
            .axis line {
                fill: none;
                stroke: black;
                shape-rendering: crispEdges;
            }
            
            .axis text {
                font-family: sans-serif;
                font-size: 11px;
            }
    button {position:absolute;top:10px;left:400px;} 
        </style>
</head>
​
<body>
  <div class ="Murray"></div>
  <div class="startrans"><button type="button"onclick="run();">Transition</button></div>
  <script>
        var svg = d3.select(".Murray")
            //Width and height
            var w = 500;
            var h = 300;
            var padding = 30;
            
            //Dynamic, random dataset
            var dataset = [];                   //Initialize empty array
            var numDataPoints = 50;             //Number of dummy data points to create
            var xRange = Math.random() * 1000;  //Max range of new x values
            var yRange = Math.random() * 1000;  //Max range of new y values
            for (var i = 0; i < numDataPoints; i++) {                   //Loop numDataPoints times
                var newNumber1 = Math.round(Math.random() * xRange);    //New random integer
                var newNumber2 = Math.round(Math.random() * yRange);    //New random integer
                dataset.push([newNumber1, newNumber2]);                 //Add new number to array
            }
​
            //Create scale functions
            var xScale = d3.scale.linear()
                                 .domain([0, d3.max(dataset, function(d) { return d[0]; })])
                                 .range([padding, w - padding * 2]);
​
            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]);
​
            //Define X axis
            var xAxis = d3.svg.axis()
                              .scale(xScale)
                              .orient("bottom")
                              .ticks(5);
​
            //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);
​
            //Create circles
            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]);
               });
​
            //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);
​
​
        var svg = d3.select(".startrans").append("svg").attr("width", 500).attr("height", 200);
            
        var star = svg.append("path").attr("transform", "translate(60,120)rotate(0)").style("stroke", "blue").style("fill", "none").attr("d", "m 0,-60 l 20,40 l 40,20 l -40,20 l -20,40 l -20,-40 l -40,-20 l 40,-20 z");
        function run() {
        
        var button = d3.select("button");
        if(button.text() =="Transition") { 
            star.style("fill", "white").transition().duration(1000).style("fill", "blue").attr("transform", "translate(440,120)rotate(180)").attr("d", "m 0,-60 l 40,20 l 20,40 l -20,40 l -40,20 l -40,-20 l -20,-40 l 20,-40 z").each("end",function() { 
            svg.append("circle").attr("cx", 440).attr("cy", 120).attr("r",250).style("fill", "green").style("opacity", "0").transition().duration(700).attr("r",0).style("fill", "yellow").style("opacity",1).remove();});
            d3.select("button").text("Reset");
        } 
         else {
            d3.select("button").text("Transition");
            star.transition().duration(1000).attr("transform", "translate(100,120)rotate(0)").style("stroke", "blue").style("fill", "none")
            .attr("d", "m 0,-60 l 20,40 l 40,20 l -40,20 l -20,40 l -20,-40 l -40,-20 l 40,-20 z");
        }
        };
​
        
    </script>
</body>
​
    