D3 Examples - D3 Binary Sparkline

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<!DOCTYPE html>
<html>
<script src="https://d3js.org/d3.v3.min.js"></script>
<head>
    <title>D3 Sparkline</title>
</head>
<style>
    body {
        font-family:"Lucida Grande","Droid Sans",Arial,Helvetica,sans-serif;
    }
    .legendwrap {
        width: 300px;
    }
    .bld {
        font-weight: bold;
    }
    .mine {
        background-color: #9ACC73;
        fill: #9ACC73;
    }
    .yours {
        background-color: #4D7FBF;
        fill: #4D7FBF;
    }
    .rsp {
        stroke: #FF0000;
        stroke-width: 0.5px;
    }
    .oversvg {
        padding: 50px;
    }
</style>
<body>
</body>
​
<script>
d3.json("data.json", function(error, json) {
            var h = 75;
            var t = json.edges.length;
            var w = 300;
            // dymanically calculate width, shrinks ticks to fit the size
            var sw = Math.min(w/t, 25); 
            
      var svg = d3.select("body")
                .append("svg:svg")
                .attr("height", h)
                .attr("width", w)
                .attr("class", "oversvg");
​
            var node = svg.selectAll("g.tick")
                .data(json.edges)
                .enter().append("svg:g")
                .attr("class", "tick");
                
            node.append("svg:rect")
                .attr("class", function(d) {
                    var retval = '';
                    d['mine'] == 1 ? retval += "mine": retval += "yours";
                    d['resp'] == 1 ? d['mine'] == 0 ? retval += " rsp" : '' : '';
                    return retval;
                })
                .attr("x", function(d, i) {
                    return i * sw + 1;
                })
                .attr("y", function(d) {
                    return d['top']==1?0:h/2;
                })
                .attr("height", h/2-1)
                .attr("width", function(d) {
                    return sw - 1.5;
                });
​
            node.append("svg:title")
                .text(function (d) {
                    return d['name'];
                });
        });
</script>
</html>
    