D3Visualization/heatmap.html at master · jun159/D3Visualization · GitHub

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<!DOCTYPE html>
<meta charset="utf-8">
<html>
<head>
    <link rel="stylesheet" type="text/css" href="./css/custom.css">
    <script src="http://d3js.org/d3.v3.js"></script>
</head>

<center>
<div id="chart"></div>
<script type="text/javascript">
    var margin = { top: 50, right: 0, bottom: 100, left: 30 },
            width = 960 - margin.left - margin.right,
            height = 430 - margin.top - margin.bottom,
            gridSize = Math.floor(width / 24),
            legendElementWidth = gridSize*2,
            buckets = 9,
            colors = ["#fee2ee","#fee2ee","#fad4df","#fbccdb","#f5aebe","#faa1b7","#ef839a","#e55b7d","#d50032"], // alternatively colorbrewer.YlGnBu[9]
            days = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
            times = ["0000", "0100", "0200", "0300", "0400", "0500", "0600", "0700", "0800", "0900", "1000", "1100", "1200",
                "1300", "1400", "1500", "1600", "1700", "1800", "1900", "2000", "2100", "2200", "2300"];

    datasets = ["./data/data.json"];

    var svg = d3.select("#chart").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 + ")");

    var dayLabels = svg.selectAll(".dayLabel")
            .data(days)
            .enter().append("text")
            .text(function (d) { return d; })
            .attr("x", 0)
            .attr("y", function (d, i) { return i * gridSize; })
            .style("text-anchor", "end")
            .attr("transform", "translate(-6," + gridSize / 1.5 + ")")
            .attr("class", function (d, i) { return ((i >= 0 && i <= 4) ? "dayLabel mono axis axis-workweek" : "dayLabel mono axis"); });

    var timeLabels = svg.selectAll(".timeLabel")
            .data(times)
            .enter().append("text")
            .text(function(d) { return d; })
            .attr("x", function(d, i) { return i * gridSize; })
            .attr("y", 0)
            .style("text-anchor", "middle")
            .attr("transform", "translate(" + gridSize / 2 + ", -6)")
            .attr("class", function(d, i) { return ((i >= 7 && i <= 16) ? "timeLabel mono axis axis-worktime" : "timeLabel mono axis"); });

    d3.json('./data/data.json', function(error, data) {
        var colorScale = d3.scale.quantile()
                .domain([0, buckets - 1, d3.max(data, function (d) { return d.value; })])
                .range(colors);
        var cards = svg.selectAll(".hour")
                .data(data, function(d) {return d.day+':'+d.hour;});
        cards.append("title");
        cards.enter().append("rect")
                .attr("x", function(d) { return (d.hour) * gridSize; })
                .attr("y", function(d) { return (d.day) * gridSize; })
                .attr("rx", 4)
                .attr("ry", 4)
                .attr("class", "hour bordered")
                .attr("width", gridSize)
                .attr("height", gridSize)
                .style("fill", colors[0]);
        cards.transition().duration(1000)
                .style("fill", function(d) { return colorScale(d.value); });
        cards.select("title").text(function(d) { return d.value; });
        cards.exit().remove();
        var legend = svg.selectAll(".legend")
                .data([0].concat(colorScale.quantiles()), function(d) { return d; });
        legend.enter().append("g")
                .attr("class", "legend");
        legend.append("rect")
                .attr("x", function(d, i) { return legendElementWidth * i; })
                .attr("y", height)
                .attr("width", legendElementWidth)
                .attr("height", gridSize / 2)
                .style("fill", function(d, i) { return colors[i]; });
        legend.append("text")
                .attr("class", "mono")
                .text(function(d) { return "≥ " + Math.round(d); })
                .attr("x", function(d, i) { return legendElementWidth * i; })
                .attr("y", height + gridSize);
        legend.exit().remove();
    });
</script>
</center>
</html>