d3.compose Heatmap

forked from john-clarke's block: d3.compose Heatmap

<!DOCTYPE html>
<link rel="stylesheet" type="text/css" href="https://npmcdn.com/d3.compose@0.15.13/dist/d3.compose.css">
<style>
  .chart {width: 940px; height: 480px; margin: 10px; font-family: sans-serif;}
  .chart-axis .domain, .chart-axis .tick line {visibility: hidden;}
  .chart-axis .tick text {font-family: Consolas, courier; fill: #aaa, font-size: 10px;}
  .chart-heatmap rect {stroke: #e6e6e6; stroke-width: 2px;}
</style>

// Heatmap Chart
// -------------
var Mixed = helpers.mixin(d3c.Chart, mixins.XY, mixins.XYValues, mixins.StandardLayer);
Mixed.extend('Heatmap', {
  initialize: function() {
    Mixed.prototype.initialize.apply(this, arguments);

this.standardLayer('Heatmap', this.base.append('g').classed('chart-heatmap', true));
  },

zScale: helpers.property(),

onDataBind: function(selection, data) {
    return selection.selectAll('rect')
      .data(data, function(d) { return d.x + '-' + d.y; });
  },

onInsert: function(selection) {
    return selection.append('rect')
      .attr('rx', 4)
      .attr('ry', 4);
  },

onEnter: function(selection) {
    selection
      .attr('fill', '#fff');
  },

onMerge: function(selection) {
    selection
      .attr('x', this.barX)
      .attr('y', this.barY)
      .attr('width', this.barWidth)
      .attr('height', this.barHeight);
  },

onMergeTransition: function(selection) {
    selection
      .attr('fill', this.barFill);
  },

itemHeight: function() {
    var scale = this.yScale();
    if (scale && scale.width) {
      return scale.width();
    } else if (scale && scale.rangeBand) {
      return scale.rangeBand() || 0;
    } else {
      return 0;
    }
  },

barX: di(function(chart, d, i, j) {
    return chart.x.call(this, d, i, j) - (chart.itemWidth() / 2);
  }),

barY: di(function(chart, d, i, j) {
    return chart.y.call(this, d, i, j) - (chart.itemHeight() / 2);
  }),

barWidth: di(function(chart, d, i, j) {
    return chart.itemWidth();
  }),

barHeight: di(function(chart, d, i, j) {
    return chart.itemHeight();
  }),

barFill: di(function(chart, d, i, j) {
    return chart.zScale()(d.z);
  })
});

// Create chart
// ------------
// (from https://bl.ocks.org/tjdecke/5558084)
var config = {
  colors: ["#ffffd9","#edf8b1","#c7e9b4","#7fcdbb","#41b6c4","#1d91c0","#225ea8","#253494","#081d58"],
  days: ["Mo", "Tu", "We", "Th", "Fr", "Sa", "Su"],
  times: ["1a", "2a", "3a", "4a", "5a", "6a", "7a", "8a", "9a", "10a", "11a", "12a", "1p", "2p", "3p", "4p", "5p", "6p", "7p", "8p", "9p", "10p", "11p", "12p"],
  buckets: 9
};

var charts = [
    {type: 'Heatmap', id: 'heatmap', data: data, xScale: xScale, yScale: yScale, zScale: zScale}
  ];
  var xAxis = d3c.axis({scale: xScale});
  var yAxis = d3c.axis({scale: yScale});

return [
    xAxis,
    [yAxis, d3c.layered(charts)],
  ];
}).width(940).height(300);

// Draw chart
// ----------
d3.tsv('data.tsv', function(d) {
  return {
    hour: +d.hour,
    day: +d.day,
    value: +d.value,
    x: config.times[+d.hour - 1],
    y: config.days[+d.day - 1],
    z: +d.value
  };
}, function(err, data) {
  chart.draw(data);
});
</script>

https://d3js.org/d3.v3.min.js

https://cdnjs.cloudflare.com/ajax/libs/d3.chart/0.2.1/d3.chart.min.js

https://npmcdn.com/d3.compose@0.15.13/dist/d3.compose-all.js