D3 Calendar Heatmap

This repo is forked from calendar-heatmap, with a few additional features and modificaitons:

• Support custom mouseover and mouseout event handlers
• Support custom date range (using start and end dates)
• UI and color scheme changes

A d3.js heatmap representing time series data. Inspired by Github's contribution chart

TODO

• Enable/disable tooltip
• Editing of tooltip text
• Editing of the cell gradient colours
• Configuration of the start/end dates
• Add optional callback for click events on the day cells
• Add project to bower
• Remove example and vendor folders to separate gh-pages branch

Configuration

Property	Usage	Default	Required
data	Chart data	none	yes
dateRange	Array of continuous dates from start to end (see example below)	a year ago to now	no
selector	DOM selector to attach the chart to	body	no
colorRange	Minimum and maximum chart gradient colors	['#D8E6E7', '#218380']	no
tooltipEnabled	Option to render a tooltip	true	no
legendEnabled	Option to render a legend	true	no
onClick	callback function on day click events (see example below)	null	no
onMouseOver	callback function on day mouseover events (see example below)	null	no
onMouseOut	callback function on day mouseout events (see example below)	null	no

Dependencies

• d3.js
• moment.js

Usage

1: Add d3.js and moment.js

2: Include calendar-heatmap.js and calendar-heatmap.css <link rel="stylesheet" type="text/css" href="path/tocalendar-heatmap.css"> <script src="path/to/calendar-heatmap.js"></script>

3: Format the data so each array item has a date and count property. As long as new Date() can parse the date string it's ok. Note - there all data should be rolled up into daily bucket granularity.

4: Configure the chart and render it

// chart data example
var chartData = [{
  date: valid Javascript date object,
  count: Number
}];
var chart1 = calendarHeatmap()
  .data(chartData)
  .dateRange(d3.time.days(new Date(2016, 0, 1), new Date(2017, 0, 1)))
  .selector('#chart-one')
  .colorRange(['#D8E6E7', '#218380'])
  .tooltipEnabled(true)
  .onClick(function (data) {
    console.log('onClick callback. Data:', data);
  })
  .onMouseOver(function(data) {
    // you can access the element via this
    console.log('onMouseOver callback. Data:', data);
  })
  .onMouseOut(function(data) {
    // you can access the element via this
    console.log('onMouseOut callback. Data:', data);
  });
chart1();  // render the chart

Pull Requests and issues

...are very welcome!