Ember component library for C3, a D3-based reusable chart library.
See the demo here
- Ember.js v3.13 or above
- Ember CLI v3.24 or above
- Node.js v12 or above
- ember-auto-import >= 2 (BREAKING CHANGE!)
- Embroider compatabile
ember install ember-c3Component usage and properties are below. The code for these example charts and more is in the dummy app source code.
| Combination |
|---|
 |
| Timeseries |
|---|
 |
| Gauge | Pie | Donut |
|---|---|---|
 |
 |
 |
Where this.model is your C3 data and chart options:
See http://c3js.org/examples.html for examples of how to use C3.
The arguments match the corresponding C3 options found in the C3 Documentation. As documented, most C3 settings (i.e. bar, axis, size, etc) can be included in the data object.
Arguments break out the settings to simplify chart configuration. Note: The
chart type must be assigned in the chart data object.
Properties marked with an asterisk (*) will update the chart when the property changes. See examples in the dummy app.
| Property | Description | Example |
|---|---|---|
| c3chart | Assigns the generated C3 chart object to the passed property. Any C3 API method can be used with this property | chart.hide("data1") |
| data* | C3 data object. data is mutable after the chart is created |
|
| axis* | C3 axis object. See C3 examples for combining with data object. Chart axis are mutable after the chart is created | |
| bar | Used to assign bar chart properties | |
| pie | Used to assign pie chart properties | |
| donut | Used to assign donut chart properties | |
| gauge | Used to assign gauge chart properties | |
| line | Used to assign line chart properties | |
| area | Used to assign area chart properties | |
| point | Used to assign data point properties | |
| grid | Used to show, hide and modify the graph grid. See docs | |
| legend | Show, hide and modify the legend position. See docs | |
| tooltip | Show, hide and modify the tooltip. See docs | |
| subchart | Show, hide and modify C3 sub charts. See docs | |
| zoom | Set C3 zoom features. See docs | |
| size | Control chart size. See docs | size: {width: 640 } |
| padding | Set padding around graph. See docs | padding: { top: 20} |
| title | Set chart title | title: { text: "This is my chart" } |
| interaction | Enable or disable interactions | interaction: { enabled: false } |
| color* | Used to assign color properties. Chart colors are mutable after chart creation | |
| dtitle | Dynamically change the chart title. See details below | |
| transition | Equivalent to transition.duration. Default duration is 350ms. Transition times less than 300ms may not render properly. Use chart.load() and .unload() if shorter times are required | |
| unloadDataBeforeChange | When set to true existing data will be unloaded before new data is loaded. Useful for pie and donut chart data changes. You can manually load/unload data using chart.load() and chart..unload() |
The dtitle property is used to dynamically change a chart's title. C3 doesn't
natively support this without forcing a chart redraw which can cause side
effects.
The title can be set by targeting the .c3-title class but that doesn't provide
abstraction from C3's internals.
dtitle gives you some control over side effects using a parameter to control
how the graph is refreshed. An object with the new title and a refresh
parameter is used to indicate whether all properties should be refreshed or only
the chart title.
Setting refresh to false will only refresh the title and ignore changes to the
data, colors and axis properties. A short example is below. See the drill down
example in the dummy app to see how dttile is used and potential side effects.
The chart's initial title is set using the title parameter.
import Controller from '@ember/controller';
import { action } from '@ember/object';
import { tracked } from '@glimmer/tracking';
export default class ApplicationController extends Controller {
@tracked title = { text: 'Coffee Brewing' };
@tracked dtitle;
get graphData() {
return {
columns: [
['Cold Brewed', 12],
['Drip', 67],
['French Press', 14],
['Iced', 38],
['Percolated', 64]
],
type: 'pie'
};
}
@action
changeTitle() {
this.dtitle = { text: 'Making coffee!', refresh: false };
}
}If you assign a controller property to the c3chart property, you can use most of C3's api methods. Not all the methods have been tested.
// controllers/application.js
import { action } from '@ember/object';
import Controller from '@ember/controller';
export default class ApplicationController extends Controller {
chart = null;
baseData = {
columns: [
['US', 64],
['German', 36]
],
type: 'donut'
};
modelsGerman = [
['Mercedes', 12],
['Volkswagon', 54],
['BMW', 34]
];
modelsUS = [
['Ford', 35],
['Chevy', 26],
['Tesla', 2],
['Buick', 10],
['Dodge', 27]
];
@action
resetData() {
this.chart.load(this.baseData);
this.chart.unload([
'Mercedes',
'Volkswagon',
'BMW',
'Ford',
'Chevy',
'Tesla',
'Buick',
'Dodge'
]);
}
@action
loadUS() {
this.chart.load({ columns: this.modelsUS });
this.chart.unload('US', 'German');
}
@action
loadGerman() {
this.chart.load({ columns: this.modelsGerman });
this.chart.unload('US', 'German');
}
}C3 emits two types of events - chart and data events. Chart events are assigned callback functions using component arguments.
Data events must be assigned to an action in the data object.
Chart events supported by ember-c3.
| Events | Description | Example |
|---|---|---|
| oninit | Triggered when chart is initialized | @oninit={{this.init}} |
| onrendered | Triggered when chart is rendered or redrawn | @onrendered={{this.render}} |
| onmouseover | Triggered when mouse enters the chart | @onmouseover={{this.mouseover}} |
| onmouseout | Triggered when mouse leaves the chart | @onmouseout={{this.mouseout}} |
| onresize | Triggered when screen is resized | @onresize={{this.resize}} |
| onresized | Triggered when resizing is completed | @onresized={{this.resized}} |
Callback functions will receive the C3 chart object which can be used to
modify the chart or as data source for other operations. The @oninit event
does not receive the chart object because the chart has not been created yet.
See the chart events example can be used in the dummy app.
C3 data events such as onclick, onmouseover and onmouseout are assgined
callback functions in the chart configuration or data settings. Data events
supply the data names and values based on mouse location.
A data event example is shown below. Note that data callbacks require bind.
See the dummy app for more examples.
// controllers/application.js
import { action } from '@ember/object';
import Controller from '@ember/controller';
import { bind } from '@ember/runloop';
export default class ApplicationController extends Controller {
get data() {
// iris data from R
return {
columns: [
['data1', 30],
['data2', 120],
['data3', 10],
['data4', 45],
['data5', 90]
],
type: 'pie',
// override component onclick event handler
// bind is required for data events
onclick: bind(this, this.onClick)
};
}
// oninit chart event
@action
setup() {
console.log('chart inited');
}
// data event - triggered when pie slice is clicked
onClick(data, elem) {
alert(`Data ${data.name} has a value of ${data.value}`);
}
}You can use the D3 library in your application by importing it where needed
import d3 from 'd3';See the D3 example in the dummy app.
See the Contributing guide for details.
This project is licensed under the MIT License.
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