Area Charts

Both line and radar charts support a fill option on the dataset object which can be used to create area between two datasets or a dataset and a boundary, i.e. the scale origin, start or end (see filling modes).

Note: this feature is implemented by the filler plugin.

Filling modes

1 dataset filling modes have been introduced in version 2.6.02 prior version 2.6.0, boundary values was 'zero', 'top', 'bottom' (deprecated)3 for backward compatibility, fill: true (default) is equivalent to fill: 'origin'

Example

1. new Chart(ctx, {
2. data: {
3. datasets: [
4. {fill: 'origin'},      // 0: fill to 'origin'
5. {fill: '+2'},          // 1: fill to dataset 3
6. {fill: 1},             // 2: fill to dataset 1
7. {fill: false},         // 3: no fill
8. {fill: '-2'}           // 4: fill to dataset 2
9. ]
10. }
11. })

Configuration

propagate

Boolean (default: true)

If true, the fill area will be recursively extended to the visible target defined by the fill value of hidden dataset targets:

Example

1. new Chart(ctx, {
2. data: {
3. datasets: [
4. {fill: 'origin'},   // 0: fill to 'origin'
5. {fill: '-1'},       // 1: fill to dataset 0
6. {fill: 1},          // 2: fill to dataset 1
7. {fill: false},      // 3: no fill
8. {fill: '-2'}        // 4: fill to dataset 2
9. ]
10. },
11. options: {
12. plugins: {
13. filler: {
14. propagate: true
15. }
16. }
17. }
18. })

propagate: true:

• if dataset 2 is hidden, dataset 4 will fill to dataset 1
• if dataset 2 and 1 are hidden, dataset 4 will fill to 'origin' propagate: false:
• if dataset 2 and/or 4 are hidden, dataset 4 will not be filled