Custom chart creation with canvas and Angular

Today, I'd like to show you how you can create a reusable chart using canvas HTML element and Angular.

We are going to develop the following component :


As you can see we have two series of data.

The component will be used as follow:

<custom-chart [data]="datasets"></custom-chart>

Let's first create the service to set up the canvas 2D context and draw our chart.

Chart Service


We are going to create a service to set up our environment and draw on the canvas. 

The data format should be:

Chart Component

We access the canvas reference using the @ViewChild annotation. We will use @Input annotation for data binding.


We can easily add more functionality to our component, but for demonstration purpose it's enough.


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