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Annotation

The annotations are used to mark the specific area of interest in the chart area with texts, shapes or images.

By using the content option of annotation property, you can specify the Id of the element that needs to be displayed in the chart area.

Source
Preview
app.vue
<template>
    <div id="app">
         <ejs-accumulationchart id="container" :annotations='annotations'>
            <e-accumulation-series-collection>
                <e-accumulation-series :dataSource='seriesData' xName='x' yName='y'> </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
</template>
<script>
import Vue from "vue";
import { AccumulationChartPlugin, PieSeries, AccumulationAnnotation } from "@syncfusion/ej2-vue-charts";

Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      seriesData: [{ x: 'Jan', y: 3 }, { x: 'Feb', y: 3.5 }, { x: 'Mar', y: 7 }, { x: 'Apr', y: 13.5 },{ x: 'May', y: 19 }, { x: 'Jun', y: 23.5 }, { x: 'Jul', y: 26 }, { x: 'Aug', y: 25 },
            { x: 'Sep', y: 21 }, { x: 'Oct', y: 15 }],
        annotations:[{
        content:'<div style="border: 1px solid black;background-color:#f5f5f5; padding: 5px 5px 5px 5px">13.5</div>',
        region: 'Series',
        coordinateUnits: 'Point',
        x: 'Jan',
        y: 3
    }]
    };
  },
  provide: {
     accumulationchart: [AccumulationAnnotation, PieSeries]
  }
};
</script>
<style>
 #container {
     height: 350px;
 }
</style>

Note: To use annotation feature in accumulation chart, we need to inject AccumulationAnnotation using provide.

Region

The annotation can be placed with respect to either Series or Chart.

Source
Preview
app.vue
<template>
    <div id="app">
         <ejs-accumulationchart id="container" :annotations='annotations'>
            <e-accumulation-series-collection>
                <e-accumulation-series :dataSource='seriesData' xName='x' yName='y'> </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
</template>
<script>
import Vue from "vue";
import { AccumulationChartPlugin, PieSeries, AccumulationAnnotation } from "@syncfusion/ej2-vue-charts";

Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      seriesData: [{ x: 'Jan', y: 3 }, { x: 'Feb', y: 3.5 }, { x: 'Mar', y: 7 }, { x: 'Apr', y: 13.5 },{ x: 'May', y: 19 }, { x: 'Jun', y: 23.5 }, { x: 'Jul', y: 26 }, { x: 'Aug', y: 25 },
            { x: 'Sep', y: 21 }, { x: 'Oct', y: 15 }],
        annotations:[{
        content:'<div style="border: 1px solid black;background-color:#f5f5f5; padding: 5px 5px 5px 5px">13.5</div>',
        region: 'Chart',
        coordinateUnits: 'Pixel',
        x: 250,
        y: 150
    }]
    };
  },
  provide: {
     accumulationchart: [AccumulationAnnotation, PieSeries]
  }
};
</script>
<style>
 #container {
     height: 350px;
 }
</style>

Co-ordinate Units

Specifies the coordinate units of an annotation either in Pixel or Point.

Source
Preview
app.vue
<template>
    <div id="app">
         <ejs-accumulationchart id="container" :annotations='annotations'>
            <e-accumulation-series-collection>
                <e-accumulation-series :dataSource='seriesData' xName='x' yName='y'> </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
</template>
<script>
import Vue from "vue";
import { AccumulationChartPlugin, PieSeries, AccumulationAnnotation } from "@syncfusion/ej2-vue-charts";

Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      seriesData: [{ x: 'Jan', y: 3 }, { x: 'Feb', y: 3.5 }, { x: 'Mar', y: 7 }, { x: 'Apr', y: 13.5 },{ x: 'May', y: 19 }, { x: 'Jun', y: 23.5 }, { x: 'Jul', y: 26 }, { x: 'Aug', y: 25 },
            { x: 'Sep', y: 21 }, { x: 'Oct', y: 15 }],
        annotations:[{
        content:'<div style="border: 1px solid black;background-color:#f5f5f5; padding: 5px 5px 5px 5px">Jan : 13.5</div>',
        region: 'Series',
        coordinateUnits: 'Point',
        x: 'Jan',
        y: 3
    }]
    };
  },
  provide: {
     accumulationchart: [AccumulationAnnotation, PieSeries]
  }
};
</script>
<style>
 #container {
     height: 350px;
 }
</style>

Alignment

The annotations provides the verticalAlignmentor horizontalAlignment properties. The verticalAlignment property can be customized via Top, Bottom or Middle and the horizontalAlignment property can be customized via Near, Far or Center.

Source
Preview
app.vue
<template>
    <div id="app">
         <ejs-accumulationchart id="container" :annotations='annotations'>
            <e-accumulation-series-collection>
                <e-accumulation-series :dataSource='seriesData' xName='x' yName='y'> </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
</template>
<script>
import Vue from "vue";
import { AccumulationChartPlugin, PieSeries, AccumulationAnnotation } from "@syncfusion/ej2-vue-charts";

Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      seriesData: [{ x: 'Jan', y: 3 }, { x: 'Feb', y: 3.5 }, { x: 'Mar', y: 7 }, { x: 'Apr', y: 13.5 },{ x: 'May', y: 19 }, { x: 'Jun', y: 23.5 }, { x: 'Jul', y: 26 }, { x: 'Aug', y: 25 },
            { x: 'Sep', y: 21 }, { x: 'Oct', y: 15 }],
        annotations:[{
        content:'<div style="border: 1px solid black;background-color:#f5f5f5; padding: 5px 5px 5px 5px">Jan : 13.5</div>',
        region: 'Series',
        coordinateUnits: 'Point',
        x: 'Jan',
        y: 3,
        verticalAlignment:'Top',
        horizontalAlignment:'Near'
    }]
    };
  },
  provide: {
     accumulationchart: [AccumulationAnnotation, PieSeries]
  }
};
</script>
<style>
#container {
     height: 350px;
 }
</style>