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Crosshair

Crosshair has a vertical and horizontal line to view the value of the axis at mouse or touch position.

Crosshair lines can be enabled by using enable property in the crosshair.

Source
Preview
app.vue
<template>
    <div id="app">
         <ejs-chart id= "container" :title='title' :primaryXAxis='primaryXAxis' :crosshair='crosshair'>
            <e-series-collection>
                <e-series :dataSource='seriesData1' type='Line' xName='x' yName='y' name='Temperature'> </e-series>
            </e-series-collection>
        </ejs-chart>
    </div>
</template>
<script>
import Vue from "vue";
import { ChartPlugin, LineSeries, Legend, Crosshair, DateTime } from "@syncfusion/ej2-vue-charts";

Vue.use(ChartPlugin);

let series1: Object[] = [];
let point1: Object;
let value: number = 40;
let i: number;
for (i = 1; i < 500; i++) {
    if (Math.random() > .5) {
        value += Math.random();
    } else {
        value -= Math.random();
    }
    point1 = { x: new Date(1950, i + 2, i), y: value.toFixed(1) };
    series1.push(point1);
}

export default {
  data() {
    return {
      seriesData1: series1,
      primaryXAxis: {
           valueType: 'DateTime',
           labelFormat: 'yMMM'
        },
        title: "Weather Condition",
        crosshair: { enable: true }
    };
  },
  provide: {
    chart: [LineSeries, Crosshair, DateTime]
  },
};
</script>
<style>
 @import "../node_modules/@syncfusion/ej2-vue-charts/styles/material.css";
 #container {
   height: 350px;
 }
</style>

Tooltip for axis

Tooltip label for an axis can be enabled by using enable property of crosshairTooltip in the corresponding axis.

Source
Preview
app.vue
<template>
    <div id="app">
         <ejs-chart id= "container" :title='title' :primaryXAxis='primaryXAxis' :primaryYAxis='primaryYAxis' :crosshair='crosshair'>
            <e-series-collection>
                <e-series :dataSource='seriesData1' type='Line' xName='x' yName='y' name='Temperature'> </e-series>
            </e-series-collection>
        </ejs-chart>
    </div>
</template>
<script>
import Vue from "vue";
import { ChartPlugin, LineSeries, Legend, Crosshair, DateTime } from "@syncfusion/ej2-vue-charts";

Vue.use(ChartPlugin);

let series1: Object[] = [];
let point1: Object;
let value: number = 40;
let i: number;
for (i = 1; i < 500; i++) {
    if (Math.random() > .5) {
        value += Math.random();
    } else {
        value -= Math.random();
    }
    point1 = { x: new Date(1950, i + 2, i), y: value.toFixed(1) };
    series1.push(point1);
}

export default {
  data() {
    return {
      seriesData1: series1,
      primaryXAxis: {
            valueType: 'DateTime',
            crosshairTooltip: { enable: true },
            labelFormat: 'yMMM'
        },
         primaryYAxis: {
           crosshairTooltip: { enable: true }
        },
        title: "Weather Condition",
        crosshair: { enable: true }
    };
  },
  provide: {
    chart: [LineSeries, Crosshair, DateTime]
  }
};
</script>
<style>
 @import "../node_modules/@syncfusion/ej2-vue-charts/styles/material.css";
 #container {
   height: 350px;
 }
</style>

Customization

The fill and textStyle property of the crosshairTooltip is used to customize the background color and font style of the crosshair label respectively. Color and width of the crosshair line can be customized by using the line property in the crosshair.

Source
Preview
app.vue
<template>
    <div id="app">
         <ejs-chart id= "container" :title='title' :primaryXAxis='primaryXAxis' :primaryYAxis='primaryYAxis' :crosshair='crosshair'>
            <e-series-collection>
                <e-series :dataSource='seriesData1' type='Line' xName='x' yName='y' name='Temperature'> </e-series>
            </e-series-collection>
        </ejs-chart>
    </div>
</template>
<script>
import Vue from "vue";
import { ChartPlugin, LineSeries, Legend, Crosshair, DateTime } from "@syncfusion/ej2-vue-charts";

Vue.use(ChartPlugin);

let series1: Object[] = [];
let point1: Object;
let value: number = 40;
let i: number;
for (i = 1; i < 500; i++) {
    if (Math.random() > .5) {
        value += Math.random();
    } else {
        value -= Math.random();
    }
    point1 = { x: new Date(1950, i + 2, i), y: value.toFixed(1) };
    series1.push(point1);
}

export default {
  data() {
    return {
      seriesData1: series1,
      primaryXAxis: {
            valueType: 'DateTime',
             crosshairTooltip: { enable: true, fill: 'green' },
            labelFormat: 'yMMM'
        },
         primaryYAxis: {
            crosshairTooltip: { enable: true, fill: 'green' },
        },
        title: "Weather Condition",
        crosshair: {  enable: true, line: {width: 2, color: 'green'}, fill: 'green' }
    };
  },
  provide: {
    chart: [LineSeries, Crosshair, DateTime]
  }
};
</script>
<style>
 @import "../node_modules/@syncfusion/ej2-vue-charts/styles/material.css";
 #container {
   height: 350px;
 }
</style>

Note: To use crosshair feature, we need to inject Crosshair into the provide.

Trackball

Trackball is used to track a data point closest to the mouse or touch position. Trackball marker indicates the closest point and trackball tooltip displays the information about the point. To use trackball feature, we need to inject Crosshair and Tooltip into the provide.

Trackball can be enabled by setting the enable property of the crosshair to true and shared property in tooltip to true in chart.

Source
Preview
app.vue
<template>
    <div id="app">
         <ejs-chart id= "container" :title='title' :primaryXAxis='primaryXAxis' :crosshair='crosshair' :tooltip='tooltip'>
            <e-series-collection>
                <e-series :dataSource='seriesData' type='Line' xName='x' yName='y' name='John' :marker='marker'> </e-series>
                <e-series :dataSource='seriesData' type='Line' xName='x' yName='y1' name='Andrew' :marker='marker'> </e-series>
                <e-series :dataSource='seriesData' type='Line' xName='x' yName='y2' name='Thomas' :marker='marker'> </e-series>
                <e-series :dataSource='seriesData' type='Line' xName='x' yName='y3' name='Mark' :marker='marker'> </e-series>
                <e-series :dataSource='seriesData' type='Line' xName='x' yName='y4' name='William' :marker='marker'> </e-series>
            </e-series-collection>
        </ejs-chart>
    </div>
</template>
<script>
import Vue from "vue";
import { ChartPlugin, LineSeries, Legend, Crosshair, DateTime, Tooltip } from "@syncfusion/ej2-vue-charts";

Vue.use(ChartPlugin);

export default {
  data() {
    return {
        seriesData: [
            { x: new Date(2000, 2, 11), y: 15, y1: 39, y2: 60, y3: 75, y4: 85 },
            { x: new Date(2000, 9, 14), y: 20, y1: 30, y2: 55, y3: 75, y4: 83 },
            { x: new Date(2001, 2, 11), y: 25, y1: 28, y2: 48, y3: 68, y4: 85 },
            { x: new Date(2001, 9, 16), y: 21, y1: 35, y2: 57, y3: 75, y4: 87 },
            { x: new Date(2002, 2, 7), y: 13, y1: 39, y2: 62, y3: 71, y4: 82 },
            { x: new Date(2002, 9, 7), y: 18, y1: 41, y2: 64, y3: 69, y4: 74 },
            { x: new Date(2003, 2, 11), y: 24, y1: 45, y2: 57, y3: 81, y4: 73 },
            { x: new Date(2003, 9, 14), y: 23, y1: 48, y2: 53, y3: 84, y4: 75 },
            { x: new Date(2004, 2, 6), y: 19, y1: 54, y2: 63, y3: 85, y4: 73 },
            { x: new Date(2004, 9, 6), y: 31, y1: 55, y2: 50, y3: 87, y4: 60 },
            { x: new Date(2005, 2, 11), y: 39, y1: 57, y2: 66, y3: 75, y4: 48 },
            { x: new Date(2005, 9, 11), y: 50, y1: 60, y2: 65, y3: 70, y4: 55 },
            { x: new Date(2006, 2, 11), y: 24, y1: 60, y2: 79, y3: 85, y4: 40 }
              ],
      primaryXAxis: {
            title: 'Years',
            minimum: new Date(2000, 1, 1), maximum: new Date(2006, 2, 11),
            intervalType: 'Years',
            valueType: 'DateTime',
        },
        title: "Average Sales per Person",
        crosshair: {  enable: true, lineType: 'Vertical' },
        tooltip: { enable: true, shared: true, format: '${series.name} : ${point.x} : ${point.y}' },
        marker: { visible: true }
    };
  },
  provide: {
    chart: [LineSeries, Crosshair, DateTime, Tooltip]
  },
};
</script>
<style>
 @import "../node_modules/@syncfusion/ej2-vue-charts/styles/material.css";
 #container {
   height: 350px;
 }
</style>