What are the options available in Chart to place data labels in the accumulation series?

Essential chart supports customizing the placement of labels in the accumulation series by using the LabelPosition property. Pie, doughnut, pyramid, and funnel are the different types of the series. Data labels can be placed inside, outside, and at outside extended positions. Data labels overlapping can be avoided by setting the EnableSmartLabels property to true.

Inside

In the inside position, the data labels are placed inside the segments of accumulation series. The following code example illustrates this.

    <ej:Chart ID="container" CanResize="true" runat="server">
        <CommonSeriesOptions Type="Pie" LabelPosition="Inside">
            <Marker>
                <DataLabel Visible="true">
                    <Font Color="white" FontFamily="arial" FontSize="16px"></Font>
                </DataLabel>
            </Marker>
        </CommonSeriesOptions>
    </ej:Chart>

The following screenshot displays the data labels placed inside the segments of a pie series.

Figure 1: Data labels placed inside the chart

Outside

In the outside position, the data labels are placed outside the segment of the accumulation series. The following code example illustrates this.

    <ej:Chart ID="container" CanResize="true" runat="server">
        <CommonSeriesOptions Type="Pie" LabelPosition="Outside">
            <Marker>
                <DataLabel Visible="true">
                    <Font Color="black" FontFamily="arial" FontSize="16px"></Font>
                </DataLabel>
            </Marker>
        </CommonSeriesOptions>
    </ej:Chart>

The following screenshot displays the data labels at the outside position.

Figure 2: Data labels at the outside position

Outside extended

In the outside extended position, the data labels are placed outside the segments of the accumulation series. The difference between outside and outside extended placement is that the labels are present at the right and left sides of the chart area in the outside extended position; whereas, in the outside position labels are placed outside with respect to the segments instead of the Chart. The following code example illustrates this.

    <ej:Chart ID="container" CanResize="true" runat="server">
        <CommonSeriesOptions Type="Pie" LabelPosition="OutsideExtended">
            <Marker>
                <DataLabel Visible="true">
                    <Font Color="black" FontFamily="arial" FontSize="16px"></Font>
                </DataLabel>
            </Marker>
        </CommonSeriesOptions>
    </ej:Chart>

The following screenshot displays the labels at the outside extended position.

Figure 3: Data labels at the outside extended position

Sample Link: Pie Chart