Line Chart

The Ignite UI for Angular line chart belongs to a group of category charts and it is rendered using a collection of points connected by straight line segments. Values are represented on the y-axis and categories are displayed on the x-axis. IgxLineSeriesComponent emphasizes the amount of change over a period of time or compares multiple items as well as the relationship of parts to a whole by displaying the total of the plotted values. The Angular line chart is identical to the Angular spline chart in all aspects except that line connecting data points do not have spline interpolation and smoothing for improved presentation of data.

Demo

Required Axes

The Angular data chart component provides various types of axes but only the following types of axes can be used with IgxLineSeriesComponent.

Required Data

The IgxLineSeriesComponent has the following data requirements:

  • The data source must be an array or a list of data items.
  • The data source must contain at least one data item otherwise the chart will not render the IgxLineSeriesComponent.
  • All data items must contain at least one data column (string or date time) which should be mapped to the Label property of the category axis (e.g. IgxCategoryXAxisComponent)
  • All data items must contain at least one numeric data column which should be mapped using the ValueMemberPath property of the IgxLineSeriesComponent.

You can use the SampleCategoryData as data source which meets above data requirements.

public dataSource: any[] = SampleCategoryData.create();

Required Modules

Creation of the IgxLineSeriesComponent requires the following modules:

// axis' modules:
import { IgxCategoryXAxis } from 'igniteui-angular-charts';
import { IgxNumericYAxis } from 'igniteui-angular-charts';
// series' modules:
import { IgxLineSeries } from 'igniteui-angular-charts';
// data chart's modules:

import { IgxDataChartCoreModule } from 'igniteui-angular-charts';
import { IgxDataChartCategoryModule } from 'igniteui-angular-charts';

@NgModule({
    imports: [
        // ...
        IgxDataChartCoreModule,
        IgxDataChartCategoryModule,
        // ...
    ]
})

Code Example

This code demonstrates how to create an instance of the Ignite UI for Angular data chart with IgxLineSeriesComponent and bind it to a data source.

 <igx-data-chart
    [dataSource]="dataSource"
    width="700px"
    height="500px">
    <igx-category-x-axis name="xAxis" label="Year"></igx-category-x-axis>
    <igx-numeric-y-axis  name="yAxis"></igx-numeric-y-axis>
    <igx-line-series
        name="series1"
        xAxisName="xAxis"
        yAxisName="yAxis"
        valueMemberPath="USA">
    </igx-line-series>
 </igx-data-chart>

Additional Resources