Angular Chart - series

A series represents a grouping of related data points. The most important characteristic of a series is its type, which determines a particular visual representation of data. You can find more details on each series type in the corresponding topics in the Series help section.

To define a single series, assign an object defining the series to the series configuration object. In the series' object, specify the series type, data source fields, the appearance of the series points and other options.

To show several series, specify series as an array of objects defining series. If you need to set similar values to properties of several series, use the commonSeriesSettings configuration object. It exposes the properties that can be specified for all series at once and for all series of a particular type at once. Note that the values specified for a series individually (in the series array) override the values that are specified for all series (in the commonSeriesSettings object).

If the Chart contains many series points, displaying all of them may lower its performance. In this case, it is better to aggregate the series points, or replace a group of them with a single point. The group includes only those points that fall within the same interval on the argument axis. See aggregationInterval and aggregationGroupWidth for details on dividing the axis into intervals.

The Chart provides several aggregation methods, which differ depending on the series type, and a capability to implement a custom aggregate function. To enable data aggregation for the series, set the aggregation.enabled option to true.

See Also

• Points Aggregation Demo: Milti-Series Chart | Financial Chart
• Data Aggregation

In the Cartesian coordinate system, each point is characterized by a pair of coordinates (X, Y). In the Chart widget, X's are provided by the argumentField; Y's are provided by the valueField.

Commonly, a chart contains several series, and many of them have the same argument field. In this case, assign the name of this field to the argumentField property of the commonSeriesSettings object. If a series must have a unique argument field, specify the same property, but do so in the series object within the series array.

When there are multiple value axes in a chart, series need to know exactly which axis they are bound to. By default, all of them are bound to the first axis in the valueAxis array. To bind a series to another axis, assign the name of the axis to the axis series property.

View Demo

This option accepts a value from 0 to 1 that specifies the correlation between the empty space on a bar's sides and the bar's width: 0 - the bar occupies the whole allocated space; 1 - virtually hides the bar creating a lot of empty space.

See Also

• Specify the Bar Width
• barGroupPadding
• series.minBarSize

See Also

• Specify the Bar Width
• barGroupWidth
• series.minBarSize

Declared in commonSeriesSettings, the border settings apply to all series in the chart. Declared in a series configuration object, the border settings apply to this particular series only. The series-specific border settings override the common ones.

Each point in a financial series has one argument and four values. Arguments are provided by the argumentField; values are provided by the openValueField, closeValueField, highValueField and lowValueField.

If you use a series template, specify the value field properties in the commonSeriesSettings object. Otherwise, do this in the series object within the series array.

This option supports the following colors:

• Hexadecimal colors
• RGB colors
• RGBA colors
• Predefined/cross-browser color names
• Predefined SVG colors

Specified in the commonSeriesSettings object, this option colors all series in the chart. To color an individual series, specify this option in the series object within the series array.

This option accepts one of the following values.

• solid
  Displays a solid, continuous series line.
• dash
  Displays the series line using short dashes.
• longDash
  Displays the series line using long dashes.
• dot
  Displays the series line using dots.
• Any combination of 'longDash', 'dash' and 'dot'
  Displays the series line by repeating the specified combination. For example, 'dashdotdash'.

Use the DashStyle enum to specify this option when the widget is used as an ASP.NET MVC Control. This enum accepts the following values: Solid, LongDash, Dash, and Dot.

Each point in a financial series has one argument and four values. Arguments are provided by the argumentField; values are provided by the openValueField, closeValueField, highValueField and lowValueField.

If you use a series template, specify the value field properties in the commonSeriesSettings object. Otherwise, do this in the series object within the series array.

Depending on the series type, this option accepts different values. For information on them, visit the Series Types section, choose the employed series type and refer to its hoverMode option description.

Declared in commonSeriesSettings, hoverStyle applies to all series in the chart. Declared in a series configuration object, hoverStyle applies to this particular series only. The series-specific hoverStyle overrides the common one.

Data points that have the null argument or value do not produce actual series points. Because of this, series may be drawn with unnecessary gaps where missing points should have been. To remove these gaps, set the ignoreEmptyPoints option to true.

See Also

• reduction - specifies the price reduction options for financial series.
• color - colors the frame of a series point in candlestick series.

Declared in commonSeriesSettings, the label settings apply to all point labels in the chart. Declared in a series configuration object, the label settings apply only to the point labels that belong to this particular series. The series-specific label settings override the common ones.

$(function() {
    $("#chartContainer").dxChart({
        // ...
        series: [{
            label: {
                // Settings for all point labels of an individual series
            }
        }, {
            // ...  
        }],
        commonSeriesSettings: {
            label: {
                // Settings for all point labels in the Chart
            }
        }
    });
});

<dx-chart ... >
    <dxi-series>
        <dxo-label ... >
            <!-- Settings for all point labels of an individual series -->
        </dxo-label>
    </dxi-series>
    <dxo-common-series-settings ... >
        <dxo-label ... >
            <!-- Settings for all point labels in the Chart -->
        </dxo-label>
    </dxo-common-series-settings>
</dx-chart>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    // ...
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxChartModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxChartModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }

<template>
    <dx-chart ... >
        <dx-series ... >
            <dx-label ...>
                <!-- Settings for all point labels of an individual series -->
            </dx-label>
        </dx-series>
        <dx-common-series-settings ... >
            <dx-label ... >
                <!-- Settings for all point labels in the Chart -->
            </dx-label>
        </dx-common-series-settings>
    </dx-chart>
</template>

<script>
import DxChart, {
    DxSeries,
    DxLabel,
    DxCommonSeriesSettings
} from 'devextreme-vue/chart';

export default {
    components: {
        DxChart,
        DxSeries,
        DxLabel,
        DxCommonSeriesSettings
    },
    // ...
}
</script>

import React from 'react';

import Chart, {
    Series,
    Label,
    CommonSeriesSettings
} from 'devextreme-react/chart';

class DxComponent extends React.Component {
    render() {
        return (
            <Chart ... >
                <Series ... >
                    <Label ... >
                        // Settings for all point labels of an individual series
                    </Label>
                </Series>
                <CommonSeriesSettings ... >
                    <Label ... >
                        // Settings for all point labels in the Chart
                    </Label>
                </CommonSeriesSettings>
            </Chart>
        );
    }
}
export default DxComponent;

See Also

• customizeLabel

Each point in a financial series has one argument and four values. Arguments are provided by the argumentField; values are provided by the openValueField, closeValueField, highValueField and lowValueField.

If you use a series template, specify the value field properties in the commonSeriesSettings object. Otherwise, do this in the series object within the series array.

If the number of points in a series increases over time, there comes a time when it becomes so massive that displaying labels for them makes the chart too cluttered. In this instance, to keep the chart clear to the viewer, specify a limit for the number of point labels using the maxLabelCount option. Once this limit is exceeded, all point labels of the series will be hidden.

If the disparity between the smallest and largest values in the data source is considerable, small values are visualized by tiny bars that may be difficult to interact with. In this case, specify the minimal possible height (or length if the chart is rotated) for bars using the minBarSize option.

See Also

• barPadding
• barWidth

This option accepts a value from 0 to 1, where 0 makes the series completely transparent, and 1 makes it opaque.

Each point in a financial series has one argument and four values. Arguments are provided by the argumentField; values are provided by the openValueField, closeValueField, highValueField and lowValueField.

If you use a series template, specify the value field properties in the commonSeriesSettings object. Otherwise, do this in the series object within the series array.

If this option is not specified, the series will belong to the default pane.

See Also

• panes - declares a collection of panes.

View Demo

Declared in commonSeriesSettings, the point settings apply to all points in the chart. Declared in a series configuration object, the point settings apply only to the points that belong to this particular series. The series-specific point settings override the common ones.

See Also

• customizePoint - сustomizes the appearance of an individual series point.

Each point in a range-like series has one argument and two values. Arguments are provided by the argumentField; values are provided by the rangeValue1Field, rangeValue2Field.

If you use a series template, specify the value field properties in the commonSeriesSettings object. Otherwise, do this in the series object within the series array.

Each point in a range-like series has one argument and two values. Arguments are provided by the argumentField; values are provided by the rangeValue1Field, rangeValue2Field.

If you use a series template, specify the value field properties in the commonSeriesSettings object. Otherwise, do this in the series object within the series array.

Each point in a financial series has four values or "prices": high, low, open and close. To mirror the changes on the market more clearly, the widget compares the price of every point with the price of the previous point. Those points whose price has decreased are painted in a specific color. To specify whether high, low, open or close prices of points should be compared, use the level option.

Depending on the series type, this option accepts different values. For information on them, visit the Series Types section, choose the employed series type and refer to its selectionMode option description.

View Demo

Declared in commonSeriesSettings, selectionStyle applies to all series in the chart. Declared in a series configuration object, selectionStyle applies to this particular series only. The series-specific selectionStyle overrides the common one.

Each point in a bubble series has an argument, a regular value and a size value. Arguments are provided by the argumentField; regular values are provided by the valueField; size values are provided by the sizeField.

Size values do not specify the real sizes of bubbles directly, they only define the sizes of bubbles in relation to each other. Apart from a size value, the real, pixel-measured size of a bubble depends on the minBubbleSize and maxBubbleSize values and the size of the pane.

Commonly, a chart contains several series, and many of them have the same size field. In this case, assign the name of this field to the sizeField property of the commonSeriesSettings object. If a series must have a unique size field, specify the same property, but do so in the series object within the series array.

By default, all series are placed in the same stack. In case you need to distribute them between several side-by-side stacks, specify the stack series property. Series with the same stack value will be collected in a single stack. The number of stacks is unlimited.

View Demo

This option allows you to associate virtually any required data with a series point. This data will be stored in the tag field of the Point object.

Commonly, a chart contains several series, and many of them have the same tagField value. In this case, specify the tagField property in the commonSeriesSettings object. If a series must have a unique tagField value, specify the same property, but do so in the series object within the series array.

See Also

• series.tag - associates data with an entire series.

Error bars are used on charts to indicate an error or an uncertainty in a reported measurement. They give a general idea of how precise the measurement is.

Error bars can be generated either from concrete or calculated values. To generate one error bar, two values, high and low, are needed. If the data source of your chart provides concrete high and low values, assign the required data source fields to the highValueField and lowValueField options.

Alternatively, error bar values can be calculated according to an algorithm. In this case, choose the required algorithm using the type option, and specify the value to be used in calculation using the value option.

View Demo

In the Cartesian coordinate system, each point is characterized by a pair of coordinates (X, Y). In a common case, X's are provided by the argumentField; Y's are provided by the valueField.

Certain series types require more than one value field, because their points are characterized by a larger number of coordinates. These series types are:

• Range-like series types
  Range bar and range area require two value fields: rangeValue1Field and rangeValue2Field.
• Financial series types
  Stock and candlestick require four value fields: openValueField, closeValueField, highValueField and lowValueField.

If you use a series template, specify the value field properties in the commonSeriesSettings object. Otherwise, do this in the series object within the series array.

See Also

• Series.show() - shows the series at runtime.
• Series.hide() - hides the series at runtime.