dual-axis-line-chart

Chart style

A dual-axis line chart is a type of line chart. Unlike a basic line chart, each category corresponds to two values and only two data series are supported. It combines lines and areas to display two-dimensional data trends.

Style Panel

• Search Configuration: Click the Search configuration items icon in the upper-right corner of the Style panel. In the search panel, enter a configuration item name to locate it. Fuzzy match is supported. For more information, see Search configuration items.

• Size: the width and height of the widget. Unit: pixels.

• Positioning: the x-axis and y-axis of the component. Unit: pixels. X-coordinate indicates the pixel distance between the upper-left corner of the widget and the left border of the canvas. Y-coordinate indicates the pixel distance between the upper-left corner of the widget and the upper border of the canvas.

• Rotate: the rotation angle of the widget around its center. Unit: degrees.

  • Enter a value in the Rotation Angle spin box, or click the plus (+) or minus (-) sign to adjust it.

  • Click the icon to flip the widget style.

  • Click the icon to flip the widget style.

• Opacity: Valid values: 0 to 1. A value of 0 hides the widget, and a value of 1 fully displays it. Default value: 1.

• Chart name

  • Margin: the distance between the chart area and the top, bottom, left, and right borders of the widget. Unit: pixels.

  • Nullable Data: If you turn on the switch, the line passes through points with a y-axis value of 0.

  • Maximum Load: The maximum number of data records to load. The system uses this limit for layout, rendering, and computation to ensure application performance.

  • Legend: the style of the legend. You can click the icon to display or hide the legend.

    Parameter	Description
    Text	Set the style of the legend text, including the text font style, font size, font color, and font weight. For more information, see color picker instructions.
    Layout	The positional layout of the legends. Spacing Left and Right Spacing: The horizontal distance between adjacent legends. This configuration item is valid only when multiple series exist. Distance: the distance between the legend and the upper and lower boundaries of the widget. Position: the position of the legend relative to the start coordinates of the widget. Valid values: Top Left, Top Center, Top Right, Bottom Left, Bottom Center, and Bottom Right.

• Coordinate Axis: The component coordinate axes include the x-axis, y-axis, and z-axis.

  • X Axis

    • X Axis Visible: If you turn on the switch, the x-axis style in the widget is visible. If you turn off the switch, the x-axis style in the widget is invisible.

    • Data Type: the type of the x-axis label data. This parameter is optional.

      Parameter	Description
      Numeric Type	Supports numeric data such as integers and floating-point numbers.
      Category Type	Supports category data such as characters and strings.
      Time Type	Time data requires a configured data format.

    • Both Ends: the padding between the two ends. Valid values: 0 to 1.

    • Range: the range of the maximum and minimum values of the data on the x-axis. This parameter is available only when the Data Type parameter is set to Numeric or Time.

      • Maximum Value: the maximum value of the x-axis. You can specify a custom value. The default value is auto, which means the system automatically calculates the value based on the maximum value, minimum value, and number of labels.

      • Minimum Value: the minimum value of the x-axis. You can specify a custom value. The default value is auto, which means the system automatically calculates the value based on the maximum value, minimum value, and number of labels.

    • interval: the percentage of the gap between two categories on the x-axis. A larger value indicates a wider gap. Valid values: 0 to 1. This value is available only when Data Type is set to Category.

    • data format: the data display format. Valid only for time data. Configure the format by referring to %Y/%m/%d %H:%M:%S. This parameter is available only when the Data Type parameter is set to Time.

    • Axis Label: the style of the x-axis label. You can click the icon to display or hide the x-axis label.

      Note

      If the data format and display format are inconsistent, the widget may not display correctly.

      Parameter	Description
      Display Format	The data display format. Valid only for time and numeric data. For time, use the %m/%d%Y%H:%M:%S format. For integers, use d. For floating-point numbers, use .1f.
      Text	The text style of the x-axis label, including font style, font size, font color, and font weight. For more information, see the color picker description.
      Axis Label Display	The display style of the x-axis labels, including: Offset: the distance between the labels on the x-axis. Unit: pixels. Angle: the angle of the x-axis label. Valid values: Horizontal, Oblique, and Vertical. Quantity: the number of labels on the x-axis. Axis Unit: the unit of the x-axis label.

    • Axis: the style of the x-axis. You can click the icon to display the x-axis.

      Color: the color of the x-axis.

    • Gridlines: the style of the x-axis gridlines. You can click the icon to display or hide the x-axis gridlines.

      Color: the color of the x-axis grid lines.

  • Y-axis

    The left y-axis configuration is similar to the x-axis. For details, see the x-axis section.

  • Z axis

    The right vertical axis. The configuration is similar to the x-axis. For details, see the x-axis section.

• Series: The component series includes Series Y and Series Z.

  Note

  By default, a dual-axis line chart has two series for configuring the data and style of the y-axis and z-axis respectively, including series names, line styles, dot styles, and area styles.

  • Series Name: the name of the series.

  • Line: the style of the line in the series.

    Parameter	Description
    thickness	The thickness of the line.
    Curve Type	The type of the line. You can select Smooth Curve or Line.
    Mode	The type of the line. You can select Solid Line, Dotted Line, or Dashed Line.
    Color	The color of the line.

  • Dot: the style of the dots on the line. You can click the icon to show or hide the dots.

    Parameter	Description
    Radius	The radius of the dot. Unit: pixels.
    Color	The color of the dots.

  • Area: the style of the area under the line. You can click the icon to show or hide the area.

    Color: the color style of the area. Color and Gradient Fill are supported.

  • Value Label: the value label style of the line in this series, including the font style, weight, font size, and color of the label text. Click the icon to control the display of value labels.

• Remarks

  • Ease Animation: the animation effect style of the chart. You can click the icon to enable or disable the animation effect.

    Parameter	Description
    Animation Settings	Ease Effect: the easing effect of the animation. The system provides a variety of common easing effects for you to choose from. Sequential Animation: If you turn on the switch, the animation of each series is played in sequence. If you turn off the switch, the animation of all series is played together.
    Admission Animation	The duration of the first animation rendered by the component. Unit: ms.
    Update Animation	Update Animation Duration: the duration of the animation when the widget data is updated. Unit: ms. Start From Previous Position: If you turn on the switch, the animation starts from the previous position when the widget data is updated. If you turn off the switch, the animation starts from the initial position when the widget data is updated.

  • dialog box: the tooltip that appears when you hover over or click a data point on a preview or published page. Click the icon to show or hide the tooltip.

    Parameter	Description
    Trigger	Trigger Type: the type of target that triggers the tooltip. This parameter is optional, including Data Item and Axis. Trigger Action: the action that triggers the tooltip. This parameter is optional, including Hover and Click.
    Text Style	The style of the text in the dialog box, including the font style, weight, font size, and color.
    Disappearing Delay Time	When the trigger condition is no longer met, the tooltip disappears after this delay. Unit: ms.
    Background Box Style	The background box style of the dialog box. Background Color: the background color of the dialog box. Custom: the width and height of the dialog box. Unit: pixels. Click the icon to turn custom dialog box on or off. Pin: the inner margin of the dialog box. Unit: pixels. Offset Horizontal Offset: the horizontal offset of the dialog box relative to the mouse arrow. Unit: px. Vertical Offset: the vertical offset of the dialog box relative to the mouse arrow. Unit: px. Borders Border Size: the border size of the dialog box. Unit: pixels. Border Color: The border color of the dialog box.

Data Sources panel

Advanced Panel

When you click a data item: Turn on the switch to enable widget interaction. When a data point on the dual-axis line chart is clicked, a data request is triggered and a temporary variable is emitted to dynamically load data for different data points. By default, the x, y, and z values in the data are displayed. For more information, see Component interaction configuration.

Blueprint Interaction

1. Click the icon in the upper-left corner to go to the Blueprint page.

2. On the Layer Nodes tab, add the widget to the main canvas.

3. View blueprint configuration parameters.

   • Event

     Event	Description
     When the dual axis line chart interface request is completed	After a data interface request is responded to and processed by a filter, this event is triggered with the processed JSON data. For more information about specific data examples, see the Data Response Result section of the Data Source tab in the right-side configuration panel of the canvas editor.
     When a data item is clicked	The event triggered when a data point on the dual-axis line chart is clicked, along with the corresponding data item.

   • Action

     Action	Description
     Import dual axis line chart Interface	After widget data is formatted for rendering, the widget is redrawn without requesting server data again. For more information about specific data examples, see the Data Response Result section of the Data Source tab in the right-side configuration panel of the canvas editor.
     Request dual axis line chart Interface	Requests server data again, using data from an upstream data processing node or layer node as a parameter. For example, if the dual-axis line chart API data source is configured as https://api.test and the data passed to the request dual axis line chart interface is { id: '1'}, the final request URL is https://api.test?id=1.
     Highlight	data: the data item to be highlighted. { x: '2010/01/01 00:00:00' } Reference data example { "data": {}, "options": {} }
     Unhighlight	data: the data item that needs to be unhighlighted. If the data field is not specified, all highlighted data is unhighlighted. { x: '2010/01/01 00:00:00' } Reference data example { "data": {}, "options": {} }
     Clear components	Clear the widget data. No parameters are required.
     Move	Move a widget to a specified location. See the data example for details. { // The positioning type. to indicates absolute positioning, whereas by indicates relative positioning. The default value is to. "positionType": "to", // The location, which is indicated by the x and y coordinates. "attr": { "x": 0, "y": 0 }, // The animation type. "animation": { "enable": false, // The animation delay. Unit: milliseconds. "animationDuration": 1000, // The animation curve, which can be set to linear|easeInOutQuad|easeInOutExpo. "animationEasing": "linear" } }
     Switch Display /Hide	Toggle the visibility of a widget. No parameters are required.
     Display	Display the widget. See the data example for details. { "animationType": "",// The animation method. Valid value: fade. If you do not specify this parameter, no animation is generated. "animationDuration": 1000,// The animation delay. Unit: ms. "animationEasing": ""// animation curve }
     Hide	Hide the widget. See the data example for details. { "animationType": "",// The animation method. Valid value: fade. If you do not specify this parameter, no animation is generated. "animationDuration": 1000,// The animation delay. Unit: ms. "animationEasing": ""// animation curve }
     Update component configurations	Dynamically update widget style configurations. In the Style panel, click Copy Configuration to Clipboard to obtain the widget configuration data. Then, modify the style field in the data processing node in Blueprint Editor.