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DataV:The Radial Bar Chart widget

Last Updated:Apr 28, 2023

This topic describes the chart style and configuration panel of radial column chart.

Chart Style

A radial column chart chart is a type of column chart. Compared with a basic column chart, a radial column chart chart can more intuitively display the differences between a variety of data in a limited visualization application space.

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Settings Panel

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  • Search for Configurations: In the right-side panel of Canvas Editor, click the Settings tab, and click Search for Configurations in the upper-right corner. Enter the required configuration item in the search box, and click the search icon to quickly locate the configuration item. Fuzzy match is supported. For more information, see Search for asset configurations.
  • Size: indicates the size of a widget, including its pixel width and height. You can click the Proportional resizing icon to proportionally adjust the width and height of a widget. After you click this icon again, you can adjust the width and height as needed.
  • Position: the position of a widget, which is indicated by pixel X and Y coordinates. 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.
  • Rotation Angle: the angle of a rotation that uses the center point of a widget as the rotation point. The unit is degrees (°). You can use one of the following methods to control the rotation angle of a widget:
    • Directly enter the degrees in the Rotation Angle spin box or click the plus sign (+) or minus sign (-) to increase or decrease the value in the Rotation Angle spin box.
    • Drag the black dot in the Rotation control icon icon.
    • Click the Horizontal flip icon to horizontally flip a widget.
    • Click the Vertical flip icon to vertically flip a widget.
  • Opacity: the opacity of a widget. Valid values: 0 and 1. If this parameter is set to 0, the widget is hidden. If this parameter is set to 1, the widget is completely displayed. Default value: 1.
  • Chart Options: the style of the curved columns in the column chart. image..png

    Parameter

    Description

    Inner Radius

    The distance from the center of the circle to the inner arc of the arc-shaped column. Valid values: 0 to 1.

    Outer Radius

    The distance from the center of the circle to the outer arc of the arc-shaped column. Valid values: 0 to 1.

    Bars

    The number of columns in the radial column chart.

    Note

    If the number of columns exceeds the number of types of data, the extra columns will occupy the position in a transparent form.

    Radius Padding

    The distance between the curved columns. Unit: px.

    Max Angle

    The maximum radian of an arc-shaped column, ranging from 0 to 360. When the value is 360 (i. e. 100%), the column has the maximum radian and is circular.

    Text Padding

    The horizontal spacing start time the text and the arc column, in px.

  • Gradient Options: the color of the curved columns in the column chart. image..png

    Parameter

    Description

    Start Color

    For the color of the start point of the arc column, see color picker instructions to change the color.

    End Color

    The color of the end of the curved column.

  • Text Style: the style of the text in the column chart. image..png

    Parameter

    Description

    Font Family

    The font family of the text. Default value: Microsoft Black.

    Font size

    The font size of texts in a text box.

    Font Color

    The color of the text

    Font Weight

    The weight of the text font.

  • Animation: the animation effect of each curved column in the column chart. You can click the 开关图标icon to control whether to use this animation effect. image..png

    Parameter

    Description

    Original Duration

    The duration of the animation when the component is rendered for the first time. Unit: ms.

    Easing

    The easing effect of the animation. Optional. The system provides multiple common easing effects for you to choose from.

    Animations of All Series In Sequence

    Turn on the switch, each series of arcs play animation in sequence; turn off the switch, all arcs play animation at the same time.

    Duration for Data Update

    The duration of the animation when the widget data is updated. Unit: ms.

    Update from Latest Status

    If you turn on the switch and the widget data is updated, the animation starts from the position of the previous data. If you turn off the switch and the widget data is updated, the animation starts from the initial position.

Data Panel image..png

Configuration field description

Parameter

Description

text

The content of the text field that corresponds to the start point of each bar chart.

value

The value of the percentage field corresponding to each column chart. The value must be a decimal. The maximum value is 1. You can click the Graph Properties > Maximum Radian configuration items in the Configure panel to modify the radian of the column corresponding to the maximum value value.

Table 1. Parameters
ParameterDescription
Controlled ModeIf you turn on the switch, data is not requested when a widget is initialized. Data requests are triggered only based on callback IDs or the method configured in Blueprint Editor. If you turn off the switch, data requests are automatically triggered. By default, the switch is turned off.
Auto Data RequestAfter you select the Auto Data Request check box, you can enable dynamic polling, and manually specify the polling interval. If you do not select this check box, data is not automatically requested. You must manually refresh the page to request data or use Blueprint Editor or callback ID events to trigger data requests.
Data SourceIn the right-side panel of Canvas Editor, click the Data tab. Click Set next to Static Data. In the Configure Datasource panel, select a data source from the Data Source Type drop-down list. Enter code for data query in the code editor, click Preview Data Response to preview the response of the data source, and then view the response. For more information, see Configure asset data.
Data FilterIf you select the Data Filter check box, you can convert the data structure, filter data, and perform simple calculations. If you click the plus sign (+) next to Add Filter, you can configure the script for the data filter in the editor that appears. For more information, see Use the data filter.
Data Response ResultThe response to a data request. If the data source changes, you can click the Refresh icon icon next to Data Response Result to view the data response in real time.

Interaction Panel

This widget does not support interaction events.

Configure interactions in Blueprint Editor

  1. In Canvas Editor, right-click a widget in the Layer panel and select Add to Blueprint Editor.
  2. Click the Blueprint Editor icon icon in the upper-left corner of the page.
  3. In Blueprint Editor, click radial column chart in the Added Nodes pane. You can view the radial column chart parameters in the canvas, as shown in the following figure. image..png

    • Event

      Event

      Description

      On Completion of Chart Interface Request

      The event is triggered with the processed JSON data after a data interface request is responded and processed by a filter. For more information about specific data examples, see the Data Response Result section of the Data tab in the right-side configuration panel of the canvas editor.

      On Failure of Chart Interface Request

      The event that is returned when a data interface request fails (the request may be due to network problems or interface errors) and is processed by the filter. The event also throws the processed JSON data. For more information about specific data examples, see the Data Response Result section of the Data tab in the right-side configuration panel of the canvas editor.

    • Action

      Action

      Description

      Request Chart Interface

      This action is performed to request the server data again. The data sent by an upstream data processing node or layer node is used as a parameter. For example, if the arc column chart is configured with the API data source as https://api.test and the data passed to the request arc column chart interface as { id: '1'}, the final request interface is https://api.test?id=1.

      Import Chart Interface

      After data of a widget is processed in accordance with its drawing format, the widget is imported for redrawing. You do not need to request server data again. For more information about specific data examples, see the Data Response Result section of the Data tab in the right-side configuration panel of the canvas editor.

      Update Widget Configurations

      Style configurations of widgets are dynamically updated. Before this action is executed, you must click the widget in Canvas Editor, click the Settings tab in the right-side panel, and click Copy Configurations to... to obtain widget configurations. After that, change the style field for the data processing node in Blueprint Editor.

      Show

      Displays the widget. The following example shows the reference data.

      return{
        "animationType": "",
        "animationDuration": 1000,
        "animationEasing": "linear"
      }

      Hide

      The following example shows how to hide a widget.

      return{
        "animationType": "",
        "animationDuration": 1000,
        "animationEasing": "linear"
      }

      Hide/Show

      Specifies whether to show or hide a widget. The following example shows the reference data.

      return {
        "animationIn": {
          "animationType": "",
          "animationDuration": 1000,
          "animationEasing": "linear"
        },
        "animationOut": {
          "animationType": "",
          "animationDuration": 1000,
          "animationEasing": "linear"
        }
      }

      Move

      A widget is moved to a specified location. Examples of reference data are as follows.

          return{      
            // 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 duration in which animation is displayed. 
              "animationDuration": 1000,
              // The animation curve, which can be set to linear|easeInOutQuad|easeInOutExpo. 
              "animationEasing": "linear"
            }
          }