DataV:The Rounded Column Chart widget

Chart Style

A vertical capsule histogram is a type of column chart. Compared with the basic column chart, the vertical capsule histogram widget allows you to display multi-series data in a stacked manner. Therefore, you can intelligently display multi-dimensional data differences in a small visualization application space.

Settings Panel

• 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 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 icon.
  • Click the icon to horizontally flip a widget.
  • Click the 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

  • Margins: the distance between the column chart area and the four boundaries of the widget. Default value: px.

  • Data Limit: You can specify the maximum number of input data records to be loaded. The system loads the maximum number of input data records for layout, drawing, and computing. This ensures the visual application.

  • Column: The style of each column in the column chart.

    Parameter	Description
    Inner Padding	The distance from the column to the capsule shell. Valid values: 0 to 10. Unit: px.
    Stroke Color	The color of the capsule pillar stroke.
    Border Color	The color of the outer border of the capsule is modified according to the color picker instructions.
    Border Width	The thickness of the outer border of the capsule.

  • Value Label: the style of the value label of each column. You can click the icon to display or hide the value label.

    Parameter	Description
    Text	The font style, text weight, font size, and color of the value label text.
    Position	The position of the value label text. Valid values: Top, Middle, and Bottom.
    Empty Data	If you turn on the switch, the value tag data is still displayed in the widget column. If you turn off the switch, the value tag data is not displayed in the widget column.

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

    Parameter	Description
    Text	The font style, text weight, font size, and color of the legend text.
    Layout	The positional relationship between the legends. Padding Horizontal Padding: The distance between the left and right sides of adjacent legends. This configuration items is only valid when there are multiple series. Vertical Padding: the distance between the legend and the upper and lower boundaries of the widget and column chart. Position: the position of the legend relative to the start coordinates of the widget. You can select Top Left, Top Center, Top Right, Bottom Left, Bottom Center, or Bottom Right.

• Coordinate Axes: You can select X Axis or Y Axis.

  • X Axis

    • Show Axis: 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.

    • Left and Right Margins: the distance between the left and right sides of the x-axis. Valid values: 0 to 1.

    • Interval: the distance between columns on the x-axis. The larger the value, the thinner the column and the larger the interval. The value range is 0~0.95.

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

      Parameter	Description
      Text	The font style, text weight, font size, and color of the x-axis label text.
      Label Display	Angle: the angle of the x-axis label. Valid values: Horizontal, Incline, and Vertical. Quantity: the number of labels on the x-axis. Axis Unit: the unit of the x-axis label.

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

      Color: the color of the x-axis.

    • Grid Lines: the style of the column chart 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

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

    • Range: the range of the maximum value on the y-axis.

      Max Value: the maximum value of the y-axis. You can specify a value that you want to specify or select.

      • Data Max: the maximum value in the data.

      • Auto: The system automatically calculates the maximum value, minimum value, and the number of metric points in the data.

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

      Parameter	Description
      Data Format	The display format of the y-axis label value. Valid values: Default, 11 (Integer), 11.1 (Float), 11.11 (Float), 11%, 11.1%, and 11.11%.
      Text	The font style, text weight, font size, and color of the y-axis label text.
      Label Display	The y-axis labels show the quantity and units.

    • Axis Line: the style of the y-axis of the column chart. You can click the icon to display the y-axis.

      Color: the color of the y-axis.

    • Grid Lines: the style of the column chart y-axis gridlines. You can click the icon to display or hide the y-axis gridlines.

      Color: the color of the grid lines on the y-axis.

• Series

  data series: Click the or icon on the right to add or delete a data series. Click the or icon to configure the arrangement style of multiple data series. Click the icon to copy the selected data series configurations and add a data series with the same configurations.

  Parameter	Description
  Series Name	The name of the data series, which can be customized. If this parameter is empty, the system displays s field values in the component data as series names. If this parameter is not empty, you must ensure the order in which data is returned.
  Color	The colors column chart under this series.

• Other

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

    Parameter	Description
    Animation Settings	Easing Effect: the easing effect of the animation. The system provides a variety of common easing effects for you to choose from. Animations of All Series In Sequence: If the switch is turned on, each series of column chart will play the animation in sequence; if the switch is turned off, all columns will play the animation together.
    Entrance Animation	The duration of the first animation rendered by the component. Unit: ms.
    Update Animation	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, 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.

  • Tooltip: The style of the dialog box that appears when you move the pointer over or click the column chart on the preview or publish page. You can click the icon to turn the dialog box on or off.

    Parameter	Description
    Fade Delay	When the trigger condition is not met, the dialog box will disappear. This configuration items sets the delay time before the dialog box disappears, in ms.
    Trigger Mode	Trigger Item Type: dialog box the type of the target to be triggered. This field is optional, including Item and Axis. Trigger Action: dialog box the action to be triggered. This field 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.
    Background Box	The background box style of the dialog box. Background Color: the background color of the dialog box. Dimensions: the width and height of the dialog box. Unit: pixels. Click the icon to turn custom dialog box on or off. Padding: 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. Border Border Width: the border thickness of the dialog box. Unit: pixels. Border Color: The border color of the dialog box.

Data Panel

Configuration field description

Table 1. Parameters

Parameter	Description
Controlled Mode	If 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 Request	After 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 Source	In 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 Filter	If 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 Result	The response to a data request. If the data source changes, you can click the icon next to Data Response Result to view the data response in real time.

Interaction Panel

Select the Enable check box to enable interactions between widgets. When you click a column of a vertical capsule histogram, a data request is triggered, a callback value is thrown, and data of different columns is dynamically loaded. By default, the x, y, and s values are returned. For more information, see Configure the callback ID of a ticker board.

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 icon in the upper-left corner.

3. In Blueprint Editor, click the Rounded Column Chart widget in the Added Nodes pane. You can view the parameters in the canvas, as shown in the following figure.

   • Event

     Event	Description
     On Completion of Data 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 Data 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.
     On Click of Data Item	The event that is raised when a column of a vertical capsule histogram is clicked, along with the data item corresponding to the column.

   • Action

     Action	Description
     Request Data 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 API data source is set to https://api.test for a vertical capsule histogram and the data passed to the Request Data Interface is set to { id: '1'}, the final request interface is https://api.test?id=1.
     Import Data 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.
     Highlight	Highlight the element corresponding to the data item. Examples of reference data are as follows. return { "data": {}, "options": { "style": { "stroke": "#f00", "fill": "" }, "selectMode": "single", "cancelHighlightFirst": false } }
     Cancel Highlight	Cancels the highlighting of the element corresponding to the data item. Examples of reference data are as follows. return { "data": {}, "options": { "mode": "single" } }
     Clear Widget	Clear component data. No parameters are required.
     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" } }