Sum dynamic data

Procedure

1. Log on to the DataV console.

2. Select a visualization application and click Edit to open the canvas editor.

3. Add three ticker board widgets to the canvas.

4. Click a ticker board widget. On the configuration panel, set Title > Title to Sales in H1. In the layer panel, double-click the widget and change its name to Ticker Board-H1. Repeat this step to configure the other two ticker board widgets.

5. Select all widgets, right-click, and select Export to Blueprint Editor.

6. Add a serial processing node and a sequence execution node, and then connect the widgets.

   • Serial processing node: Generates random data when you click a ticker board. Both nodes use the same processing method. The H2 data is produced by adding a random number to the H1 data.

     var value = Math.random() * 10000
     return [
      {
      "name": "",
      "value": 12345 + value
      }
     ]

   • Sequence execution node: Saves data as a temporary variable, adds the values from the two ticker boards, and feeds the sum into the display widget.

     // Variable A
     return {
      data: [
      {
      name: "up",
      value: data[0].value || 0
      }
      ]
     };

     // Variable B
     return {
      data: [
      {
      name: "down",
      value: data[0].value || 0
      }
      ]
     };

     // A + Variable B
     let dowm = getLocalValue('dowm') || 0;
     let res = data && data.length !== 0 ? data[0].value + dowm : down
     return [{ value: res }]; 

     // B + Variable A
     let up = getLocalValue('up') || 0;
     let res = data && data.length !== 0 ? data[0].value + up : up
     return [{ value: res }]; 

7. In the upper-right corner of the page, click the icon to preview the results.