Line Chart Widget

General Setting

User can change following things in Line Chart widget:

• Name for widget which will be used data reference. For Example, if widget name is 'Line Chart', then data of widget is referenced as Line Chart.data

• Show title - User can show/hide widget title

• Title Color

• Background Color

Configure Line Chart Widget

Widget Setting

In Widget Setting option, user can change following parameters:

• Show Grid - Enable to show grid inside the chart

• Show Legend - Enable to show chart legends

• X Legend - String value as a Legend for the X Axis

• Y Legend - String value as a Legend for the Y Axis

• Visible Points - Integer value to show maximum visible points on Chart

• Type - Two types of Line Chart are available

  • XY Chart - It will take values from X Key and Y Keys configured below.

  • Timeseries Chart - It will plot Y Keys configured against the timestamp data.

• Time Format - Two time format are supported. This are only considred in case of Timeseries chart.

  • HH:mm:ss

  • DD-MM-YYYY

• X Key - key parameter of JSON Object which will define X-Axis Data for Line Chart Widget.

• Y Keys - Key parameter of JSON Object which will define Y-Axis Data for Line Chart Widget.

• Show Grid X - Enable to show X Axis Grid Lines

• Show Grid Y - Enable to show Y Axis Grid Lines

Configure Line Chart Widget

Configure Line Chart Widget

Source

User can select a source mode as MQTT or Action.

Using MQTT

Here, to update data on Line Chart user can publish JSON object/array on given data MQTT topic. No need to provide <account_id> while providing the MQTT topic. The JSON object will be as below.

// Example 1
// XY Line Chart is selected

[
  {
    "xData": "Div A",
    "yData": 116,
    "zData": 60
  },
  {
    "xData": "Div B",
    "yData": 86,
    "zData": 40
  },
  {
    "xData": "Div C",
    "yData": 20,
    "zData": 30
  }
]

// here 'xData' is set as XKey and 'yData' and 'zData' are set as yKeys.

// Example 
// Timeseries Line Chart is selected

{
    "yData":116,
    "zData":60
}

// here 'yData' and 'zData' are set as yKeys. 

Configure Line Chart Widget

Using Action

Here, to update the Line Chart widget, output of the action should contain JSON object/array as given in above example. User can also update the widget either onLoad or periodically by providing refresh interval.

Configure Line Chart Widget

Event Handling

Line Chart widget does not support any event.

Examples

Here, data in below format published on configured topic, will appear as shown in image.

1. XY Line Chart

// XY Line Chart is selected

[
  {
    "xData": "Div A",
    "yData": 116,
    "zData": 60
  },
  {
    "xData": "Div B",
    "yData": 86,
    "zData": 40
  },
  {
    "xData": "Div C",
    "yData": 20,
    "zData": 30
  }
]

// here 'xData' is set as XKey and 'yData' and 'zData' are set as yKeys.

XY Line Chart Example

2. Timeseries Line Chart

Here, point on chart will get plot at the time it is received from configured source.

// Timeseries Line Chart is selected

{
    "yData":116,
    "zData":60
}

// here 'yData' and 'zData' are set as yKeys. 

Timeseries Line Chart Example