Bar Chart Widget

General Setting

User can change following things in Bar Chart widget:

Name for widget which will be used data reference. For Example, if widget name is 'Bar Chart', then data of widget is referenced as Bar Chart.data
Show title - User can show/hide widget title
Title Color
Background Color

Widget Setting

In Widget Setting option, user can change following parameters:

Index By - Parameter of JSON Object which will define X-Axis Data for Line Chart Widget.
Keys - Key parameter of JSON Object which will define Y-Axis Data for Line Chart Widget.
Y Legend - string value as Y axis legend
Show Legend -Enable to show legends
Grouped -Enable to show bars as grouped. Default bar chart will be stacked bar chart.
Show grid X - Enable to show X axis grid lines
Show grid Y - Enable to show Y axis grid lines
Horizontal - Enable to show bars horizontally

Source

User can select a source mode as MQTT or Action.

Using MQTT

Here, to update data on Bar Chart user can publish JSON 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
// Grouped/Stacked Bar Chart

[
  {
    "country": "India",
    "first": 94,
    "second": 114,
    "third": 14
  },
  {
    "country": "Australia",
    "first": 22,
    "second": 65,
    "third": 16
  },
  {
    "country": "US",
    "first": 21,
    "second": 85,
    "third": 12
  }
]

// here 'country' is set as IndexBy key and 'first', 'second' and 'third' are set as yKeys.

// Example 
// Simple Bar Chart

[
  {
    "country": "India",
    "first": 94
  },
  {
    "country": "Australia",
    "first": 22
  },
  {
    "country": "US",
    "first": 21
  }
]

// here 'country' is set as IndexBy key and 'first' is set as yKey.

Using Action

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

Event Handling

Bar Chart widget does not support any event.

Examples

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

1. Simple Bar Chart

// Simple Bar Chart

[
  {
    "country": "India",
    "first": 94
  },
  {
    "country": "Australia",
    "first": 22
  },
  {
    "country": "US",
    "first": 21
  }
]

// here 'country' is set as IndexBy key and 'first' is set as yKey.

2. Stacked Bar Chart

// Grouped/Stacked Bar Chart

[
  {
    "country": "India",
    "first": 94,
    "second": 114,
    "third": 14
  },
  {
    "country": "Australia",
    "first": 22,
    "second": 65,
    "third": 16
  },
  {
    "country": "US",
    "first": 21,
    "second": 85,
    "third": 12
  }
]

// here 'country' is set as IndexBy key and 'first', 'second' and 'third' are set as yKeys.

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Last updated 2 years ago