Flutter Gauges: A Comprehensive Guide to Visualizing Data

Published on by Flutter News Hub

Flutter Gauges: A Comprehensive Guide to Visualizing Data

Enhance Your Flutter App with Linear and Radial Gauges

Syncfusion's Flutter Gauges library empowers you with the tools to create stunning, data-rich visualizations for your Flutter applications. This library offers two powerful gauge types: Linear Gauge and Radial Gauge, each tailored to specific data representation needs.

Linear Gauge: A Versatile Choice for Linear Data

The Linear Gauge is a horizontal or vertical gauge that excels at displaying data on a linear scale. It boasts a range of features, including:

  • Customizable axis: Control the appearance and behavior of the axis, including thickness, tick marks, and labels.
  • Multiple ranges: Define multiple ranges with distinct colors to highlight specific data values.
  • Pointer interaction: Enable drag-and-drop functionality for pointers, making it easy to adjust values on the fly.
  • Animation: Animate gauge elements for visually appealing data updates.

Radial Gauge: A Circular Showcase for Data

The Radial Gauge is a circular gauge that presents data on a circular arc. It offers a wide array of options for data visualization, such as:

  • Customizable axis: Create radial axes with custom scales, including linear scales for precise value representation.
  • Ranges: Add color-coded ranges to denote different data regions.
  • Pointers: Choose from a variety of pointer types, including needle pointers for precise value indication.
  • Annotation: Display additional information on the gauge using text or images.

Getting Started with Flutter Gauges

To incorporate gauages into your Flutter project, follow these simple steps:

  1. Install the syncfusion_flutter_gauges package from pub.dev.
  2. Import the syncfusion_flutter_gauges package in your Dart code.

Add a Linear Gauge

SfLinearGauge(
  ranges: [
    LinearGaugeRange(startValue: 0, endValue: 50),
    LinearGaugeRange(startValue: 50, endValue: 100),
  ],
  markerPointers: [
    LinearShapePointer(value: 50),
  ],
)

Add a Radial Gauge

SfRadialGauge(
  axes: [
    RadialAxis(
      minimum: 0,
      maximum: 150,
      ranges: [
        GaugeRange(startValue: 0, endValue: 50, color: Colors.green),
        GaugeRange(startValue: 50, endValue: 100, color: Colors.orange),
        GaugeRange(startValue: 100, endValue: 150, color: Colors.red),
      ],
      pointers: [
        NeedlePointer(value: 90),
      ],
    ),
  ],
)

Conclusion

Syncfusion's Flutter Gauges library provides a comprehensive solution for visualizing data with precision and style. Whether you need to display linear or circular data, this library has the tools to create stunning, interactive gauges that enhance the user experience of your Flutter applications.

Flutter News Hub