angularjs-gauge

v2.2.0

Published

2 years ago

A Gauge directive for Angular 1.x apps and dashboards

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ashish-chopra

angular gauge speedometer js dial semi full arc

angular-gauge

A reusable gauge directive for Angular 1.x apps and dashboards. It provides many configurationable options to customize according to your needs. Checkout the live demo here.

If you are looking for Gauge Component for Angular 4 and beyond, checkout ngx-gauge.

alt text

NOTE: In angular-gauge 2.x, some breaking changes have been introduced. If you are upgrading from v1.x.x version to v2.x.x then checkout the Upgrade Guide first.

Usage

Install using npm

npm install angularjs-gauge

Install using Bower

bower install angularjs-gauge

Install manually

git clone https://github.com/ashish-chopra/angular-gauge.git

Copy the files from dist/ manually into your project folder.Then, add the script to your code (after adding the dependency of Angular 1.5) and resolving the paths as given below:

<head>
  ...
<head>
<body>
  ...
</body>
  <script src="vendor/angular/angular.min.js"></script>
  <script src="vendor/angularjs-gauge/dist/angularjs-gauge.min.js"></script>

Add as dependency in your module

angular.module('yourApp', ['angularjs-gauge']);

Use it in your HTML markup like this

<ng-gauge size="200" type="full" thick="5" min="0" max="120" value="68.2" cap="round" label="Speed"  foreground-color="#ffcc66" background-color="rgba(255,255,255, 0.4)" append="mph"></ng-gauge>

If you face any problem, then raise an issue here.

Config Options

There are plenty of configurable options available to tune the Gauge as per your needs.

| Name | Description | Required | Default value | Possible values | | --- | --- | --- | --- | --- | | size | Specifies the size of the canvas in which Gauge will be drawn. It is used as width and height both. | No | 200 | Positive Integer | | type | Specifies the gauge's type. | No | "full" | "full", "semi", "arch" | | min | Specifies the minimum numeric value for gauge's scale. | No | 0 | Any numeric value | | max | Specified the maximum numeric value for gauge's scale. | No | 100 | Any numeric value | | value | Specifies the current value of the Gauge in the range specified by min and max. It is a required attribute. | Yes | undefined | Any numeric value | | cap | The style of line ending at the gauge's end. | No | "butt" | "round", "butt" | | thick | Specified the thickness of the gauge's bar. | No | 6 | Any Positive Integer | | label | Specifies the text to display below the Gauge's reading. | No | undefined | Any String | | foreground-color | Specifies the foreground color of the Gauge's scale. | No | rgba(0, 150, 136, 1) | Any color value string | | background-color | Specifies the background color of the Gauge's scale.| No | rgba(0, 0, 0, 0.1) | Any color value string | | append | Specifies a string appended to the Gauge's reading. For example "%" most commonly used. | No | undefined | Any string | | prepend | Specifies a string prepended to the Gauge's reading. For example "$" in case of financial data displayed in Gauge. | No | undefined | Any String | | duration | Specifies the duration (in milliseconds) of the Gauge's animation | No | 1500 | Positive Integer | | thresholds | Specifies an object of threshold values at which the gauge's color changes. Checkout an example here. | No | none | {} | | label-only | Only label specified by label attribute is shown, when set to true. | No | false | true, false | | fraction-size | Number of decimal places to round the number to. If this is not provided then the fraction size is computed from the current locale's number formatting pattern. | No | none | Positive Integer |

Global Defaults

angular-gauge ships with a provider to globally set config options for all gauge instances used in the application during angular config phase. You can specify ngGaugeProvider dependency during config phase. It supports a single API to set config options:

ngGaugeProvider.setOptions(customOptions);

Here, customOptions is an object {} where keys are the configOptions name (in camelCase notation), mentioned in above section. For example, let see how to set size, cap, thick, foreground-color and background-color options globally using provider as shown below:


angular
  .module('myApp', ['angularjs-gauge'])
  .config(configApp);

  configApp.$inject = ['ngGaugeProvider'];
  function configApp(ngGaugeProvider) {

    // setting the default parameters for
    // gauge instances globally.
    ngGaugeProvider.setOptions({
        size: 250,
        cap: 'round',
        thick: 15,
        foregroundColor: "#ff8645",   // note the camelCase notation for parameter name
        backgroundColor: "#e4e4e4"
    });

  }

Configure Threshold Color Ranges

You can customize the colors of the gauge based on the current value being shown. This feature is introduced in v2.1.0. Make sure to update your local copy before using this feature.

In order to show different colors when gauge crosses certain value, use property thresholds. It takes an object with the threshold value as key and an object with color property as value. For example:

....

var threshold = {
  '0': {color: 'green'},
  '40': {color: 'orange'},
  '75.5': {color: 'red'}
};

....

<ng-gauge ...  thresholds="threshold"></ng-gauge>

The keys in the threshold object signifies the minimum value at which the color will be applied. For instance, if the gauge's current value is 53.2, then orange color will be applied because after point 40 every value will be displayed as orange, until next threshold is encountered. In this example 75.5 is the next threshold.

Playground

The examples section is redesigned as a playground where you can play with Gauge by tuning its different parameters. And, you can see the result live on-screen. It is good start to get familiar with Gauge.

alt text

Upgrade Guide

If you are upgrading from angular-gauge 1.x version to any version in 2.x family, then make sure to read the release notes of the chosen version on the Releases section.

Following are the breaking changes introduced in 2.x.x onwards:

used and total attributes are removed.
min and max attributes are introduced which works with value attribute. Checkout config options to know more about their usage.

Contribute

The project is continously evolving with every new release. Give it a star, if you like it. For contribution, setup the development environment as follows:

clone and setup the project dependencies

$> git clone https://github.com/ashish-chopra/angular-gauge.git
$> npm install

Use following commands based on what you'd like to do:

$> npm start             # starts the server at port 3000 and hosts the `/examples` directory.
$> npm test              # runs test suite once and exit.
$> npm run test:watch    # starts the test framework and watch for changes in code.
$> npm run build         # triggers a manual build for library, outputs at `/dist` directory.

To add a new feature or fix a bug, make sure to create a new branch from master.

First thing first, explore the issue tracker to find something to contribute. There are tons of other project setup related issues and activities in which you can help. Your feedback could also be a great contribution.

If you face any problem, then raise an issue here.

License

MIT License