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ember-sparkline

v0.1.3

Published

This Ember Addon provides the x-sparkline component. Given an array of numbers, it draws a line and area chart using an html5 canvas. An API is provided to style the chart.

Downloads

8

Readme

ember-sparkline Build Status

This Ember Addon provides the x-sparkline component. Given an array of numbers, it draws a line chart and an area chart using an html5 canvas. A subset of styles can be passed in.

Installation

ember install ember-sparkline

Usage

First, setup some data.

export default Route.extend({
  model() {
    return [1, 2, 3, 7, 20, 13, 2, -10, 5, 12];
  }
});

Declare a sparkline component in your template, passing in points.

<h1>My Sparkline</h1>
{{x-sparkline points=model class="my-sparkline"}}

Create some styles to size its dimensions.

.my-sparkline {
  width: 100px;
  height: 100px;
}

x-sparkline simply draws an array of numbers, assuming the interval between each point is the same. This means you can't draw a chart for data with non regular intervals in the x axis.

The dummy app illustrates how you could transform appropriate data and rig up styling.

Also note, you cannot provide a separate view range. Every point in the points array will be drawn. If you only want to render a section of your data set, you'll need to prepare/transform this in a wrapping component or your route.

API

/**
 * The data points that will be drawn on the chart.
 * @type {[number]}
 */
points: null,

/**
 * Line width
 * @type {number}
 */
lineWidth: 1,

/**
 * Stroke style
 * @type {string}
 */
strokeStyle: 'rgba(28, 162, 230, 1)',

/**
 * Gradient start style
 * @type {string}
 */
gradientStart: 'rgba(180, 230, 255, 1)',

/**
 * Gradient end style
 * @type {string}
 */
gradientEnd: 'rgba(180, 230, 255, 0)',

/**
 * The vertical padding between the edge of the chart and the most extreme data points.
 * Without some padding, the most extreme points may clip.
 * @type {number}
 */
vPad: 4,

Contributing to this project

  • git clone https://github.com/lukesargeant/ember-sparkline.git
  • cd ember-sparkline
  • npm install

Running

Running Tests

  • npm test (Runs ember try:each to test your addon against multiple Ember versions)
  • ember test
  • ember test --server

Building

  • ember build

For more information on using ember-cli, visit https://ember-cli.com/.