D3 Funnel Graph

Funnel Graph JS is a library for generating funnel charts using SVG, utilizing D3 JS
It supports horizontal and vertical funnel charts, offers options for solid colors and gradients, and can generate two-dimensional funnel charts.

This project is a fork of the funnel-graph-js project initiated by greghub. It has been entirely refactored using D3.js, although the core code that creates the paths remains unchanged.
The funnel graph is created as a single SVG unit, without combining any HTML elements except for the tooltip. This approach ensures a single responsive graph that can be dynamically updated and resized without needing to recreate the graph.

New features have been added:

• No need to recreate the graph on update
• Responsive graph including the text informations and dividers
• Text information can be displayed or hidden
• Tooltip over each area path
• Clickable areas with configurable callbacks

Support for Vue, React, and Other Frameworks

There's no need to use the specific Vue project: vue-funnel-graph-js
This project supports dynamic data and configuration updates and is very simple to integrate with any front-end JavaScript framework, including Vue, React, and others.

Vue2 Example: https://codepen.io/arik-test/pen/qBGYjyG

Build

> yarn
> yarn build 

Installation

npm i d3-funnel-graph

JS:

import FunnelGraph from 'd3-funnel-graph';
// or import "d3-funnel-graph/dist/css/funnel-graph.min.css"

SCSS:

@import "d3-funnel-graph/dist/scss/variables.scss"
@import "d3-funnel-graph/dist/scss/d3.scss"

Usage

var graph = new FunnelGraph({
    container: '.funnel',
    gradientDirection: 'horizontal',
    data: {...},
    displayPercent: true,
    direction: 'horizontal',
    width: 800,
    height: 300,
    callbacks: {
        click: (event, metadata) => {
            console.log(metadata);
        }
    },
    margin: { top: 120, right: 60, bottom: 60, left: 60, text: 10 }
});

graph.draw();
// use graph.destroy() for cleanup

FunnelGraph Class Configuration

• container selector name (e.g. ".selector")

• width of the chart in pixels (e.g. 600)

• height of the chart in pixels(e.g. 400)

• labels to be displayed on each section (e.g ['Impressions', ...])

• subLabels to used in the tooltip for two dimentions chart (e.g. ['Direct', ...])

• colors overrides the defaults [ ['#000', ... ], ]

• values of the graph (e.g. [ [3500, ...], ])

• margin for the info text (e.g { ?top, ?right, ?bottom, ?left, text })

• gradientDirection ('vertical' | 'horizontal')

• callbacks object for handling user actions (e.g. { 'click': () => {} })

  • click callback function for click events
    • Signature: ({ index, value, label, subLabel, sectionIndex }) => {}
      • Parameters:
        • index: The index of the path item that was clicked.
        • sectionIndex: The index of the section that contains the clicked path item.
        • value: The value associated with the clicked item.
        • label: The label of the clicked item.
        • subLabel: The sub-label of the clicked item (if applicable).
  • tooltip callback function for tooltip event - overrides the OOTB implementation
    • Signature: (event, { label, value }) => {}

• displayPercent should be displayed [true | false],

• details should be displayed [ true | false ]

• tooltip should be displayed [ true | false ]
  Note: The tooltip display depends on the details display so it can calculate its range according to the dividers.

• responsive when true the SVG's width and height will be set to 100%. And the configured width and height will be set in the viewBox. Make sure to set the parent DIVs elements to be 100% as well for resized graph

Updatable FunnelGraph configuration

• width
• height
• margin
• values
• labels
• subLabels
• colors
• details
• tooltip

Other Download and Import Options

Go to the code section of the repository and download the ZIP file.
Then, Use the provided resources according to your environment. You can use them directly in plain HTML or by importing (ES6+) them into your project.

CDN:

<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/gh/lastboy/funnel-graph-js@master/dist/css/funnel-graph.min.css">

<script src="https://cdn.jsdelivr.net/gh/lastboy/funnel-graph-js@master/dist/js/funnel-graph.min.js"></script>

CSS:

<link rel="stylesheet" type="text/css" href="../dist/css/funnel-graph.min.css">

JS:

<script src="../dist/js/funnel-graph.min.js"></script>

Responsive Graph

• In order to have a responsive graph the wrapper DIVs should have width/height of 100%
• The "responsive" flag should be set to true (the SVG width/height will be set to 100%/100%)
• The graph width/height should be at a ratio that fits your page - that will set the viewBox. (e.g. 800/200 100/100 etc...)