bbvox / lines-svg

Lines svg charts, candlestick, sma, ema and ...

Lines SVG chart Library

About the project

LinesSvg is a financial chart library based on snapsvg. You can use it to create HTML5 forex/stock charts. The library support standart time based graphics(linear, sma, ema ...), toolset for end users to draw(hints, notes, signals) and create snapshots in PNG or Canvas format.

Supported charts:

1. Linear
2. Japan candlestick
3. Simple Moving Average(SMA)
4. Exponential Moving Average(EMA)

Drawing feature:

1. Rectangle
2. Circle
3. Line
4. Text
5. Pointer

Installation

1. Npm npm install lines-svg

2. From repo

$ git clone
$ cd project_folder
$ npm install
$ npm run build

Demo and initialize snippet

linesSVG charts Demo

const chartData = [
  [1.1, 1.1, 1.3, 1.2, 1588368812844]
  ...
]; // ohlc Data with timestamp
const l = new Lines(elementID);
l.data(chartData);
l.draw();

Running Tests

Install development dependencies:

$ npm install

Then:

$ npm run test

DESCRIPTION

Interface and functions signature are :

1. Constructor Lines("elementID"), expect argument to be existing DOM svg element with elementID.
2. Instance.data(dataSet) method expect dataSet to be Array with particular structure ['open', 'high', 'low', 'close', 'timestamp'].
3. Instance.draw(type) method, expect/support: all, line, candle, sma, ema type of charts. Default value is all.
4. Library support also end user draw of lines, arrows, tunels.

todo

1. Transfer library to typescript & use the option to modulize it. Export some of the properties to different file.

npm run build:watch
npm start
IP : 5000 / example/build.html

• https://github.com/andyhaskell/webpack-mocha-tutorial
• https://github.com/vyasriday/webpack-js-library

https://medium.com/@binyamin/creating-a-node-express-webpack-app-with-dev-and-prod-builds-a4962ce51334

lines-svg's Issues

Library method next

Did not reset old charts on passing new data to library.