seigler/neat-charts

PHP project to generate clean-looking SVG price charts

30 days of Dash price in Bitcoin from Poloniex.com

Ethereum 7-day price in BTC from Poloniex

More examples at cryptohistory.org.

Requirements

• PHP >=5.3.0

Installation

Using Composer

To install using Composer, you will have to install Composer first.

curl -s https://getcomposer.org/installer | php

Create a composer.json file in your project root. Then run this command in your project folder:

composer require seigler/neat-charts

Tell Composer to install the required dependencies.

php composer.phar install

If you want to use the autoloading provided by Composer, add the following line to your application file.

require 'vendor/autoload.php';

You are now ready to use NeatCharts.

Install NeatCharts manually

Download the folder NeatCharts (in src) and place it alongside your php file. Add the following at the top of your PHP file:

spl_autoload_extensions(".php");
spl_autoload_register();

This will automatically require the correct files when they are referenced, since the namespace and class names match the folder structure.

Usage

Header('Content-type: image/svg+xml; charset=utf-8');

$chart = new NeatCharts/LineChart($chartData, [ // all parameters optional
  'width'=>800,
  'height'=>250,
  'lineColor'=>"#1C75BC",
  'labelColor'=>"#777",
  'smoothed'=>false
]);
print '<?xml version="1.0" standalone="no"?>';
print $chart->render();

In your HTML: <img src="path to the PHP file">

There are more demos available in demo.php and demo-as-image.php.

Available Options

LineChart

Option	Default
width	800
height	250
lineColor	'#000'
markerColor	'#000'
labelColor	'#000'
smoothed	false
fontSize	15
yAxisEnabled	true
xAxisEnabled	false
yAxisZero	false
filled	false

BarChart

Option	Default
width	600
height	300
barColor	'#000'
markerColor	'#000'
labelColor	'#000'
fontSize	15
yAxisEnabled	true
xAxisEnabled	false
yAxisZero	true

CandlestickChart

Option	Default
width	1200
height	300
barColor	'#000'
risingFillColor	'#0D0'
fallingFillColor	'#D00'
markerColor	'#000'
labelColor	'#000'
fontSize	15
yAxisEnabled	true
xAxisEnabled	false
yAxisZero	false

Credits

• Chart appearance based on advice found at http://vis4.net/blog/posts/doing-the-line-charts-right/