README

A PHP Class to build Charts

pChart is a PHP class oriented framework designed to create aliased charts. Most of todays chart libraries have a cost, our project is intended to be free. Data can be retrieved from SQL queries, CSV files, or manually provided. This project is still under development and new features or fix are made every week.

As the primary author of pChart has not updated it since January 19th, 2014, we decided to update the library due to some out-of-date functions.

Installation

The preferred way to install this extension is through composer.

Either run

composer require wp-statistics/pchart

to the require section of your composer.json file.

Usage

Let's add into config in your main-local config file before return[]

<?php
require_once __DIR__ . '/../vendor/autoload.php'; // Autoload files using Composer autoload

use pChart\pData;
use pChart\pChart;
use pChart\pCache;

// Dataset definition
$DataSet = new pData;
$DataSet->AddPoint(array(1, 4, 3, 2, 3, 3, 2, 1, 0, 7, 4, 3, 2, 3, 3, 5, 1, 0, 7));
$DataSet->AddSerie();
$DataSet->SetSerieName("Sample data", "Serie1");

// Initialise the graph
$Test = new pChart(700, 230);
$Test->setFontProperties("Fonts/tahoma.ttf", 10);
$Test->setGraphArea(40, 30, 680, 200);
$Test->drawGraphArea(252, 252, 252, TRUE);
$Test->drawScale($DataSet->GetData(), $DataSet->GetDataDescription(), SCALE_NORMAL, 150, 150, 150, TRUE, 0, 2);
$Test->drawGrid(4, TRUE, 230, 230, 230, 70);

// Draw the line graph
$Test->drawLineGraph($DataSet->GetData(), $DataSet->GetDataDescription());
$Test->drawPlotGraph($DataSet->GetData(), $DataSet->GetDataDescription(), 3, 2, 255, 255, 255);

// Finish the graph
$Test->setFontProperties("Fonts/tahoma.ttf", 8);
$Test->drawLegend(45, 35, $DataSet->GetDataDescription(), 255, 255, 255);
$Test->setFontProperties("Fonts/tahoma.ttf", 10);
$Test->drawTitle(60, 22, "My pretty graph", 50, 50, 50, 585);
$Test->Render("Naked.png");

Screenshots

The pChart charting library is providing many ways to reprensent a single or multiple series of data. We'll try to add screenshots everytime an interesting functionnality is added to the pChart library.