Image_Graph provides a set of classes that creates graphs/plots/charts based on (numerical) data.

Many different plot types are supported: Bar, line, area, step, impulse, scatter, radar, pie, map, candlestick, band, box & whisker and smoothed line, area and radar plots.

The graph is highly customizable, making it possible to get the exact look and feel that is required.

The output is controlled by Image_Canvas, which facilitates easy output to many different output formats, amongst others, GD (PNG, JPEG, GIF, WBMP), PDF (using PDFLib) and Scalable Vector Graphics (SVG).

Image_Graph is compatible with both PHP4 and PHP5 and can be used with both GD1 and GD2 (GD2 is recommended)

PEAR::Image_Graph

Getting Started Guide

• Introduction
• Installing
• Creating The Building Blocks
• Building The Graph
  • Creating The Graph
  • The Plotarea
  • Adding a Plot
  • Entering Data
  • Output
• Configuring Appearance
• Setting Up The Layout
• A More Comprehensive Example

API Documentation (latest version)

FAQ - Frequently Asked Questions

Reports with PEAR::Image_Graph by Stefan Neufeind, talk at “International PHP Conference”, Amsterdam, Netherlands (2005-05-04)

An Introduction to Graphs Using PEAR's Image_Graph Package by Ian Gilfillan at PHPBuilder.com

More about PEAR's Image_Graph Part 2 of Ian Gilfillan article at PHPBuilder.com

Tips & Trick how to get Image_Graph to work with TTF Fonts on Linux

Below you will (eventually) find a description of the individual components of Image_Graph

• Graph
• Plotarea
• Layout
• Plot
• Axis
  • Labels
  • Direction
  • Intersection
  • Appearance
  • Types
  • Markers
  • Grids
• Data Preprocessor
• Data Selector
• Fill
• Using Canvas
• Horizontal Plots

• Radar Plot
• Box & Whisker Chart
• Candlestick Diagram
• Band Chart
• Pie Chart
• Odo Chart

Here you can find a compiled list of known issues with links to relevant information (fx. forum links)

Known Issues