2007 2011 Ericsson AB, All Rights Reserved The contents of this file are subject to the Erlang Public License, Version 1.1, (the "License"); you may not use this file except in compliance with the License. You should have received a copy of the Erlang Public License along with this software. If not, it can be retrieved online at http://www.erlang.org/. Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. The Initial Developer of the Original Code is Ericsson AB. egd Björn-Egil Dahlberg 2007-11-03 A egd_ug.xml
Introduction

The egd module is an interface for 2d-image rendering and is used by Percept to generate dynamic graphs to its web pages. All code is pure erlang, no drivers needed.

The library is intended for small to medium image sizes with low complexity for optimal performance. The library handles horizontal lines better then vertical lines.

The foremost purpose for this module is to enable users to generate images from erlang code and/or datasets and to send these images to either files or web servers.

File example

Drawing examples:

First save. test1.png Second save. test2.png Third save. test3.png Fourth save. test4.png
ESI example

Using egd with inets ESI to generate images on the fly:

Example of result.

For more information regarding ESI, please see inets application mod_esi.