2007 2016 Ericsson AB, All Rights Reserved Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions 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.