This class is meant to generate bar graphs defined either programatically calling the class functions or using definition file to specify the graph characteristics.
The graph definitions file structure is very simple and so it is probably a better way to create graphics on the fly.
It supports axis background or border color, title text and color, graph background color, bars background and border colors, padding distances, etc.. Transparent background and transparency levels for the entire image are also supported.
The bar graph images are generated in true color in PNG format.