Bar Graph: Dynamically created bar graph

This class creates a PNG image bar graph for inclusion in HTML pages.

The graph can display one or more data sets in user defined colors. The font size, font color background color, spacing between sets of bars, labels, and y-axis tick marks are all set by the user.

To use the class you first need to collect some information, such as the data, labels and the image dimensions. While the thickness and height of the bars will adjust to fit your image, the text will not.

After creating the image you can set many of the features.