Bar Charts are also often used in everyday use for plotting small data sets.

Defaults have not been used in the above example. A legend has been used to illustrate each of the 3 data sets – max, min and avg. A logo has been used to demonstrate that GD::Graph in 2 lines or less, insert a custom graphic. This could be used to 'brand' graphics from your web site.

Data points are also shown at the end of each 'bar' to illustrate better each bar value.

The code to achieve all of this is still quite short .....