ChartDirector employs a layering architecture. You may combine mulitple layers to
create any combo charts you like. Many sample charts in various pages of this gallery
are combo charts. This page includes a few more examples.
A combo chart consisting of a line layer and an area layer, with two
x-axes and two y-axes.
A combo chart using a line layer combined with a bar layer, with two
independent y-axes.
The y-axes are using the same colors as the data sets, so you know which axis
a data set is associated with.
A combo chart consisting of a 2D area layer, a 2D line layer and a 3D bar layer.