Hello,

First, please take a look at the following screen shot:

http://farm2.static.flickr.com/1226/1185331048_5d0b41e7f8_o.png

We are working on a web-based project management system for our
client.  They would like to have the system generate such a project
roadmap on the fly, by grabbing the data from the database.

I would say that this is gonna be pretty hard to implement.

The durations of each project are retrieved from the database.
Project A, B and C are related, and this is visually represented by
having them span two adjacent rows.  But, let's forget about the
grouping of these 3 projects.  Is there any charting application that
can handle this task?

I know a few charting applications can do Gantt chart pretty.  But, I
haven't found anything that can do such roadmaps.

Any hint is highly appreciated.