Commerical graphing packages?

[David Fraser]

Erik Johnson wrote:
>     I am wanting to generate dynamic graphs for our website and would rather
> not invest the time in developing the code to draw these starting from
> graphics primitives. I am looking for something that is... "fairly robust"
> but our needs are relatively modest: X-Y scatter plots w/ data point
> symbols, multiple data set X-Y line plots, bar charts, etc.
> 
>     Preferably this would come from a company that can provide support &
> decent documentation, and a package that can be installed without a bunch of
> extra hassle (e.g., needs Numeric Python, needs to have the GD library
> installed, needs separate JPEG encoders, font libraries, etc.)
> 
>     I am aware of ChartDirector (http://www.advsofteng.com/ ) which
> explicitly supports python and seems to be about the right level of
> sophistication. I don't really know of any other packages in this space, do
> you? I am seeking feedback and reccomendations from people who have used
> this package or similar ones. I am particularly interested to hear about any
> limitations or problems you ran into with whatever package you are using.
> 
> Thanks for taking the time to read my post! :)

It's worth checking out matplotlib as well although it may not meet all 
your criteria ... but have a look, its a great package