Easy Maintenance CSS/Flash graph

[Travoli]

I want to place a dynamic line graph on a webpage.  Low maintenance is key.  I'd love to be able to upload a new .txt or .xls and have the chart update from the data file.  With some quick research, I found a couple ideas (below).  But, there must be a better solution.  Anyone have any recommendations?

1st resource:  Graphs with CSS / PHP  http://www.terrill.ca/design/vertical_bar_graphs/
2nd resource: Open flash chart   http://teethgrinder.co.uk/open-flash-chart/

[Gurtie]

is this any good? http://code.google.com/p/flot/ it delivers pretty graphs to me in a couple of tools which run from a database, so it doesn't sound a million miles away if you add an upload and an auto refresh

[Travoli]

both of those look great, thanks!

[ergophobe]

Google Charts has an API. I haven't played with the API, but I have made some charts with static data and it's pretty damn easy. I wouldn't think going dynamic would be that hard.

http://code.google.com/apis/chart/

It's not Flash though.