Dear all:
My web-based application, METRICS, now has a rather complete build out of the google visualization API for public use. Link to the app is below and the google charts tab is on the toolbar at the top.
In this app, you can read in any data file and generate a subset of interactive charts most commonly used by data analysts and you can configure/customize them all using simple drop down menus in the UI.
We will continue some additional work on this, but sharing this with the community.
Hope this is helpful to others
Harold