Historic volatility

[Compradun]

This may not be the perfect place to post this question, but here goes anyway.

is there an EFS that creates a line study of the historical volatility of a stock over a alterable period of time?

I can do this in excel following this

http://www.futuresource.com/industry/hv.asp

I wish I could have it pop up on any chart I am looking at in esig...

This has nothing to do with valuation of options other than volatility can be an input in some models.

[ACM]

Compradun
See the reply to the same message of yours in this thread.
Alex