[R] Change point in CDF

[David Winsemius]

On Aug 25, 2011, at 9:33 PM, Jim Silverton wrote:

> Hi all,
> I have some data. I want to fit a smooth cdf to the data. Then I  
> want to
> find both the value of x  and the % on the y axis for which the the  
> slope is
> 1 ( or the point where the slope change is the greatest...hummh well  
> the
> part where you can identify where there is a point of  
> inflection...for want
> of a better word. Any ideas?

Maybe you should describe what you are trying to do rather than  
displaying what you have forgotten about calculus.

-- 

David Winsemius, MD
West Hartford, CT