[R] First and second derivatives of raw observations

[Duncan Murdoch]

On 30/08/2010 6:40 PM, mtorabi at math.carleton.ca wrote:
> Dear all,
> 
> I was asked to send the following question:
> 
> We have some (raw) observations and would like to get the first and second
> derivatives in R. Any comment would be appreciated.

Fit a model, and take derivatives of the fit.  Which model?  Depends on 
the context.

Duncan Murdoch