Cumulative density (kernel smoothing)

Hi, in R there is the function "density" which computes kernel density
estimates. Is there a "cumulative" version of it? Something like  
they have
in Matlab:

I'm not aware of one, but you could use `integrate`. You will need to  
limit your range or use the version in package  logspline if your  
range is fixed. You will also need to account for the fact that the  
inteegral will only be approximately == 1. Searching the Archives will  
bring up several similar questions from prior years.\

http://www.mathworks.nl/help/toolbox/stats/ksdensity.html
I know there is ecdf, but I'm not sure it's based on kernel density
smoothing. Thanks

`ecdf` is not based on density.

David Winsemius, MD
West Hartford, CT