CDF usually requires a closed form when you know or expect distribution. ECDF, on the other hand, is βempiricalβ because it comes from your data. I just answered the question about using ecdf() and Hmisc ecdf() here the other day .
More generally, you can search here using terms such as
[r] ecdf
in the search box to search for 'ecdf' in the R tag. In rseek.org, little is suitable for 'ccdf'. Perhaps this is the same thing as minus ECDF? If so, ecdf() in Hmisc can do this.
I hope this helps, if not please, rephrase your question, since it is not entirely clear what exactly you are looking for. Both ecdf() and ecdf() quite functional, so be sure to read their help pages.
source share