?cumsum > x = c(1,3,2,2,5) > cumsum(x) [1] 1 4 6 8 13 >
On Thu, Apr 21, 2011 at 11:05 AM, Parodi, Pietro <pietro.par...@willis.com> wrote: > > Hello > > I'm trying to do the following vector operation: > > given vector x = c(x1,x2,x3,x4...xn), produce vector y = > c(x1,x1+x2,x1+x2+x3,...x1+...+xn). > > E.g., from x = c(1,3,2,2,5), produce y = c(1,4,6,8,13). > > The underlying problem is finding the cumulative distribution function > given the empirical density distribution function. > > I have done some research on this but the only relevant thing I've found > is the function "integrate", which however gives me the sum of the whole > vector not the step-wise sum. > > Thanks for your help > > Pietro > > > ______________________________________________________________________ > > For information pertaining to Willis' email confidentiality and monitoring > policy, usage restrictions, or for specific company registration and > regulatory status information, please visit > http://www.willis.com/email_trailer.aspx > > We are now able to offer our clients an encrypted email capability for secure > communication purposes. If you wish to take advantage of this service or > learn more about it, please let me know or contact your Client Advocate for > full details. ~W67897 > ______________________________________________________________________ > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Jim Holtman Data Munger Guru What is the problem that you are trying to solve? ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
