Hi > Dear all I am having a vector with large length and I would like to ask > you if I can aggregate the values by constant sized windows. For example
> for the following vector, I would like to take 30 points until the end > and find their mean. > > > > myData<-seq(1:100000) > > > > c(mean(myData[1:30]),mean(myData[31:60])) #...and so one until the end > [1] 15.5 45.5 > > I have searched in the R documentation and I found the aggregate but it > seems to operate on data.frames. It also has this by argument where I Why do you think so? Aggregate works on any suitable object, e.g. vector. > tried to set it to 30 but it expects there a list rather than a numeric value. >From help page by a list of grouping elements, each as long as the variables in x. the only thing what aggregate wants is list(some.vector.with.the.same.length.as.variable.you.want.to.aggregate) as some categorical data according to what you want to perform the function operation. Regards Petr > > Could you please help me ? > I would like to thank you in advance for your help > > B.R > Alex > > [[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. ______________________________________________ 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.
