Henrique, thank you! On Tue, Sep 22, 2009 at 16:32, Henrique Dallazuanna <www...@gmail.com> wrote: > Try this; > > set.seed(123) > x <- rnorm(100) > sapply(30:length(x), function(i)mean(x[1:i])) > > On Tue, Sep 22, 2009 at 11:12 AM, Sergey Goriatchev <serg...@gmail.com> wrote: >> Hello, everyone >> >> I wonder if there is in R somewhere a function similar to cumsum(). >> The function calculates a statistic (say mean or standard deviation) >> buy adding consequtively one more data point. >> >> So, say I have a timeseries of 100 observations. >> I start by calculating mean of first 30 observations >> Then I add one observation and calculate mean of 31 observations >> Then I add one more observation and calculate mean of 32 observation, >> and so on until the end >> >> Is there a function like that in R? >> >> Best, >> Sergey >> >> -- >> Kniven skärpes bara mot stenen. >> >> ______________________________________________ >> 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. >> > > > > -- > Henrique Dallazuanna > Curitiba-Paraná-Brasil > 25° 25' 40" S 49° 16' 22" O >
-- I'm not young enough to know everything. /Oscar Wilde Experience is one thing you can't get for nothing. /Oscar Wilde When you are finished changing, you're finished. /Benjamin Franklin Tell me and I forget, teach me and I remember, involve me and I learn. /Benjamin Franklin Luck is where preparation meets opportunity. /George Patten Kniven skärpes bara mot stenen. ______________________________________________ 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.
