Thank you for your help! But is it possible to produe two vectors x and y with a given length such that there correlation is zero.
For me ist not enough just to simulate two vectors with there correlation. Thank you, Luba -----Urspr?ngliche Nachricht----- Von: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] Im Auftrag von David Freedman Gesendet: Dienstag, 7. Juli 2009 14:53 An: r-help@r-project.org Betreff: Re: [R] Multiplication of data frame with vector Would the scale function work for this? Something like new=scale(df, center=T) HTH, david freedman cir p wrote: > > > Dear group: > sorry for my beginners question, but I'm rather new to R and was searching > high and low without success: > > I have a data frame (df) with variables in the rows and observations in > the columns like (the actual data frame has 15 columns and 1789 rows): > > early1 early2 early3 early4 early5 > M386T1000 57056 55372 58012 55546 57309 > M336T90 11063 10312 10674 10840 11208 > M427T91 12064 11956 12692 12340 11924 > M429T91 4594 3890 4096 4019 4204 > M447T90 26553 27647 26889 26751 26929 > > Now I'm trying to transform each value column-wise to make columns to all > have the same mean with: > > df * mean(mean(df)) / mean(df). > > I just can't get my head around this: mean(df) gives me the correct column > means vector, and mean(mean(df)) gives me the correct total mean. The > above operation works correctly for individual rows, i.e. if I do > df[1,]*mean(mean(df))/mean(df) > > Can someone tell me what I am doing wrong?? > Thanks! > > ______________________________________________ > 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. > > -- View this message in context: http://www.nabble.com/Multiplication-of-data-frame-with-vector-tp24368878p24372764.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
