Re: [R] Expand dataframe according to limits defined per row

Here's one way to do it with the plyr package: library('plyr') f <- function(df) with(df, data.frame(B = B, E = seq(C, D))) ddply(d, 'A', f) A corresponding solution with the data.table package would be library('data.table') dt <- data.table(d, key = 'A') dt[, list(B, E = seq(C, D)), by = 'A']

Re: [R] Expand dataframe according to limits defined per row

011 7:03 AM > To: r-help@r-project.org > Subject: [R] Expand dataframe according to limits defined per row > > Hi all, > > Would appreciate help with transforming this: > > A B C D > a 2 1 4 > b 3 3 5 > > into this: > > A B E > a 2 1 > a 2 2 > a 2 3 &

Re: [R] Expand dataframe according to limits defined per row

On 07.10.2011 16:02, darkgaze wrote: Hi all, Would appreciate help with transforming this: A B C D a 2 1 4 b 3 3 5 into this: A B E a 2 1 a 2 2 a 2 3 a 2 4 b 3 3 b 3 4 b 3 5 (C<=E<=D) do.call(rbind, apply(dat, 1, function(x) data.frame(A=x[1], B=x[2], E=seq(x[3], x[4] Uwe Ligges

[R] Expand dataframe according to limits defined per row

Hi all, Would appreciate help with transforming this: A B C D a 2 1 4 b 3 3 5 into this: A B E a 2 1 a 2 2 a 2 3 a 2 4 b 3 3 b 3 4 b 3 5 (C<=E<=D) Best, Don -- View this message in context: http://r.789695.n4.nabble.com/Expand-dataframe-according-to-limits-defined-per-row-tp3882319p3882319.