try this:
place <- c("place1", "place2", "place3", "place4", "place5")
population <- c(100, 200, 300, 50, 30)
my.df <- data.frame(place, population)
my.df[rep(row.names(my.df), my.df$population), ]
I hope it helps.
Best,
Dimitris
milton ruser wrote:
Dear all,
I have a data.frame like the sample below, and I would
like to expand my data.frame using "population" variable.
So, for each line of my data.frame I would like that
the new data.frame have many rows as the population collumn.
place<-c("place1", "place2", "place3", "place4", "place5")
population<-c(100,200,300,50,30)
my.df<-data.frame(cbind(place,population))
my.df
best wishes,
miltinho astronauta
brazil
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--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus Medical Center
Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
Fax: +31/(0)10/7043014
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
