[R] replicating dataframe rows

[Dimitris Rizopoulos]

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
> 
> 	[[alternative HTML version deleted]]
> 
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-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus Medical Center

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