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Empty Data Frame
3 messages · Santosh Srinivas, Dennis Murphy, Hadley Wickham
Hi: You could try something like df <- data.frame( expand.grid( Week = 1:52, Year = 2002:2011 )) dim(df) head(df) The first variable changes faster than the second. HTH, Dennis On Wed, Apr 27, 2011 at 1:03 AM, Santosh Srinivas
<santosh.srinivas at gmail.com> wrote:
Dear Group,
Is there a more efficient way to create a data frame structure (using rep I
guess?)
require(plyr)
week <- rdply(10, data.frame(week = 1:52))
names(week) <- c("Year", "Week")
week$Year <- week$Year + 2000
Basically trying to create a year and week data frame to start appending
data to for a ggplot.
Many thanks.
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On Wed, Apr 27, 2011 at 4:58 AM, Dennis Murphy <djmuser at gmail.com> wrote:
Hi: You could try something like df <- data.frame( expand.grid( Week = 1:52, Year = 2002:2011 ))
expand.grid already returns a data frame... You might want KEEP.OUT.ATTRS = F though. Even it feels like you are yelling at R. Hadley
Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/