[R] Empty Data Frame

[Dennis Murphy]

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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>
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