?split.
Hadley
On Wed, Oct 29, 2008 at 3:22 PM, t c <[EMAIL PROTECTED]> wrote:
> I need some help with sub-setting my data. I am trying to divide a data
> frame into multiple data frames based on the year collected, and stored in a
> list with each new data frame labeled with "year X" where X is the year the
> data was collected. When I run my current code I get nine error messages
> stating
> "In one_year[name] <- myear : number of items to replace is not a multiple
> of replacement length"What I have so far is:
> Below is my code, the data frame mydat, and what I would like the final
> product to look like. I would appreciate any help or suggestions on what I
> am doing wrong.
> Thanks,
> Tim
>
>
> one_year<-list()
> for (i in min(mydat$Year):max(mydat$Year)) #Loops from first to last year in
> dataset
> {
> myear<-mydat[mydat$Year==i,]
> name<-paste("Year",i)
> one_year[name]<-myear
> }
>
>
> mydat:
> Year Month Day number other Ind1 Ind2 Ind3 Ind4
> 1985 8 13 1 1 0 0 0 0
> 1986 8 5 2 3 0 0 0 0
> 1991 4 24 3 0 0 0 0 0
> 1991 4 25 4 0 0 0 0 0
> 1991 8 2 5 0 0 0 0 0
> 1991 8 6 6 0 0 0 0 0
> 1991 9 4 7 2 0 0 0 0
> 1991 9 9 8 4 0 0 0 0
> 1991 12 16 9 0 0 0 0 0
> 1992 3 18 10 1 0 0 0 0
> 1992 5 13 11 0 0 0 0 0
> 1992 7 31 12 1 0 0 0 0
> 1992 8 19 13 0 0 0 0 0
> 1992 10 14 14 2 0 0 0 0
> 1992 10 30 15 4 0 0 0 0
> 1992 11 11 16 2 0 0 0 0
> 1992 11 20 17 0 0 0 0 0
> 1992 12 5 18 0 0 0 0 0
> 1992 12 9 19 3 0 0 0 0
> 1993 1 24 20 5 0 0 0 0
>
>
> What I would like is:
> Year1985
> 1985 8 13 1 1 0 0 0 0
>
> Year 1986
> 1986 8 5 2 3 0 0 0 0
>
> Year 1991
> 1991 4 24 3 0 0 0 0 0
> 1991 4 25 4 0 0 0 0 0
> 1991 8 2 5 0 0 0 0 0
> 1991 8 6 6 0 0 0 0 0
> 1991 9 4 7 2 0 0 0 0
> 1991 9 9 8 4 0 0 0 0
> 1991 12 16 9 0 0 0 0 0
> ect.
>
>
>
>
>
> [[alternative HTML version deleted]]
>
>
> ______________________________________________
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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.
>
>
--
http://had.co.nz/
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