I would suggest avoiding the function ?assign inside a loop. I used top use
this until someone here kindly pointed out that it was much easier to catch
the data of interest in a list...
eg.
df.list <- vector("list", length(10))
for (i in 1:10)}
df.list[[i]]<-data.frame(arunoff_,table_year,_temp)[c(10,7,9,5,4,12,1,3,2,8,11,6),]
}
HTH
Simon.
----- Original Message -----
From: "Steve Murray" <smurray...@hotmail.com>
To: <r-help@r-project.org>
Sent: Wednesday, March 25, 2009 5:58 PM
Subject: [R] Manual sort in a for loop
Dear all,
I am trying to manually re-sort rows in a number of tables. The rows
aren't sorted on any particular values but are simply ordered by user
choice (as shown by the row numbers in the code). I have been able to
carry out each re-arrangement without the use of the 'for' loop, but
cannot seem to successfully execute the statements when incorporated into
the loop. The code I have is as follows:
table_year=1951
for (i in (paste("arunoff_",year,"_temp",sep=""))) {
assign(paste("arunoff_",table_year,
sep=""),paste("arunoff_",table_year,"_temp")[c(10,7,9,5,4,12,1,3,2,8,11,6),])
table_year = table_year+1
}
The error I get is:
Error in paste("arunoff_", table_year, "_temp")[c(10, 7, 9, 5, 4, 12, :
incorrect number of dimensions
...depsite this not occurring when I do each table individually (so it
can't be a case of there not being enough rows, as> dim(arunoff_1951_temp)
gives [1] 12 11
I have a feeling that it may be a syntax error, possibly between 'temp'
and the square bracket, but I can't be sure of this.
Any solutions or advice offered would be gratefully received.
Many thanks,
Steve
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