On Thu, 2009-08-06 at 08:37 +0000, Inchallah Yarab wrote:
> Good moorning,
>
> yesterday, i asked for how we can import data into R i found that it
> is necessary to make the file in csv format then use L<-
> read.csv2("path of file")
Does read.csv() work instead? How is your "csv" file delimited? columns
separated by ";" or by ","?
> now i see that the dimension of my table importing into R is 1 colonne
> (i have realy 20) and (655555) the number of all my lines in the excel
> file (i want to have only the 2600 lines in my table)
So you failed to import your data correctly.
> Also, when i say to do this L[c(1,2,5)] it is not work coluns not
> define!!!!
That isn't how you select columns from a matrix-like object:
[r,c] is the usual format, you just specified elements 1,2,5. E.g.
> dat <- data.frame(X = 1:10) # 1 column data frame
> dat[c(1,2,5)]
Error in `[.data.frame`(dat, c(1, 2, 5)) : undefined columns selected
Sort out getting your data into R "correctly" first, then you can worry
about subsetting it.
HTH
G
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Dr. Gavin Simpson [t] +44 (0)20 7679 0522
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