On Fri, 26 Sep 2008, David Scott wrote:
On Thu, 25 Sep 2008, Julian Burgos wrote:
How about something like
my.data=my.data[,4:1]
Julian
This can be tackled in a similar way to the question by Mark Na which I just
answered. Using the same data frame construction we have
df <- data.frame(k1=1:2,k2=3:4,z=5:6,a=7:8,y=9:10)
df
k1 k2 z a y
1 1 3 5 7 9
2 2 4 6 8 10
revdf <- df[,rev(names(df))]
revdf
y a z k2 k1
1 9 7 5 3 1
2 10 8 6 4 2
Oh dear, read the question again! Reverse the order of the *rows*:
df <- data.frame(a=1:5,b=6:10)
df
a b
1 1 6
2 2 7
3 3 8
4 4 9
5 5 10
revdf <- df[rev(rownames(df)),]
revdf
a b
5 5 10
4 4 9
3 3 8
2 2 7
1 1 6
David Scott
milicic.marko wrote:
Hi,
I have the data.frame with 4 columns. I simply want to invert dataset
so that last row becomes first...
I tried with rev(my_data-frame) but I got my columns inverted... not
my rows
Thanks
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______________________________________________
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PLEASE do read the posting guide
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_________________________________________________________________
David Scott Department of Statistics, Tamaki Campus
The University of Auckland, PB 92019
Auckland 1142, NEW ZEALAND
Phone: +64 9 373 7599 ext 86830 Fax: +64 9 373 7000
Email: [EMAIL PROTECTED]
Graduate Officer, Department of Statistics
Director of Consulting, Department of Statistics
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
_________________________________________________________________
David Scott Department of Statistics, Tamaki Campus
The University of Auckland, PB 92019
Auckland 1142, NEW ZEALAND
Phone: +64 9 373 7599 ext 86830 Fax: +64 9 373 7000
Email: [EMAIL PROTECTED]
Graduate Officer, Department of Statistics
Director of Consulting, Department of Statistics
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
