Dear all,
If I have a data frame x<-data.frame(x1=c(1,7),x2=c(4,6),x3=c(8,2)):
x1 x2 x3
1 4 8
7 6 2
I want to sort the whole data and get this:
x1 1
x3 2
x2 4
x2 6
x1 7
x3 8
If I do sort(X), R reports:
Error in order(list(x1 = c(1, 7), x2 = c(4, 6), x3 = c(8, 2)), decreasing =
FALSE) :
unimplemented type 'list' in 'orderVector1'
The only way I can sort all the data is by converting it to a matrix:
> sort(as.matrix(x))
[1] 1 2 4 6 7 8
But now I lost all the names attributes.
Is it possible to sort a data frame and keep all the names?
Thanks!
Zhihua Li
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