I have a following data frame
a = data.frame(a=c(1,2,3,4,5,6,7),b=c(1,2,3,10,12,21,4),c=c(1,2,10,11,"X","Y",3))
> a
a b c
1 1 1 1
2 2 2 2
3 3 3 10
4 4 10 11
5 5 12 X
6 6 21 Y
7 7 4 3
I want to sort whole data frame in lexicographical order, so that the output (for example, column "c") should be like
> a[,"c"]
[1] 1 2 3 10 11 X Y
I tried and I am geting different answer
indata <- a[do.call(order,a[,c("c","a","b")]),]
> indata[,"c"]
[1] 1 10 11 2 3 X Y
Levels: 1 10 11 2 3 X Y
I tried gtools, mixedorder package and worked fine on one column:
> a[mixedorder(a$c),]
a b c
1 1 1 1
2 2 2 2
3 3 3 10
4 4 10 11
5 5 12 X
6 6 21 Y
7 7 4 3
but it doesn't work if I include multiple columns:
> a[with(a,order(mixedorder(c),mixedorder(b),mixedorder(a))),]
a b c
1 1 1 1
2 2 2 2
4 4 10 11
5 5 12 X
6 6 21 Y
7 7 4 3
3 3 3 10
though I am expecting :
a b c
1 1 1 1
2 2 2 2
4 7 4 3
5 3 3 10
6 4 10 11
7 5 12 X
3 6 21 Y
One option is to use mixedorder() from the gtools package.
library(gtools)
a[mixedorder(a$c),]
# a b c
# 1 1 1 1
# 2 2 2 2
# 7 7 4 3
# 3 3 3 10
# 4 4 10 11
# 5 5 12 X
# 6 6 21 Y