r - Sort data by row -

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i have data frame like

id  b c d e f   1 2 9 4 7 6 b   4 5 1 3 6 10 c   1 6 0 3 4 5

i want data frame 

id  c e f d b     #for a, c has highest value, e f , on...similarly other rows b  f e b d c c  b f e d c

basically, sorting each row of data frame first , replacing row values respective column names.

is there nice way this?

use order apply, extracting names in process, this:

data.frame(   mydf[1],    t(apply(mydf[-1], 1, function(x)      names(x)[order(x, decreasing = true)]))) #   id x1 x2 x3 x4 x5 x6 # 1   c  e  f  d  b  # 2  b  f  e  b   d  c # 3  c  b  f  e  d   c

the result of apply needs transposed before recombined id column.


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