[R] Sorting data frame by prepared order

jeff6868 geoffrey_klein at etu.u-bourgogne.fr
Mon Mar 2 13:02:53 CET 2015


Hi,

Maybe a beginning of solution with this?

test <-
data.frame(x=c(1,1,1,1,1,1,2,2,2,2,2,2),y=c("a","a","a","b","b","b","a","a","b","b","b","a"))
test[order(test$x),]

out <- split(test,test$x)

for (i in 1:length(out)) {
    foo <- unique(out[[i]][,2])
       out[[i]][,2] <- rep(foo,(nrow(out[[i]])/(length(foo)))) }

Seems to work for an length with a even value of your unique values in your
first column. But still a problem for odd lengths. Maybe solved by adding
fake rows that you can remove afterwords (with a specific index for
example).



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