ID score
a 1
a 2
b 2
b 4
c 4
c 5
I want to change id to "a,b,c" order this to
ID score
a 1
b 2
c 4
a 2
b 4
c 5
What I tried
> data <- read_csv(data)
> data <- factor(data$id, levels = c('a', 'b', 'c'))
This works for tables so I tried it but didn't work for this. Anybody know if there is a way?
Instead of assigning the 'id' column to data <-
(which would replace the data with the 'id' values) it would be used for order
ing. In base R
, this can be done with
data1 <- data[order(duplicated(data$ID)),]
row.name(data1) <- NULL
Or with dplyr
library(dplyr)
library(data.table)
data %>%
arrange(rowid(ID))
library(dplyr)
d %>%
group_by(ID) %>%
mutate(r = row_number()) %>%
ungroup() %>%
arrange(r, ID, score) %>%
select(-r)
OR in base R
with(d, d[order(ave(seq(NROW(d)), d$ID, FUN = seq_along), ID, score),])
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