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我創建了一個數據集來說明我擁有的問題。R - 排序半數字列
我的數據是這樣的
id time act
1 1 time1 a
2 1 time2 a
3 1 time3 a
4 1 time101 a
5 1 time103 a
6 1 time1001 b
7 1 time1003 b
9 1 time10000 b
10 1 time100010 c
我想是spread
以正確的順序與time
的數據,這樣的:
id 1 2 3 101 103 1001 1003 1004 10000 100010
1 a a a a a b b b b c
這裏是什麼,我不完全理解。當我spread
我的數據我得到類似
library(dplyr)
library(tidyr)
dt %>% spread(time, act)
id time1 time10000 time100010 time1001 time1003 time1004 time101 time103 time2 time3
1 1 a b c b b b a a a a
所以R
似乎認識到這樣一些數字順序排列的,但認爲time10000
是之前2
或3
。
這是爲什麼?我可以解決這個問題。
我想是這樣的:
id time1 time2 time3 time101 time103 time1001 time1003 time1004 time10000 time100010
1 1 a a a a a b b b b c
數據
dt = structure(list(id = c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L),
time = structure(c(1L, 9L, 10L, 7L, 8L, 4L, 5L, 6L, 2L, 3L
), .Label = c("time1", "time10000", "time100010", "time1001",
"time1003", "time1004", "time101", "time103", "time2", "time3"
), class = "factor"), act = structure(c(1L, 1L, 1L, 1L, 1L,
2L, 2L, 2L, 2L, 3L), .Label = c("a", "b", "c"), class = "factor")), .Names = c("id",
"time", "act"), class = "data.frame", row.names = c(NA, -10L))