[英]How to rank a variable in a column based on a conditional, when there are NAs in the column
我有一個包含兩個人的縱向數據集,其中數據行編號為“劇集”,有些劇集有一個測試“結果”。 以下代碼的目標是:
目前,我嘗試通過事件和事件決賽分兩步完成#3。 問題:它不起作用,因為“sup_rank”不起作用,但無論如何,將“event”創建為一個變量(而不需要“event_final”)是理想的。
#Load packages
pacman::p_load(dplyr)
#Create variables for data set
person <- c(1, 1, 2, 2, 2, 2, 2, 2, 2, 2)
episode <- c(1, 2, 1, 2, 3, 4, 5, 6, 7, 8)
result <- c(NA, NA, NA, 1, NA, 2, NA, 2, NA, 2)
#Populate data frame with variables
d <- cbind(person, episode, result)
d <- as.data.frame(d)
#Manipulate data frame to create 4 new variables
d1 <- d %>%
#Need to create new variables within each person
group_by(person) %>%
#Need to correctly order the rows of data before creating the variables
arrange(person, episode) %>%
#Create variable to evaluate 'result'
mutate(sup = if_else(result == 2, 1, 0, NA_real_)) %>%
#if sup == 1, rank it
mutate(sup_rank = ifelse(sup == 1, rank(sup == 1, na.last = 'keep', ties.method = 'first'), NA_real_)) %>%
#create an event if the rank of the sup == 1 is equal to 1 (we want the initial suppression)
mutate(event = if_else(sup_rank == 1, 1, 0, NA_real_)) %>%
#now override the value of event to be equal to 0 if sup==0
mutate(event_final = if_else(sup == 0, 0, event)) %>%
arrange(person, episode)
print(d1)
#> # A tibble: 10 x 7
#> # Groups: person [2]
#> person episode result sup sup_rank event event_final
#> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
#> 1 1 1 NA NA NA NA NA
#> 2 1 2 NA NA NA NA NA
#> 3 2 1 NA NA NA NA NA
#> 4 2 2 1 0 NA NA 0
#> 5 2 3 NA NA NA NA NA
#> 6 2 4 2 1 2 0 0
#> 7 2 5 NA NA NA NA NA
#> 8 2 6 2 1 3 0 0
#> 9 2 7 NA NA NA NA NA
#> 10 2 8 2 1 4 0 0
由reprex package (v2.0.0) 創建於 2022-04-20
確實有一種更有效的方法可以做到這一點,但與此同時,這是我創建的一個解決方案:
#Load packages
pacman::p_load(dplyr)
#Create variables for data set
person <- c(1, 1, 2, 2, 2, 2, 2, 2, 2, 2)
episode <- c(1, 2, 1, 2, 3, 4, 5, 6, 7, 8)
result <- c(NA, NA, NA, 1, NA, 2, NA, 2, NA, 2)
#Populate data frame with variables
d <- cbind(person, episode, result)
d <- as.data.frame(d)
#Manipulate data frame to create 5 new variables
d1 <- d %>%
#Need to create new variables within each person
group_by(person) %>%
#Need to correctly order the rows of data before creating the variables
arrange(person, episode) %>%
#Create variable to evaluate 'result'
mutate(sup = if_else(result == 2, 1, 0, NA_real_)) %>%
#Create a flag for each time sup==1
mutate(sup_flag = if_else(sup == 1, 1, NA_real_, NA_real_)) %>%
#if sup == 1, rank it
mutate(sup_rank = ifelse(sup == 1, rank(sup_flag, na.last = 'keep', ties.method = 'first'), NA_real_)) %>%
#create an event if the rank of the sup == 1 is equal to 1 (we want the initial suppression)
mutate(event = if_else(sup_rank == 1, 1, 0, NA_real_)) %>%
#now override the value of event to be equal to 0 if sup==0
mutate(event_final = if_else(sup == 0, 0, event)) %>%
arrange(person, episode)
print(d1)
#> # A tibble: 10 x 8
#> # Groups: person [2]
#> person episode result sup sup_flag sup_rank event event_final
#> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
#> 1 1 1 NA NA NA NA NA NA
#> 2 1 2 NA NA NA NA NA NA
#> 3 2 1 NA NA NA NA NA NA
#> 4 2 2 1 0 NA NA NA 0
#> 5 2 3 NA NA NA NA NA NA
#> 6 2 4 2 1 1 1 1 1
#> 7 2 5 NA NA NA NA NA NA
#> 8 2 6 2 1 1 2 0 0
#> 9 2 7 NA NA NA NA NA NA
#> 10 2 8 2 1 1 3 0 0
由reprex package (v2.0.0) 創建於 2022-04-22
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