合并R中不同大小和条件的数据帧
合并R中不同大小和条件的数据帧
提问于 2020-05-10 03:47:40
我正在尝试将2个csv文件合并到一个文件中。它们具有不同大小的共同id。我使用merge()，但我得到了复制的数据。我有以下数据帧；
SR <- c("SR1", "SR2", "SR2", "SR2", "SR3", "SR4", "SR4")
school <- c("S-1", "S-1", "S-2", "S-4", "S-2", "S-1", "S-5")
Y <- c(3,4,1,2,5,2,3)
data1 <- data.frame(SR.id, school, Y)
SR <- c("SR1", "SR1", "SR1", "SR2", "SR2", "SR2", "SR2", "SR2", "SR2", "SR2", "SR3", "SR3", "SR4", "SR4", "SR4")
class <- c("S-1.02", "S-1.05", "S-1.07", "S-1.01", "S-1.02", "S-1.03", "S-1.06", "S-2.03", "S-2.15", "S-4.02", "S-2.01", "S-2.03", "S-1.05", "S-1.06", "S-5.01")
data2 <- data.frame(SR, class)data1
SR school Y
SR1 S-1 3
SR2 S-1 4
SR2 S-2 1
SR2 S-4 2
SR3 S-2 5
SR4 S-1 2
SR4 S-5 3
data2
SR class
SR1 S-1.02
SR1 S-1.05
SR1 S-1.07
SR2 S-1.01
SR2 S-1.02
SR2 S-1.03
SR2 S-1.06
SR2 S-2.03
SR2 S-2.15
SR2 S-4.02
SR3 S-2.01
SR3 S-2.03
SR4 S-1.05
SR4 C-1.06
SR4 C-5.01学校是结果的地方应该是
SR school class Y
SR1 S-1 S-1.02 3
SR1 S-1 S-1.05 3
SR1 S-1 S-1.07 3
SR2 S-1 S-1.01 4
SR2 S-1 S-1.02 4
SR2 S-1 S-1.03 4
SR2 S-1 S-1.06 4
SR2 S-2 S-2.03 1
SR2 S-2 S-2.15 1
SR2 S-4 S-4.02 2
SR3 S-2 S-2.01 5
SR3 S-2 S-2.03 5
SR4 S-1 S-1.05 2
SR4 S-1 S-1.06 2
SR4 S-5 S-5.01 3谢谢你的帮助。
回答 2
Stack Overflow用户
回答已采纳
发布于 2020-05-10 05:05:59
一个选项是来自fuzzyjoin的regex_left_join
library(fuzzyjoin)
library(dplyr)
regex_left_join(data2, data1, by = c("SR", "class" = "school")) %>%
select(SR = SR.x, school, class, Y)
# SR school class Y
# 1 SR1 S-1 S-1.2 3
# 2 SR1 S-1 S-1.5 3
# 3 SR1 S-1 S-1.7 3
# 4 SR2 S-1 S-1.1 4
# 5 SR2 S-1 S-1.2 4
# 6 SR2 S-1 S-1.3 4
# 7 SR2 S-1 S-1.6 4
# 8 SR2 S-2 S-2.3 1
# 9 SR2 S-2 S-2.9 1
# 10 SR2 S-4 S-4.2 2
# 11 SR3 S-2 S-2.1 5
# 12 SR3 S-2 S-2.3 5
# 13 SR4 S-1 S-1.5 2
# 14 SR4 S-1 S-1.6 2
# 15 SR4 S-5 S-5.1 3Stack Overflow用户
发布于 2020-05-10 04:20:34
您是否可以编辑您的问题，并使用dput将您的两个df放到一个我们更容易获取的形式中？
话虽如此，您需要做如下操作
# NOT RUN
library(tidyverse)
RESULT <- data2 %>%
mutate(comparison.id = str_detect(outcome.id, "^.+\\d+")) %>%
inner_join(data1, by = c("SR.id", "comparison.id"))页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/61702762
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