Data Analysis/깨R지식
[R] 1/1~12/31까지 존재하는 파일들을 한번에 불러와서 합치기
[지현]
2019. 3. 18. 00:38
R: 1/1~12/31까지 존재하는 파일들을 한번에 불러와서 합치기
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library(rio)
monthDays <- c(31, 28, 31, 30, 31, 30, 31,31, 30, 31, 30, 31)
result <- data.frame()
for(i in 1:12){
m <- ifelse(i<10, paste0("0",i), i)
dataPath <- paste0("LOCAL_PEOPLE_2017", m)
for(j in 1:monthDays[i]){
j <- ifelse(j<10, paste0("0",j), j)
dataPath2 <- paste0(dataPath, j, ".csv")
data <- import(dataPath2)
data <- data[, c(3,5)]
colnames(data) <- c("location", "livingPeolple")
data$location <- data$location %/% 1000
split_data <- split(data, data$location)
for(k in 1:length(split_data)){
location <- names(split_data[k])
peopleFlowSum <- sum(split_data[[k]]$livingPeolple)
temp <- data.frame(location, peopleFlowSum)
result <- rbind(result, temp)
}
print(paste0(dataPath2, " is done") )
}
}
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