我的功能如下:
v2_city <-
function(city_name){
result <- v2[city == city_name]
result
}
v2_city是一个包含“city_name”,“offers”列的数据集。 我想创建一个过滤函数来保存作为对象分隔的过滤数据,并最终将它们保存为csv文件。
为此,我在列表中创建了城市名称,并希望使用for循环,如下所示:
list <- c(
'Osaka'
,'Paris'
,'Roma'
,'Barcelona'
,'Fukuoka'
,'Hong Kong')
for (item in list){
x <- v2[item]
}
这会将x文件过滤为HongKong。如何将所有单独的文件保存为对象,然后将它们写入循环中的csv?
答案 0 :(得分:1)
怎么样?
library(dplyr)
library(readr)
my_dataset = tibble(city = c("Osaka","Paris","Roma","Barcelona","Fukuoka","Hong Kong"), value = 1:6)
cities = c("Osaka","Paris","Roma","Barcelona","Fukuoka","Hong Kong")
for (j in 1:length(cities){
my_dataset %>%
filter(city == cities[[j]]) %>%
write_csv(paste0(cities[[j]],".csv"))
}