我以前遇到过这个问题,但只是在链条之外编写了导出函数。是否有办法在 dplyr
链中包含一个 write.csv
语句呢?
library(dplyr)
data_set %>%
filter(Date == Sys.Date() - 1 | Date == Sys.Date()) %>%
write.csv('data_set_twodays.csv', row.names = F) %>%
filter(Date = Sys.Date()) %>%
write.csv('data_set_today.csv', row.names = F)
NULL
write.csv
没有返回值,所以这可能行不通。您可以包装write.csv
并确保返回数据...然后也许... - Justin