我有一个数据框 md:
md <- data.frame(x = c(3,5,4,5,3,5), y = c(5,5,5,4,4,1), z = c(1,3,4,3,5,5),
device1 = c("c","a","a","b","c","c"), device2 = c("B","A","A","A","B","B"))
md[2,3] <- NA
md[4,1] <- NA
md
我想使用dplyr按设备1/设备2组合计算均值:
library(dplyr)
md %>% group_by(device1, device2) %>% summarise_each(funs(mean))
然而,我得到了一些NA值。我希望这些NA值被忽略(na.rm = TRUE)- 我尝试过了,但是函数不想接受这个参数。 这两行代码都会导致错误:
md %>% group_by(device1, device2) %>% summarise_each(funs(mean), na.rm = TRUE)
md %>% group_by(device1, device2) %>% summarise_each(funs(mean, na.rm = TRUE))
funs(mean= mean(., na.rm=TRUE))
。 - akrun