Error in count(., name) : object 'name' not found
>df %>% dplyr::count (name,type)# 注意指定dplyr包
# A tibble: 6 x 3
name type n
<chr><chr> <int>
1 Alice english 1
2 Alice math 1
3 Bob english 1
4 Bob math 1
5 Carol english 1
6 Carol math 1
思路：首先转为 matrix
然后再转为vector
data11 <- read.table("Dcs.txt",header=F,na.string="999.99")
ee <-as.matrix(data11)
dd <- as.vector(ee)
