如何將本地數據幀轉換爲R中的常規數據幀？

Question

我用下面的代碼：

library(dplyr) 
by.tweet %>% 
group_by(tweet) %>% 
summarise(created = sum(created), number = sum(number)) 
data.frame() 

和它打印：

Source: local data frame [3 x 3] 
tweet created number 
1 negative <NA> 57876 
2 neutral <NA> 124029 
3 positive <NA> 92244 

但我想這在常規的數據幀。我怎麼寫這個？謝謝！

Answer 1

使用as.data.frame轉換爲data.frame即

by.tweet %>% 
    group_by(tweet) %>% 
    summarise(created = sum(created), number = sum(number)) %>% 
    as.data.frame()