r - dplyr top_n remove 0 in summary -


how remove 0 in table summary when using top_n dplyr?

library(ggplot2) library(dplyr) data("diamonds") diamonds #set diamonds data.frame  manualtest = diamonds %>%   count(cut)  %>%   top_n(3)   table(manualtest$cut)

result

 fair      good   premium     ideal      0         0         1         1         1

expected result 

   premium     ideal    1         1         1

if str(manualtest) see manualtest$cut factor variable. solution make character. 3 options

1) 
manualtest = diamonds %>% count(cut)  %>% mutate(cut = as.character(cut)) %>%  top_n(3)
2) 
manualtest$cut <- as.character(manualtest$cut)

then run table(manualtest$cut)

3) 
table(as.character(manualtest$cut))

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