Is there something wrong in the code? I'm getting errors when I try to execute. Help needed dear friends:)
You're just missing the data argument in your group by.
library(dplyr) newdata <- filter(starwars, gender == "female") newdata <- group_by(newdata, species) newdata <- summarize(newdata, mean_ht = mean(height, na.rm = TRUE))
The error is in your second line where your
group_by does not specify the data, i.e. newdata.
You are better off using the pipe operator
%>% for such workflows.
But in the output I don't see the gender value getting printed how can I make it happen?
I don't see the gender value getting printed in the output so how can I make it happen?
You'll need to include gender in the
group_by() function in that case, but you have already filtered gender in your first statement.
Just on formatting of the code, typically easier to read it like this:
newdata <- filter(starwars, gender == "female") %>% group_by(species) %>% summarize( mean_ht = mean(height, na.rm = TRUE))
ie. filter, then do, group by, then summarize
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