Error of filter and arrange function

data("ToothGrowth")
View(ToothGrowth)
filterer_tg <- filter(ToothGrowth, dose == 0.5)
Error: object 'dose' not found
arrange(ToothGrowth, len)
Error in arrange(ToothGrowth, len) : could not find function "arrange"
The dplyr packages are installed but there are still errors when codes run. :exploding_head:

You just have to load the dplyr library with library(dplyr) before using its functions. A very small number of libraries included with the R executable are loaded automatically. Any libraries you download and install have to be loaded explicitly before use.

1 Like

Many thanks! It works! :smiling_face_with_three_hearts:

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