You can use the n() function from the dplyr package in R to count the number of observations in a group. Here…
dplyr in R
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How to Pass a String as Variable Name in dplyr
by Tutor AspireYou can use one of the following methods to pass a string as a variable name in dplyr: Method 1: Use get()…
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dplyr: How to Summarise Data But Keep All Columns
by Tutor AspireWhen using the summarise() function in dplyr, all variables not included in the summarise() or group_by() functions will automatically be dropped. However,…
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dplyr: How to Change Factor Levels Using mutate()
by Tutor AspireYou can use the following basic syntax in dplyr to change the levels of a factor variable by using the mutate() function:…
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How to Group By and Filter Data Using dplyr
by Tutor AspireYou can use the following basic syntax to group by and filter data using the dplyr package in R: df %>% group_by(team)…
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dplyr: How to Mutate Variable if Column Contains String
by Tutor AspireYou can use the following basic syntax in dplyr to mutate a variable if a column contains a particular string: library(dplyr) df…
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How to Calculate Standard Deviation Using dplyr (With Examples)
by Tutor AspireYou can use the following methods to calculate the standard deviation of values in a data frame in dplyr: Method 1: Calculate…
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How to Use ungroup() in dplyr (With Examples)
by Tutor AspireYou can use the ungroup() function in dplyr to ungroup rows after using the group_by() function to summarize a variable by group.…
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How to Select Rows of Data Frame by Name Using dplyr
by Tutor AspireYou can use the following syntax to select rows of a data frame by name using dplyr: library(dplyr) #select rows by name…
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How to Arrange Rows by Group Using dplyr (With Examples)
by Tutor AspireYou can use the following methods to arrange rows by group in dplyr: Method 1: Arrange Rows in Ascending Order by Group…