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Elongate data but also keep one of the original variable in R...

How to use if statements inside of groups in a dataframe in R?...

Collapsing rows by user with dplyr...

How to calculate median using lag/lead in R...

pivot_longer into several pairs of columns...

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Repeated event long format data to single multiple variable...

Subset columns based on condition, on a subset of columns (dplyr)...

using a "lookup" dataframe to map value pairings in R...

in dplyr::mutate, dplyr::starts_with works for .before but not .after?...

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Mutating a variable using a different-dimensioned lookup table...

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How to use the function facet_wrap() to plot time series data in ggplot2 in R...

Multiple column pivot/transpose using R dataframes...

Functional programming with dplyr: column_to_rownames() inside function...

tag many-to-many relationship when using left_join in dplyr...

Calculate Means and SDs for each column using dplyr´s "summarise_all"...

How to count the frequency of values per month so they are in the right order (Jan to Dec) over mult...

Can I calculate the standard error of all columns with the "summarise_all" function in R d...

Compute mutual gaze from individual gazes...

Error: Why is dplyr not reading a factor level in my data frame when using the functions group_by() ...

find the first TRUE within a group...