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Mutate one df based on the sum of a column in another df matching criteria...

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dplyr mutate sequence by n levels of grouping by variable...

How can I mutate across all columns of a dataframe using a function like separate that seems to be e...

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Condensing wide dataframe with columnwise operations...

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making four new columns based on 8 existing columns...

mutate_if multiple conditions along with case_when in R...

adding a new column to a datframe for 3 condition cases...

In R conditional statement with lag value and starting value...

Flagging Outliers using while loop and dynamic names along with mutate R...

mutate across columns with ifelse...

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Replacing unique values in vector with names based on a key...

Convert temperature data from Kelvin to Celsius in multiple columns...

Subset large dataframe over distinct singular character variable column value...

R calculate percentage of unique instances over total sum of different variable...

Difference from the mean by column...

Apply a self-made function with mutate across...