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New posts in data-manipulation

Diagonals to rows in data.frame

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How to filter a Pandas dataframe by timestamp functon using .query()

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Using R to insert a value for missing data with a value from another data frame

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Extract data elements found in a single column

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Going from a list of elements to chemical formula

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Given an R dataframe with column A, how do I create two new columns containing all ordered combinations of A

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base::ifelse() within dplyr::arrange() for conditional arrangement of grouped rows

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Comp. Efficent way of resetting sequence if condition met ( R )

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Faster equivalent to group_by %>% expand in R

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Loop Over Multiple Environment Objects R

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Calculating mean of means by groups with conditions in R

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Find the minimum date between two maximum dates based off unique values in a column

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Group by operarion in R

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Pulling data from a different data.frame with dplyr?

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Use a character vector in the `by` argument

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Cumulative minimum value by group

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Using effect of Traversable [] and Applicative Maybe in lens library

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Appending column values into new cell in the same row in Pandas dataframe

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How to mutate a column based on values occurring in a particular sequence?

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