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New posts in data.table

Group consecutive rows in a data table in R

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How to get the difference in value between subsequent observations (country-years)?

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Bi-weekly binning with data table

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Convert list column to a string in place

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Transpose dataframe without t(), and using spread(), cast(), or melt()

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data.table merge() with NA in by column

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How to de-aggregate binomial response data from individuals with the same covariates to bernoulli and vice-versa?

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subsetting ID and dates in data.table R

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How to concatenate rows based on group as quickly as possible

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Inconsistent output of data.table using apply(.SD, 1, FUN)

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R data.table - how to use assigned variables as column names for computing summaries _and_ grouping

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r - data.table and testthat package

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How can I extract the rows from a large data set by common IDs and take the means of these rows and make a column having these IDs

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Loop through unique values of a column and create multiple columns

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