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New posts in data.table

R data.table loop subset by factor and do lm()

r data.table lm

Check frequency of data.table value in other data.table

r data.table

R: Roll up column values containing NA's by sum while grouping by ID's

r data.table aggregate plyr dplyr

melt a data.table with a column pattern

r data.table reshape reshape2

R: change column order in data.table for only some columns

r data.table

Split string and transpose result

r data.table dplyr

How to evaluate a string to filter an R data.table?

r data.table

Computing on multiple column names in a data.table

r data.table

Using dcast.data.table with date values and aggregation

r data.table dcast

Assign unique ID per multiple columns of data table

r group-by data.table

ggplot transparency on individual bar

r ggplot2 data.table

R Faster gregexpr for very large strings

regex r matrix data.table

Remove rows with NA in a group, given the group contains at-least one non NA value

r data.table

R flatten nested data.table

r nested data.table

How to efficiently calculate multiple quantiles of column z when grouping by columns (x, y)

r data.table

Find overlaps in time intervals by group and return subsetted data.frame

r dataframe data.table

aggregation with data.table in R

r data.table

How to count occurrences combinations in data.table in R

r data.table summarization

Calculate summary statistics (e.g. mean) on all numeric columns using data.table

r data.table

Can I programmatically update the type of a set of columns (to factors) in data.table?

r data.table r-factor
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