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New posts in data.table
Actions to speed up R calculations
Jan 23, 2026
r
plyr
data.table
Rolling join grouped by a second variable in data.table
Jan 23, 2026
r
join
data.table
How to efficiently aggregate multiple data.table columns by groups, N-at-a-time, where N is variable
Jan 23, 2026
r
optimization
data.table
Calculate max value across multiple columns by multiple groups
Jan 23, 2026
r
dplyr
data.table
Limiting the range of a merge with roll = "nearest"
Jan 23, 2026
r
merge
data.table
fuzzyjoin
concatenate names and values across columns in data.table, row by row
Jan 22, 2026
r
data.table
Do we need to convert single elements of j to a list when the overall result of j is a list anyway?
Jan 19, 2026
r
data.table
How to convert list (with multi elements) into string without turn to "c("xxx","xxx","xxx")" R
Jan 21, 2026
r
list
sorting
split
data.table
using eval in data.table
Jan 20, 2026
r
data.table
Is there an equivalent of dplyr data pronouns in data.table?
Jan 03, 2026
r
data.table
Fast dropping rows in data.table [duplicate]
Jan 03, 2026
r
data.table
Select one of many-to-many matches between data.table dt1$id and dt2$id such that dt1$id and dt2$id are unique in the result set
Jan 03, 2026
r
join
data.table
Appending a row of sums for each level of a factor
Jan 03, 2026
r
dplyr
data.table
data-manipulation
R generating new data.table slowdown
Jan 02, 2026
r
data.table
r extend data.table columns by filling row values
Jan 03, 2026
r
for-loop
data.table
Condition in rows, modify all columns without a loop
Jan 02, 2026
r
data.table
conditional-statements
rows
Dont drop empty levels with by=2 col in data.table
Jan 01, 2026
r
data.table
new column value in data.table for ID using quantile bins
Dec 31, 2025
r
data.table
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