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New posts in data.table
make combinations from one column of a data.table and sums from corresponding
Feb 05, 2026
r
data.table
Use dynamic names for CJ in data.table
Feb 05, 2026
r
join
merge
data.table
data.table: how to filter lines with %in% when not all variables are inside the group?
Feb 04, 2026
r
data.table
fread column with only NA values as POSIXct returns warning and a character column
Feb 03, 2026
r
datetime
data.table
fread
posixct
list data.tables in memory and combine by row (rbind)
Feb 01, 2026
r
dataframe
data.table
rbind
Rolling window function (uniqueN) in R by date range
Feb 02, 2026
r
data.table
rolling-computation
Understanding scope with non-standard evaluations in R data.table
Feb 02, 2026
r
scope
data.table
non-standard-evaluation
Fill data.table with NA-values, using the nearest non-na-observation
Feb 02, 2026
r
data.table
Count the number of overlaps between groups
Feb 01, 2026
r
dplyr
data.table
tidyverse
p-lang
rolling value based on an inequality *rolling* condition of a column in data.table R
Feb 01, 2026
r
data.table
conditional-statements
rolling-computation
inequality
Counting unique values based on two columns with repeated rows, R data frame
Feb 01, 2026
r
dataframe
count
data.table
remove consecutive values in a data table
Jan 31, 2026
r
data.table
na
How to add empty row to data.table if nrow=0?
Jan 30, 2026
r
dataframe
data.table
Find last date of previous week using data.table in R
Jan 29, 2026
r
data.table
How to determine groups which fulfill certain condition for two consecutive time periods in R
Jan 29, 2026
r
data.table
How can this R data.table join+group+summarise, operation be made a lot faster?
Jan 28, 2026
r
performance
data.table
Insert a Sequence of Dates For Every Date In a dataframe
Jan 26, 2026
r
dataframe
dplyr
data.table
tidyverse
Use previous row's calculated value to calculate current
Jan 27, 2026
r
dplyr
data.table
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