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New posts in 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
R change order of column values in a data.table according to a permutation
Dec 31, 2025
r
permutation
data.table
combine data.tables and sum the shared column
Jan 01, 2026
r
data.table
adding a large number of columns within a function by reference
Jan 01, 2026
r
data.table
Replace NaNs with NA
Jan 01, 2026
r
data.table
Why can't I remove current observation using .I in data.table?
Dec 31, 2025
r
data.table
R data.table ordered column lookup
Dec 31, 2025
r
data.table
Split data.frame by variable and apply function referring to concrete row
Dec 31, 2025
r
dataframe
data.table
plyr
Maximum value of one data.table column based on other columns
Dec 30, 2025
r
data.table
How to re-group rows based on correlation values
Dec 30, 2025
r
data.table
tidyverse
Retrieving dynamic sets of columns from a data.table
Dec 23, 2025
r
data.table
Filter grouped data with filter function and if else condition in R
Dec 24, 2025
r
dataframe
dplyr
filter
data.table
How to assign list as observation in data table?
Dec 24, 2025
r
dataframe
data.table
Assign mean values and/or conditional assignment for unordered duplicate dyads
Dec 24, 2025
r
dplyr
data.table
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