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New posts in data.table
dynamically assign number of splits in data.table tstrsplit
Jun 19, 2021
r
split
data.table
dplyr rowwise by some columns
Mar 27, 2022
r
data.table
dplyr
Randomise order of groups in R data table while preserving internal order of groups
May 28, 2022
r
data.table
Why does `substitute` work in multiple lines, but not in a single line?
Mar 23, 2022
r
data.table
non-standard-evaluation
How can I evaluate (or create) an on the fly column in data.table in r
Apr 15, 2022
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data.table
Number of Unique Obs by Variable in a Data Table
Apr 22, 2022
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unique
data.table
variable-length
Why is intersect(...) faster than data table join?
Oct 15, 2017
r
data.table
Retain and lag function in R as SAS
Oct 16, 2022
r
data.table
data.table - group by all except one column
Jan 31, 2017
r
data.table
data.table := assignments when variable has same name as a column
Jul 20, 2021
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data.table
Rolling Text Concatenation with Data.Table in R
Jul 08, 2021
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data.table
data.table - subsetting based on variable whose name is a column, too
Oct 15, 2022
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data.table
How to find the last or next entry using R package data.table and rolling joins
Nov 04, 2022
r
data.table
Adding values in two data.tables
Nov 16, 2022
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data.table
from data table, randomly select one row per group
Aug 31, 2022
r
data.table
subset
random-sample
random
Count cumulative unique factors separated by semicolon Grouped by Name
Sep 10, 2022
r
data.table
dplyr
zoo
String splitting data.table column produces NAs
Mar 20, 2021
r
string
data.table
text-processing
subsetting a data.table based on a named list
Mar 07, 2022
r
list
data.table
subset
Build a square adjacency matrix from data.frame or data.table
Mar 25, 2022
r
data.table
adjacency-matrix
Group a data.table using a column which is list
Aug 28, 2022
r
data.table
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