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New posts in data.table
How to merge lists of vectors based on one vector belonging to another vector?
Jul 19, 2022
r
list
merge
data.table
How to merge all elements of a list with another data table on condition
Apr 22, 2022
r
list
merge
data.table
"recursive" self join in data.table
Oct 04, 2022
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recursion
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self-join
How to do faster list-column operations inside data.table
Mar 30, 2022
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mapply
furrr
R data.table use variable name for assignment in group by [duplicate]
Sep 14, 2022
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data.table
grouping
Preferred performant procedure for R data.table row-wise operations?
Feb 20, 2022
r
performance
data.table
rowwise
How can I subset the negation of a key value using R's data.table package?
Jan 16, 2020
r
data.table
Breaking a list of character strings into partitions
Jun 20, 2022
r
subset
plyr
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Turn vector output into columns in data.table?
May 31, 2019
r
data.table
Collapse data.table column values while grouping
Nov 27, 2019
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grouping
data.table
How to call a function that returns multiple rows and columns in a data.table?
Aug 09, 2018
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statistics
data.table
Can I make this dplyr + data.table task faster?
Jun 17, 2022
r
data.table
dplyr
R: Subsetting a data.table with repeated column names with numerical positions
Sep 16, 2021
r
data.table
How does data.table get the column name from j?
Aug 20, 2022
r
data.table
data.table drop key rows and summarize
Dec 08, 2021
r
data.table
Using function result again in j expression
Sep 06, 2022
r
data.table
Is there a way in data.table to assign ID's by group based upon an identifier? [duplicate]
Apr 28, 2021
r
data.table
dcast without ID variables
Mar 14, 2022
r
data.table
reshape2
Using variable in data.table group by clause
Oct 21, 2018
r
list
data.table
R Find the frequency and duration a wave is above a given value using conditional in data.table
Mar 27, 2022
r
conditional
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time-series
signal-processing
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