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New posts in data.table
How do I group by a variable and list by a random order in data.table?
Mar 26, 2023
r
permutation
data.table
sample
R: select range of columns in data.table
Mar 25, 2023
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select
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data.table
How do I update a single row in each group?
Mar 23, 2023
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data.table
Use of .N and .SD in one call
Mar 22, 2023
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data.table
Aggregate only successive rows in data.table
Mar 23, 2023
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data.table
Nested groupings with data.table
Mar 22, 2023
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data.table
Aggregating duplicate rows by taking sum
Mar 22, 2023
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data.table
plyr
data.table aggregation to list column
Mar 22, 2023
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data.table
dcast renaming all variables to start with a number
Mar 21, 2023
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data.table
reshape2
ggvis use of " := " in combination with data.table
Mar 21, 2023
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data.table
ggvis
Subset and join a data frame by matching on nested list in R
Mar 21, 2023
r
dataframe
data.table
dplyr
Utilizing several reference values in a lookup table
Mar 19, 2023
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data.table
Working with temporary columns (created on-the-fly) more efficiently in a dataframe
Mar 19, 2023
r
data.table
dplyr
How to sum and count on a data.table grouped by values in R
Mar 19, 2023
r
data.table
Why is it faster to evaluate in `j` than with `$` in a `data.table`?
Mar 18, 2023
r
data.table
Bin Granges with Gaps
Sep 02, 2025
r
data.table
bioconductor
genomicranges
Accessing column name within the SD construct
Sep 03, 2025
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data.table
Data table in R: Counting NA values in columns by using column index
Sep 02, 2025
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data.table
return multiple columns from data.table aggregation [duplicate]
Sep 01, 2025
r
data.table
aggregation
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