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New posts in 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
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dataframe
dplyr
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tidyverse
Use previous row's calculated value to calculate current
Jan 27, 2026
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dplyr
data.table
Can a SQL non-equi join task (example below) be done (faster and /or neater) using data.table?
Jan 26, 2026
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data.table
Multiply a number of columns by a specific column [duplicate]
Jan 25, 2026
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data.table
Fuzzy matching strings within a single column and documenting possible matches
Jan 25, 2026
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data.table
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sapply
agrep
R data.table rolling join with limit window in number of data points
Jan 25, 2026
r
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fast way to calculate moving average/rolling function which allows custom weights
Jan 24, 2026
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data.table
moving-average
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data.table := assigning and grouping
Jan 23, 2026
r
data.table
grouping
assign
Update column of dataframe1 based on column of dataframe2 + create new row if column1 is not empty
Jan 23, 2026
r
dataframe
dplyr
data.table
Actions to speed up R calculations
Jan 23, 2026
r
plyr
data.table
Rolling join grouped by a second variable in data.table
Jan 23, 2026
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join
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How to efficiently aggregate multiple data.table columns by groups, N-at-a-time, where N is variable
Jan 23, 2026
r
optimization
data.table
Calculate max value across multiple columns by multiple groups
Jan 23, 2026
r
dplyr
data.table
Limiting the range of a merge with roll = "nearest"
Jan 23, 2026
r
merge
data.table
fuzzyjoin
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