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New posts in data.table
How to slice column with character object in data table in R? [duplicate]
Jun 14, 2026
r
data.table
Selection with a filter on row number and value
Jun 14, 2026
r
dataframe
data.table
subset
Easily check whether an objective was recorded in other variable?
Jun 12, 2026
r
dataframe
dplyr
data.table
plyr
data.table performance not scaling linearly on computing lagged differences of a column by group
Jun 12, 2026
r
performance
data.table
Lag value with dates
Jun 12, 2026
r
data.table
lag
Check if all values are numeric over multiple columns and convert them to numeric
Jun 11, 2026
r
dataframe
dplyr
data.table
tidyr
Implementing a rolling window using data.table
Jun 11, 2026
r
data.table
Sum in data.table grouping with condition
Jun 12, 2026
r
data.table
Index table beside plot
Jun 11, 2026
r
graph
plot
data.table
Filter on groups where where at the max value of one variable, another variable equals a particular value
Jun 10, 2026
r
filter
dplyr
data.table
grouping
Looping on rows of a data.table in R
Jun 10, 2026
r
loops
data.table
How to iterate within a data.table
Jun 10, 2026
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data.table
iteration
How to add column to data.table with values from list based on regex
Jun 09, 2026
regex
r
list
data.table
Create columns dynamically in data frame R and populate based on other column condition
Jun 09, 2026
r
dataframe
data.table
Efficient cross join with aggregation and filter
Jun 09, 2026
r
data.table
dplyr
sqldf
cross-join
Why indexing .SD with a number is faster than when the number is stored in a variable
Jun 08, 2026
r
performance
data.table
subset
Invalid first argument in get when using data.table in lapply
Jun 07, 2026
r
data.table
lapply
How to use the `env` parameter in data.table version 1.14.3
Jun 08, 2026
r
data.table
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