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New posts in data.table
Define empty data.table directly with the correct data type
Aug 18, 2026
r
dplyr
data.table
How to match pattern against multiple strings and store in data.frame in R
Aug 17, 2026
r
data.table
pattern-matching
string-matching
cut scoping link between key and data.frame for data.table
Aug 15, 2026
r
data.table
How to calculate a variable that select the maximum range value out of several consecutive columns
Aug 17, 2026
r
dplyr
data.table
How to find (not replace) leading NAs, gaps, and final NAs in data.table columns by category
Aug 16, 2026
r
data.table
Use syntactically invalid names in j data.table
Aug 16, 2026
r
data.table
Calculate timestamps for data with known frequency and missing data
Aug 14, 2026
r
dplyr
timestamp
data.table
How to lag values by number of days in a data table
Aug 14, 2026
r
data.table
concatenating column names with column data in R (using data.table)
Aug 14, 2026
r
data.table
concatenation
multiple-columns
An alternative to mutate_if in data.table
Aug 14, 2026
r
dplyr
data.table
What is the fastest way to update a data set in R?
Aug 13, 2026
r
performance
dataframe
data.table
data.table doesn't modify by reference if the object is freshly loaded from file?
Aug 13, 2026
r
data.table
Calculation of failure rate and date time manipulation in R
Aug 11, 2026
r
data.table
dplyr
reshape2
How do I filter rows depending on values in semi-colon separated columns?
Aug 11, 2026
r
data.table
Replacing data.table observations; vector approach
Aug 10, 2026
r
functional-programming
data.table
Using plyr to match column values in two data frames
Aug 10, 2026
r
plyr
data.table
Use OpenMP on M2 Mac with R and data.table
Aug 10, 2026
r
macos
data.table
openmp
apple-m1
How to estimate mean and st.dev in each row by selected columns?
Aug 09, 2026
r
data.table
How to select rows comparing multiple columns with the same value?
Aug 09, 2026
r
data.table
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