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New posts in data.table
More efficient method for counting open cases as of creation time of each case
Dec 08, 2025
r
performance
data.table
dplyr
vectorization
Sibling network using data.table
Dec 08, 2025
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data.table
Combine several dcast data.table (which share same key) efficiently
Dec 08, 2025
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data.table
dcast
R custom data.table function with multiple variable inputs
Dec 08, 2025
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R data.table: Count Occurrences Prior to Current Measurement
Dec 07, 2025
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function
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Getting rid of wash out rows in R dataframe by group
Dec 08, 2025
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dataframe
data.table
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Find values in a given interval without a vector scan
Dec 08, 2025
r
data.table
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Creating new data table based on ifelse on old data table
Dec 08, 2025
r
if-statement
data.table
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How to add the condition that there is a minimum amount of data to calculate a variable in `data.table`
Dec 05, 2025
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R: Convert obscure table into matrix
Dec 06, 2025
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Summarize a data.table with unreliable data
Dec 06, 2025
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data.table
R data.table: update with shift() does not work as expected
Dec 06, 2025
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data.table
fread with gunzip: What's the more memory efficient way?
Dec 05, 2025
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memory
data.table
gzip
fread
How to replace column with strings with look-up codes in R
Dec 05, 2025
r
dataframe
data.table
str-replace
gsub
Using a variable to specify a column name within `data.table`
Dec 05, 2025
r
data.table
How can I reshape a data.table (long into wide) without doing a function like sum or mean?
Dec 05, 2025
r
data.table
reshape
reshape2
splitstackshape
R data.table interval
Dec 04, 2025
r
data.table
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For each `pop` get frequencies of the elements of `id`
Dec 04, 2025
r
data.table
Conditionally fill column by other columns values
Dec 04, 2025
r
data.table
conditional-statements
How to combine data.table with a loop
Dec 04, 2025
r
data.table
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