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New posts in data.table
R data.table fread suppress messages
Sep 23, 2021
r
data.table
R: Generic flattening of JSON to data.frame
Nov 01, 2022
json
r
dataframe
plyr
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concatenate values across columns in data.table, row by row
Mar 27, 2022
r
data.table
Set column value using the first next row in the same group that meets a condition
Mar 18, 2022
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data.table
Transform a set of columns in a data.table
Nov 18, 2022
r
data.table
split data.table
Oct 18, 2022
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data.table
split character columns and get names of field in string
Jul 16, 2022
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data.table
reshape
melt multiple groups of measure.vars
Mar 11, 2022
r
data.table
reshape
reshape2
Cannot use dput for data.table in R
Aug 31, 2022
r
data.table
How to order data within subgroups in data.table R
Nov 12, 2022
r
data.table
R data.table: subgroup weighted percent of group
Mar 13, 2021
r
data.table
grouping
Dynamically build call for lookup multiple columns
Aug 18, 2022
r
dynamic
data.table
lookup
filter rows in data.table with `by`
Mar 04, 2022
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data.table
Split a string column into several dummy variables
Sep 05, 2022
r
string
split
data.table
dummy-variable
Correlation between groups in R data.table
Oct 29, 2022
r
data.table
correlation
R data table - calculation for each row using all rows before current row
Apr 23, 2022
r
data.table
Which data.table syntax for left join (one column) to prefer
Nov 20, 2022
r
data.table
Create counter for runs of TRUE among FALSE and NA, by group
Apr 15, 2022
r
dplyr
data.table
rank
run-length-encoding
Recode a variable using data.table
Feb 11, 2022
r
data.table
recode
data.table alternative for dplyr mutate?
Sep 25, 2022
r
data.table
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