Package: dtlog 0.2.0.9000

dtlog: Logging for 'data.table' Operations

Provides feedback about 'data.table' operations. 'dtlog' redefines the subsetting method for data tables as well as several functions exported by 'data.table' so that each operation prints a short message describing what it did: how many rows were removed, which columns were added, updated or dropped, how many groups an aggregation produced, and so on. The operations themselves are left untouched, including modification by reference. It also provides dttable(), which describes the variables a single data table holds and passes every other call on to base::table() unchanged. Inspired by the 'tidylog' package.

Authors:Akihiro Shiroshita [aut, cre, cph]

dtlog_0.2.0.9000.tar.gz
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manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
dtlog/json (API)

# Install 'dtlog' in R:

install.packages('dtlog', repos = c('https://akishiroshita.r-universe.dev', 'https://cloud.r-project.org'))

Bug tracker:https://github.com/akishiroshita/dtlog/issues

Pkgdown/docs site:https://akishiroshita.github.io

On CRAN:

4.40 score 3 scripts 202 downloads 46 exports 1 dependencies

Last updated from:3f3c705524. Checks:9 OK. Indexed: yes.

Target	Result	Time
linux-devel	OK	141
source / vignettes	OK	213
linux-release	OK	137
macos-release	OK	78
macos-oldrel	OK	114
windows-devel	OK	78
windows-release	OK	77
windows-oldrel	OK	79
wasm-release	OK	107

Exports:[.data.table as.data.table copy cube dcast dcast.data.table dt_log dt_log_end dt_log_file dtlog_pause dtlog_resume dtlog_summary dttable duplicated.data.table fintersect foverlaps fread fsetdiff fsetequal funion fwrite groupingsets head.data.table melt melt.data.table merge.data.table na.omit.data.table rbindlist rollup set setattr setcolorder setDF setdroplevels setDT setindex setindexv setkey setkeyv setnafill setnames setorder setorderv split.data.table tail.data.table unique.data.table

Dependencies:data.table

Logging a data.table pipeline

Rendered fromdtlog.Rmdusingknitr::rmarkdown

Last update: 2026-08-22
Started: 2026-08-18

Help page	Topics
Subset, aggregate and update a data.table, with a log	[.data.table
Convert an object to a data table, with a log	as.data.table
Copy a data table, with a log	copy
Write the code and its log to a text file	dt_log dt_log_end dt_log_file
Pause and resume logging	dtlog_pause dtlog_resume
Log a summary of a data table	dtlog_summary
Describe the variables of a data table	dttable
Join two data tables on overlapping intervals, with a log	foverlaps
Read a file into a data table, with a log	fread
Write a data table to a file, with a log	fwrite
Aggregate over several grouping sets, with a log	cube groupingsets grouping_sets rollup
First or last rows of a data table, with a log	head.data.table head_tail tail.data.table
Merge two data tables, with a log	merge.data.table
Reshape a data table, with a log	dcast dcast.data.table melt melt.data.table reshape
Row operations with a log	duplicated.data.table fintersect fsetdiff fsetequal funion na.omit.data.table rbindlist rows unique.data.table
Modify a data table by reference, with a log	set setattr setcolorder setDF setdroplevels setDT setindex setindexv setkey setkeyv setnafill setnames setorder setorderv set_functions
Split a data table, with a log	split.data.table

Package: dtlog 0.2.0.9000

dtlog: Logging for 'data.table' Operations

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