Lightweight Logging for R Scripts

Provides flexible but lightweight logging facilities for R scripts. Supports priority levels for logs and messages, flagging messages, capturing script output, switching logs, and logging to files or connections.

Lightweight logging for R scripts.

luzlogr is available from CRAN, and can be installed using install.packages(). To install the latest, developmental version from this GitHub repository:

  1. Make sure you have devtools installed from CRAN and loaded.
  2. install_github("bpbond/luzlogr")

Either way, you can then do:

help(package = 'luzlogr')

Three functions - openlog(), printlog(), closelog() - provide logging of script output. They provide features including priority levels for logs and messages; optionally capturing all output (via sink); switching between logs; and logging to a text file or arbitrary connection. For example:


The resulting log file test.log looks something like this:

Thu Sep 17 08:46:59 2015  Opening ./test.log
Thu Sep 17 08:46:59 2015  message
Thu Sep 17 08:46:59 2015  Closing test.log  flags = 0
R version 3.2.0 (2015-04-16)
Platform: x86_64-apple-darwin13.4.0 (64-bit)
Running under: OS X 10.10.5 (Yosemite)

For more details, see the vignette and documentation.


luzlogr 0.2

  • Added option to automatically close all log files if an error occurs; see ?closelog.

luzlogr 0.1.3

  • Log files now properly tracked even if working directory changes.
  • Added option to flush (immediately write) log messages.

luzlogr 0.1.1

  • Vignette added.

luzlogr 0.1

  • First release of the luzlogr package.
  • More information at

Reference manual

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0.2.0 by Ben Bond-Lamberty, a year ago

Browse source code at

Authors: Ben Bond-Lamberty [aut, cre]

Documentation:   PDF Manual  

MIT + file LICENSE license

Imports assertthat

Suggests testthat, knitr, rmarkdown

See at CRAN