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writeLog

An R package providing writeLog(), a helper that writes the printed output of a named list of R objects to a .txt file in a log directory, one element after another, each preceded by its list name as a heading.

Installation

# install.packages("devtools")
devtools::install_github("jeffzifanwu/writeLog")

Usage

library(writeLog)

writeLog(
  list(contents1 = summary(1:10), contents2 = mean(1:10)),
  fileName = "allContents",
  version  = "v1",
  desc     = "All contents",
  logDir   = "log"
)

This writes log/v1_allContents.txt, with each list element preceded by its name (or a positional heading like [[2]] for unnamed elements). Pass append = TRUE to add to an existing log file instead of overwriting it.

From the command line

To set the version when running a script from the command line, read it from the script’s arguments:

# analysis.R
args <- commandArgs(trailingOnly = TRUE)

writeLog(
  list(contents1 = summary(1:10)),
  fileName = "allContents",
  version  = args[1],
  logDir   = "log"
)

Rscript analysis.R v2   # writes log/v2_allContents.txt

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.