R Save a excel workbook with password protection

Question

I\'m a bit impressed because I couldn\'t find an answer so far.

I have a small R script that is loading data from one source and writing a few dozens Excel files fro

Answer 1

Overview

After reading How do I password-protect an Excel file created in R with write.xlsx?, it seems versioning of certain packages is at play here.

This might be particular to someone's environment, but this solution just helped a colleague and I write a data.frame to a password protected .xlsx file:

# install necessary packages -----
# note: downloading the latest versions of all packages from CRAN
install.packages(c("XLConnect", "XLConnectJars", "rJava", "xlsx", "openxlsx"))

# attach necessary packages ----
library(XLConnect)

# load but do not attach the write.xlsx() function from the xlsx package ----
xlsx::write.xlsx(x = mtcars, file = "mtcars.xlsx", password = "1234_fghj")

# confirm that the .xlsx file is password protected ----
openxlsx::openXL("mtcars.xlsx")

# session info ----
sessionInfo()
# R version 3.5.1 (2018-07-02)
# Platform: x86_64-redhat-linux-gnu (64-bit)
# Running under: Red Hat Enterprise Linux
# 
# Matrix products: default
# BLAS/LAPACK: /usr/lib64/R/lib/libRblas.so
# 
# locale:
# [1] LC_CTYPE=en_US.UTF-8         
# [2] LC_NUMERIC=C                 
# [3] LC_TIME=en_US.UTF-8          
# [4] LC_COLLATE=en_US.UTF-8       
# [5] LC_MONETARY=en_US.UTF-8      
# [6] LC_MESSAGES=en_US.UTF-8      
# [7] LC_PAPER=en_US.UTF-8         
# [8] LC_NAME=en_US.UTF-8          
# [9] LC_ADDRESS=en_US.UTF-8       
# [10] LC_TELEPHONE=en_US.UTF-8     
# [11] LC_MEASUREMENT=en_US.UTF-8   
# [12] LC_IDENTIFICATION=en_US.UTF-8
# 
# attached base packages:
# [1] stats     graphics  grDevices utils     datasets 
# [6] methods   base     
# 
# other attached packages:
# [1] XLConnect_0.2-15     XLConnectJars_0.2-15
# 
# loaded via a namespace (and not attached):
# [1] compiler_3.5.1 tools_3.5.1    yaml_2.2.0    
# [4] xlsxjars_0.6.1 rJava_0.9-10   xlsx_0.6.1