Tag: r packages

R script to install multiple R packages at once

Published on by kuanhoongLeave a comment

Often after the upgrade of R Base, there is a need to install back all the previously installed packages. Here is a simple code to reinstall all the necessary R packages to keep you up and running. The script will check whether the required packages have been installed, if not, it will install them accordingly.

#create a function to check for installed packages and install them if they are not installed
install <- function(packages){
  new.packages <- packages[!(packages %in% installed.packages()[, "Package"])]
  if (length(new.packages)) 
    install.packages(new.packages, dependencies = TRUE)
  sapply(packages, require, character.only = TRUE)
}

# usage
required.packages <- c("ggplot2", "dplyr", "reshape2", "devtools", "shiny", "shinydashboard", "caret","randomForest","gbm","tm","forecast","knitr","Rcpp","stringr","lubridate","manipulate","Scale","sqldf","RMongo","foreign","googleVis","XML","roxygen2","plotly","parallel","car")
install(required.packages)

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