Efficient way to install and load R packages
The most common method of installing and loading packages is using the install.packages() and library() function respectively. Let us see a brief about these functions –
- Install.packages() is used to install a required package in the R programming language.
- library() is used to load a specific package in R programming language
In the case where multiple packages have to installed and loaded these commands have to be specified repetitively. Thus making the approach inefficient.
Given below are ways by which this can be avoided.
The most efficient way to install the R packages is by installing multiple packages at a time using. For installing multiple packages we need to use install.packages( ) function again but this time we can pass the packages to be installed as a vector or a list with each package separated by comma(,).
install.packages ( c(“package 1″ ,”package 2”, . . . . , “package n”) )
install.packages(“package1″,”package2”, . . . . , “package n”)
Similarly, package can be loaded efficiently by one of the following ways.
Method 1: Using library()
In this, the packages to be loaded are passed to the function but as a list with each package separated by a comma (,).
library(“package1”, “package2″, . . . . ,”package n”)
Method 2: Using pacman
For efficient package loading, we need to install another package called pacman. To load multiple packages using pacman we use a function called p_load( ).
pacman::p_load( package 1 , . . . . , package n)
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