install.load (version 1.0.4)

install_load: Check, Install and Load CRAN & USGS GRAN Packages

Description

Checks the local R library(ies) to see if the required package(s) is/are installed or not. If the package(s) is/are not installed, then the package(s) will be installed along with the required dependency(ies). This function pulls source or binary packages from the Revolution Analytics CRAN mirror and/or the USGS GRAN Repository. Lastly, the chosen package(s) is/are loaded.

Usage

install_load(package1, ...)

Arguments

package1

R package.

...

Any additional R packages.

Value

• Install and load package1 and other packages listed in the arguments ... and all of the dependencies.

source

Check if R package is installed then load library answered by maloneypatr is the source for the original function. See http://stackoverflow.com/questions/15155814/check-if-r-package-is-installed-then-load-library.

See Also

needs, install_packages, installed.packages, install.packages

Examples

library(install.load)
# This will install, if not already installed, and load the package(s)
install_load("chron")
install_load("chron", "data.table", "dataRetrieval", "EGRET", "dplyr")