Created
October 14, 2014 19:59
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Function to install (if necessary) and load R packages
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| # From http://stackoverflow.com/questions/4090169/elegant-way-to-check-for-missing-packages-and-install-them | |
| install_and_load_packages <- function(x){ | |
| for( i in x ){ | |
| # require returns TRUE invisibly if it was able to load package | |
| if( ! require( i , character.only = TRUE ) ){ | |
| # If package was not able to be loaded then re-install | |
| install.packages( i , dependencies = TRUE ) | |
| # Load package after installing | |
| require( i , character.only = TRUE ) | |
| } | |
| } | |
| } |
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This functionality is now, and probably was before, in pacman::p_load.