r - How to install multiple packages?

Question

How would I got about installing multiple packages in R?

I tried the following code:

install.packages("EIAdata", "gdata", "ggmap", "ggplot2","gridExtra","ISOweek","kobe","lubridate","maps","MASS","memisc","pander","plyr","psych","Quandl","quantmod","reshape2","rgeos","Rgnuplot","RODBC","scales","sp","sqldf","stockPortfolio","stringi","stringr","XLConnect", "xlsReadWrite","zipcode")

This code works:

install.packages("ggplot2")

Why won't the line with the multiple packages work?

Answer 1

Elementary: form a vector via c(...):

 install.packages(c("EIAdata", "gdata", "ggmap", "ggplot2")) # rest omitted

so that you have one first argument of length > 1.

Personally, I prefer install.r from littler so I'd do (at the Unix command-line):

  install.r EIAdata gdata ggmap ggplot2    # rest omitted again

Note that there is no limit to the number of arguments. It was just easier for me to write this with four packages than the 20-some from your example.