title: Unable to install forecast package in R
body: <p>When I run the following commmand:</p>
  
  <pre><code>  install.packages('forecast', dependencies = TRUE)
    library(forecast)
  </code></pre>
  
  <p>I get the error:</p>
  
  <blockquote>
    <p>Error in loadNamespace(j &lt;- i[[1L]], c(lib.loc, .libPaths()),
    versionCheck = vI[[j]]) :    there is no package called ‘ggplot2’ In
    addition: Warning message: package ‘forecast’ was built under R
    version 3.2.5  Error: package or namespace load failed for ‘forecast’</p>
  </blockquote>
  
  <p>Anyone has had the same problem? I am using R Studio Version 1.1.456</p>