title: Issue plotting with ggmap in R
body: <p>I am trying to make a map using ggmap pulling the image from google. Below is my code where I am trying to pull a plot of Utah and then plot it. </p>
  
  <p>The plot will not be made because of the error that I receive: "error in as.vector(y) : attempt to apply non-function."</p>
  
  <p>Any clue on what is going on and why it won't work?</p>
  
  <pre><code>R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
  #pull map of Utah
  
  Ut.map &lt;- get_map(location=c(-111, 39.5), zoom=7, maptype="roadmap")
  
  Map from URL : http://maps.googleapis.com/maps/api/staticmap?center=39.5,-111&amp;zoom=7&amp;size=640x640&amp;scale=2&amp;maptype=roadmap&amp;language=en-EN&amp;sensor=false
  
  ggmap(Ut.map)
  
  Error in as.vector(y) : attempt to apply non-function
  </code></pre>
  
  <p>Edit: 11/14/2016 4:00 pm</p>
  
  <p>I updated R, Rstudio, and ggplot2. Now I receive this error message when I try to load ggplot2:</p>
  
  <pre><code>library(ggplot2)
  Error in loadNamespace(j &lt;- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) :
  there is no package called ‘Rcpp’
  Error: package or namespace load failed for ‘ggplot2’
  </code></pre>
  
  <p>I tried to install Rcpp and I receive this message:</p>
  
  <pre><code>install.packages("Rcpp")
  Installing package into ‘C:/Users/justi/Documents/R/win-library/3.3’
  (as ‘lib’ is unspecified)
  trying URL
  'https://cran.rstudio.com/bin/windows/contrib/3.3/Rcpp_0.12.7.zip'
  Content type 'application/zip' length 3265506 bytes (3.1 MB)
  downloaded 3.1 MB
  
  package ‘Rcpp’ successfully unpacked and MD5 sums checked
  Warning in install.packages :
  unable to move temporary installation ‘C:\Users\justi\Documents\R\win-     
  library\3.3\file150426f11cb7\Rcpp’ to ‘C:\Users\justi\Documents\R\win-  
  library\3.3\Rcpp’
  
  The downloaded binary packages are in
  C:\Users\justi\AppData\Local\Temp\RtmpesXik0\downloaded_packages
  </code></pre>
  
  <p>Now I can't run anything related to ggplot or anything. My new R details are:</p>
  
  <pre><code>R version 3.3.2 (2016-10-31) -- "Sincere Pumpkin Patch"
  Copyright (C) 2016 The R Foundation for Statistical Computing
  Platform: x86_64-w64-mingw32/x64 (64-bit)
  </code></pre>