title: installing the package xtsExtra on a windows machine
body: <p>I am having a bit of difficulty installing the R package <code>xtsExtra</code> on a windows machine..., and not too sure whats wrong...</p>
  
  <pre><code>&gt; install.packages("xtsExtra", ,repos="http://R-Forge.R-project.org")
  Warning in install.packages :
    package ‘xtsExtra’ is not available (for R version 3.0.0)
  Error in install.packages : argument is missing, with no default
  &gt; sessionInfo()
  R version 3.0.0 (2013-04-03)
  Platform: i386-w64-mingw32/i386 (32-bit)
  
  locale:
  [1] LC_COLLATE=English_United Kingdom.1252  LC_CTYPE=English_United Kingdom.1252   
  [3] LC_MONETARY=English_United Kingdom.1252 LC_NUMERIC=C                           
  [5] LC_TIME=English_United Kingdom.1252    
  
  attached base packages:
  [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  loaded via a namespace (and not attached):
  [1] tools_3.0.0
  &gt; install.packages("xtsExtra", repos="http://R-Forge.R-project.org")
  Warning in install.packages :
    package ‘xtsExtra’ is not available (for R version 3.0.0)
  Installing package into ‘C:/Users/HMaeda/Documents/R/win-library/3.0’
  (as ‘lib’ is unspecified)
  
     package ‘xtsExtra’ is available as a source package but not as a binary
  
  Warning in install.packages :
    package ‘xtsExtra’ is not available (for R version 3.0.0)
  &gt; require(xtsExtra)
  Loading required package: xtsExtra
  Warning message:
  In library(package, lib.loc = lib.loc, character.only = TRUE, logical.return = TRUE,  :
    there is no package called ‘xtsExtra’
  </code></pre>
  
  <p>As ever any help would be greatly appreciated.</p>
  
  <p>Thanks in advance.</p>