r rattle fancyrpartplot errors

Question

Trying to run fancyrpartplot for the first time and running into errors.

> fancyRpartPlot(rpart.sub1)
Error in loadNamespace(name) : there is no package called ‘rpart.plot’

I've searched and searched but can't find a solution. I've tried removing rattle and RGtk2 and keep getting the same errors. Think its something to do with GTK+ but can't find anything that shows how to delete and reinstall GTK+

> remove.packages("RGtk2")
Removing package from ‘C:/Program Files/R/R-3.1.0/library’
(as ‘lib’ is unspecified)
> remove.packages("rattle")
Removing package from ‘C:/Program Files/R/R-3.1.0/library’
(as ‘lib’ is unspecified)

Restarting R session...

> install.packages("rattle")
also installing the dependency ‘RGtk2’

trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/RGtk2_2.20.31.zip'
Content type 'application/zip' length 13914471 bytes (13.3 Mb)
opened URL
downloaded 13.3 Mb

trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/rattle_4.0.0.zip'
Content type 'application/zip' length 3728887 bytes (3.6 Mb)
opened URL
downloaded 3.6 Mb

package ‘RGtk2’ successfully unpacked and MD5 sums checked
package ‘rattle’ successfully unpacked and MD5 sums checked

The downloaded binary packages are in
    C:\Users\xxx\AppData\Local\Temp\RtmpsLxgOv\downloaded_packages
> require(RGtk2)
Loading required package: RGtk2
Error in inDL(x, as.logical(local), as.logical(now), ...) : 
  unable to load shared object 'C:/Program Files/R/R-3.1.0/library/RGtk2/libs/x64/RGtk2.dll':
  LoadLibrary failure:  The specified module could not be found.

In addition: Warning message:
package ‘RGtk2’ was built under R version 3.1.3 
trying URL 'http://ftp.gnome.org/pub/gnome/binaries/win64/gtk+/2.22/gtk+-bundle_2.22.1-20101229_win64.zip'
Content type 'application/zip' length 25830230 bytes (24.6 Mb)
opened URL
downloaded 24.6 Mb

Learn more about GTK+ at http://www.gtk.org
If the package still does not load, please ensure that GTK+ is installed and that it is on your PATH environment variable
IN ANY CASE, RESTART R BEFORE TRYING TO LOAD THE PACKAGE AGAIN
Warning messages:
1: Failed to load RGtk2 dynamic library, attempting to install it. 
2: In dir.create(config_path, recursive = TRUE) :
  'C:\Program Files\R\R-3.1.0\library\RGtk2\gtk\x64\etc\gtk-2.0' already exists
> require(rattle)
Loading required package: rattle
Rattle: A free graphical interface for data mining with R.
Version 4.0.0 Copyright (c) 2006-2015 Togaware Pty Ltd.
Type 'rattle()' to shake, rattle, and roll your data.
Warning message:
package ‘rattle’ was built under R version 3.1.3 
> fancyRpartPlot(rpart.sub1)
Error in loadNamespace(name) : there is no package called ‘rpart.plot’

Interestingly the file it says is missing C:/Program Files/R/R-3.1.0/library/RGtk2/libs/x64/RGtk2.dll is actually there, I've checked manually.

At this point I've removed rattle and RGtk2 several times. Each time RGtk2 installs GTK+ again but nothing changes.

Any help greatly appreciated.

edit: Should have maybe added that if I type rattle() rattle appears to load correctly.

Answer 1

Per @phiver rpart.plot was missing

Answer 2

Do according to the warning "Error in loadNamespace(name) : there is no package called ‘rpart.plot’", type: install.packages("rpart.plot").