install rpy2 on Windows7 64bit for Python 2.7

Question

I am trying to build and install rpy2 Python Module. But got an error (see below).

I have R installed in C:\\Program Files\\R\\R-2.15.0\\ and R.h

Answer 1

Here's a link to the rpy2 Windows binaries, all Python versions and x86/x64:

http://www.lfd.uci.edu/~gohlke/pythonlibs/#rpy2

Answer 2

I tried all of these on my Windows 10 and got nowhere. When I did the pip, it said it was installed into the Anaconda version that I have been using for months, but when I tried an import rpy, it just gave an error.

Was going to give up, but then I slept on it a night and then I did the following from the command line:

• Deleted all my old Python instances including Anaconda
• Rebooted
• Reinstalled Anaconda (2.4.1 with Python version 2.7.11)
• Made sure python ran from the command line from any directory
• started my "mingw32" bash shell (the one that comes with git)
• Set my personal R_HOME environment variable to C:\Program Files\R\R-3.2.3
• Downloaded rpy2-2.7.5-cp27-none-win_amd64.whl from http://www.lfd.uci.edu/~gohlke/pythonlibs/#rpy2 as suggested above.
• Changed the working directory to my user Downloads directory
• Installed it with pip install rpy2-2.7.5-cp27-none-win_amd64.whl
• Started python and successfully imported and rn py2

Here is a screen capture of the final steps:

mwise@MWISE-OPTO ~/Downloads
$ pip install rpy2-2.7.5-cp27-none-win_amd64.whl
Processing c:\users\mwise\downloads\rpy2-2.7.5-cp27-none-win_amd64.whl
Requirement already satisfied (use --upgrade to upgrade): six in c:\users\mwise\appdata\local\continuum\anaconda2\lib\site-packages (from rpy2==2.7.5)
Requirement already satisfied (use --upgrade to upgrade): singledispatch in c:\users\mwise\appdata\local\continuum\anaconda2\lib\site-packages (from rpy2==2.7.5
)
Installing collected packages: rpy2
Successfully installed rpy2-2.7.5

mwise@MWISE-OPTO ~/Downloads
$ python
Python 2.7.11 |Anaconda 2.4.1 (64-bit)| (default, Dec  7 2015, 14:10:42) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
Anaconda is brought to you by Continuum Analytics.
Please check out: http://continuum.io/thanks and https://anaconda.org
>>> import rpy2
>>> import rpy2.robjects as robjects
>>> pi = robjects.r['pi']
>>> pi[0]
3.141592653589793
>>>

Hoping this will help someone down the line...

Answer 3

I am working through the same myself. The libraries etc. Located indicate that you are picking up the 32 bit version i386. Add "C:\Program Files\R\R-2.15.1\include" include directory may help force fix the problem. This is the farthest I have got:

building 'rpy2.rinterface._rinterface' extension
error: Unable to find vcvarsall.bat

With the MSVC express shell and R x64 and msys sh in path.

Answer 4

This is because your R include library is not in your CPPFLAGS enviroment variable. You should find the file R.h in your "C:\Program Files\R\R-2.15.0\include". In linux, you can add this to your .bashrc

export "$CPPFLAGS=-I/path-to-R/include $CPPFLAGS"

But i'm not familar to python and R in windows. That's all I can help.

Answer 5

My experience (2.7.9 (default, Dec 10 2014, 12:28:03) [MSC v.1500 64 bit (AMD64)]): - all binary installers - apparently rpy2 has unspecified dependencies - have numpy and scipy installed (win_amd64 binaries) with their unspecified dependencies

1. install R, install needed packages
2. install pywin32
3. "pip install singledispatch"
4. "pip install rpy2-2.5.6-cp27-none-win_amd64.whl"
5. update environment, e.g. os.environ['R_HOME'] = r'C:\Program Files\R\R-3.1.3' os.environ['R_USER'] = r'C:\Python27\Lib\site-packages\rpy2'