问题

I'm trying to install rpy2 on my computer, but I wasn't able to do it.

I downloaded the source package and I tryed to install Rpy2 (rpy2-2.3.2) using the command python setup.py install. This is the result:

running install
running build
running build_py
running build_ext
"C:\PROGRA~1\R\R-215~1.2\bin\R" CMD config --ldflags
"C:\PROGRA~1\R\R-215~1.2\bin\R" CMD config --cppflags
"C:\PROGRA~1\R\R-215~1.2\bin\R" CMD config LAPACK_LIBS

returned an empty string.

"C:\PROGRA~1\R\R-215~1.2\bin\R" CMD config BLAS_LIBS

returned an empty string.

Configuration for R as a library:
    include_dirs: ('C:/PROGRA~1/R/R-215~1.2/include/i386', 'C:/PROGRA~1/R/R-215~1.2/include')
    libraries: ('R',)
    library_dirs: ('C:/PROGRA~1/R/R-215~1.2/bin/i386',)
    extra_link_args: ()
   # OSX-specific (included in extra_link_args)
    framework_dirs: ()
    framework: ()
building 'rpy2.rinterface._rinterface' extension
creating build\temp.win32-2.7
creating build\temp.win32-2.7\Release
creating build\temp.win32-2.7\Release\rpy
creating build\temp.win32-2.7\Release\rpy\rinterface
C:\Rtools\gcc-4.6.3\bin\gcc.exe -mcygwin -mdll -O -Wall -DWin32=1 -I.\rpy\rinterface -IC:\Python27\include -IC:\Python27\PC -IC:/PROGRA~1/R/R-215~1.2/include/i386 -IC:/PROGRA~1/R/R-215~1.2/include -c .\rpy\rinterface\_interface.c -o build\temp.win32-2.7\Release\.\rpy\rinterface\_rinterface.o
cc1.exe: error: unrecognized command line option '-mcygwin'
error: command 'gcc' failed with exit status 1

I also tried with build install and easy_install without success. I have R 2.15.2, Python 2.7.2 and Windows 7 (32 bit).

What am I doing wrong?

PS.if I paste that command, the result is:

cygwin warning:

MS-DOS style path detected C:\PROGRA~1\R\R-215~1.2\bin\config.sh
Preferred POSIX equivalent is: /cygdrive/c/PROGRA~1/R/R-215~1.2/bin/config.sh
CYGWIN environment variable option "nodosfilewarning" turns off this warning.
Consult the user's guide for more details about POSIX paths:
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames

-LC:/PROGRA~1/R/R-215~1.2/bin/i386 -lR

回答1:

OK. From previous experience I've found there are not many instructions on how to install rpy2 on Windows. I get that it's not officially supported but it's really not that hard. In a few steps I'll show what I did and maybe others can follow.

These instructions will most likely only work for Python 2.7+ and R 3.2+ but will probably work for R 3.0+. I am putting the paths that I've used on my system. Make sure to modify the paths accordingly:

First, make sure any previous rpy2 installations are UNINSTALLED before trying these steps (and obviously have R 3.2+ before installing).

Download the .whl file for r2py from here
Install the .whl file using pip install [put .whl filename here] (in the command line) from the directory where the file was downloaded
Append a path similar to C:\Program Files\R\R-3.2.0\bin to your PATH environment variable
Create a R_HOME system variable with a value similar to: C:\Program Files\R\R-3.2.0
Create a R_USER system variable with your user name
Create a R_LIBS_USER system variable with a path to the folder where external R packages are/will be installed.

That's it. Open up a command prompt and enter the command R. This should start an R session and display version information.

Now open up python and run this line to see if things worked out or not:

import rpy2.robjects as robjects

Hopefully this helps.

回答2:

I just successfully installed rpy2 on Windows 8.1 64bit with the binary installer from http://www.lfd.uci.edu/~gohlke/pythonlibs/#rpy2. It is usually much easier to just download a binary instead of trying to compile a package in Windows.

Also, you should set R_HOME environmental variable (in my case, to C:\Program Files\R\R-3.1.1) before you install the rpy2 binary. Otherwise you get RuntimeError: R_HOME not defined. error when you try to import rpy2. (thanks to R_HOME Error with rpy2)

Lastly, make sure to use %load_ext rpy2.ipython instead of %load_ext rmagic if you want to use it in IPython. It is one of the new features in rpy2 version 2.4.0.

(thanks to IPython notebook and rmagic/rpy2: cannot find module ri2py (OSX 10.8.5, python 2.7, R 3.1))

回答3:

I also generally had no success getting Rpy2 to work on Windows. After a few hours hacking around with R2.15 and Rpy2 from the pre-compiled binary 2.3.4.win-amd64-py2.7, I followed this question, and installed pyper instead. Maybe this will work for you until the support is there. I for one would love to see Rpy2 on Windows and IPython notebook (%load_ext rmagic), but I just couldn't spend any more time with it.

回答4:

EDIT Finally I managed to get it to work!!! See below:

I have been banging my head to get this to work and still haven't figured it out completely. What I have found out is that the error

'sh' is not recognized as an internal or external command, operable program or batch file

is caused by the absence of mingw and Rtools (and other unix like helper programs). (http://sourceforge.net/p/rpy/mailman/message/26549197/)

I went passed this stage by installing Rtools (http://cran.r-project.org/bin/windows/Rtools/) and mingw (http://sourceforge.net/projects/mingw-w64/) (But since the mingw-w64 project on sourceforge.net is moving to mingw-w64.org i suggest to use mingw-w64.org)

I went passed the R.exe CMD config --ldflags error but got stuck with

TypeError: object of type 'NoneType' has no len()

error. I am still searching for a solution!!

Hope this helps someone at some point.

UPDATE : So it seems that there are couple of problems associated with the installation. The setup.py is not able to find the correct version of R and the compilers have issues.

So, the way to proceed :

Download the source code from https://pypi.python.org/pypi/rpy2.
Update your environment variables - In the user variables
- PATH : append the path to ur R installation eg ;C:\Program Files\R\R-3.0.2\bin\x64
- R_HOME : a new variable with path to R: C:\Program Files\R\R-3.0.2
- R_USER : user user name eg john
Install Rtools (http://cran.r-project.org/bin/windows/Rtools/) and mingw (http://mingw-w64.org)
around line 123 before

return self._version I added self._version = [3, 0] to force the version to be 3.0 (may be someone can solve this better)
In the file unixccompiler.py either in python27/lib/distutils or in my case C:\Users(user_name)\AppData\Local\Continuum\Anaconda\Lib\distutils comment line 227

compiler = os.path.basename(sysconfig.get_config_var("CC")) with # (#compiler = os.path.basename(sysconfig.get_config_var("CC")))

and add line

compiler = 'gcc'

Some other things - use the command prompt cmd for installing. Use

python setup.py build install

Install the Rtools and mingw accepting all defaults. In Rtools select the

extra to build 64 bit R

and

edit the system PATH

Thats it!! Got it to work..

Hope this helps!!

回答5:

On Anaconda, you can install using:

conda install --channel https://conda.anaconda.org/Richarizardd rpy2

Alternativey, can be tried:

conda install -c r rpy2

One can also refer:

https://github.com/conda-forge/rpy2-feedstock

回答6:

The install script setup.py is telling that a problem was met when running

"C:\PROGRA~1\R\R-215~1.2\bin\R" CMD config --ldflags

Open a terminal, paste that command, check what the error is.

As you edited the question with the output the problem seems to be that while running that command as a subprocess from python setup.py install an empty string is returned while when running the command from a terminal there is an output. I am also reading from the output from the terminal that cygwin is involved. May be this is the problem ?

回答7:

I am not sure if anyone is still following the discussion but in any case, My aim in trying to get rpy2 to work was so to be able to get it working in my Ipython notebooks. If anyone else is trying to do the same, I would suggest using IRkernel which installs smoothly as a cake (well made cake). Here are the resources to get it done. I have used it and it works like a charm.

basically what you need to run is this:

install.packages(c('rzmq','repr','IRkernel','IRdisplay'),repos = c('http://irkernel.github.io/', getOption('repos')))

IRkernel::installspec()

Here are the resources if you find any troubles:

https://github.com/IRkernel/IRkernel

http://blog.revolutionanalytics.com/2015/09/using-r-with-jupyter-notebooks.html

http://www.michaelpacer.com/maths/r-kernel-for-ipython-notebook

HTH

回答8:

Following the answers above, this is what works for me

System: Win 7-64, Python 3.6,

1. Install R and packages you need

2. Set `R_HOME` and `R_USER`, as environment variable

R_HOME = D:\Program Files\R\R-3.4.1
R_USER = Administrator

The user name can be obtained by echo %username% in cmd

3. Download `rpy2` and install it

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

Check to its path, and install it in cmd like pip install rpy2-2.8.6-cp36-cp36m-win_amd64.whl

4. Create a notebook and see if it works

import rpy2.robjects as robjects

# test : evaluating R code
robjects.r('''
        # create a function `f`
        f <- function(r, verbose=FALSE) {
            if (verbose) {
                cat("I am calling f().\n")
            }
            2 * pi * r
        }
        # call the function `f` with argument value 3
        f(3)
        ''')

回答9:

Check out this install doc I made about this issue. https://www.academia.edu/12178754/rpy2Install

It's directory specific to an ArcGIS setup, but quick to port

来源：https://stackoverflow.com/questions/14882477/rpy2-install-on-windows-7

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