问题
I am trying to install rpy2 and I am facing a common issue. Unfortunately all the solution I have found are for win7
I have installed a Python 2.7 and R 2.15. then I write on the terminal
easy_install rpy2
or, alternatively
pip install rpy2
Same result:
Tried to guess R's HOME but no R command in the PATH
What I should do?
回答1:
Make sure you have R installed
brew install r
Then install rpy
pip install rpy2
回答2:
The rpy2 code is doing the wrong check. R might be perfectly fine, but rpy2 is using an unreliable check.
To check for R, the rpy2 uses subprocess.check_output. However, that was introduced (AFAIK) in python 2.7.
If you're using a version of python less than 2.7 then you should update to at least 2.7.
If you must use python 2.6, then you should look at this answer to see how to force subprocess.check_output into python 2.6, finally allowed you to install rpy2. This is what I had to do as I was unable to update the version of python.
Download the rpy2 code, and edit its setup.py and insert the code from that answer.
回答3:
I had the same problem (on a Mac) and none of the solutions I found online worked. The only thing that worked for me was:
conda update python
pip install rpy2
回答4:
- use
easy_install rpy2and it works just fine.
http://rpy.sourceforge.net/rpy2/doc-2.2/html/overview.html#download
Make sure you have setuptools installed.
If you do not know how to do that, check this link
You can just run ez_setup.py and let it decide for you.
Add C:\Program Files\R\R-2.12.1\bin\i386 (the path to R.dll) to the environment variable PATH
Add an environment variable R_HOME with C:\Program Files\R\R-2.12.1
Add an environment variable R_USER with your Windows username
回答5:
Installation worked for me when I did
pip install rpy2
but not when I did
sudo pip install rpy2
So in case you were using sudo and not mentioning it, this might help you. I also tried manually installing from source, which worked when I used just 'python setup.py install' for the install step, but not with sudo!
I did this on CentOS 7 with Python 2.7 and R 3.2 (as the root user). On sudo's behavior, see this question.
来源：https://stackoverflow.com/questions/20202757/tried-to-guess-rs-home-but-no-r-command-in-the-path-osx-10-6