如何将R_HOME环境变量设置为R home目录?

I am trying to import rpy2 into python and I am getting this error:

我正在尝试将rpy2导入到python中，我得到了这个错误:

RuntimeError: The R home directory could not be determined.
Try to install R <https://www.r-project.org/>,
set the R_HOME environment variable to the R home directory, or
add the directory of the R interpreter to the PATH environment variable.

I am completely lost here as I have no idea what this is telling me. I tried to search up how to set the environment variable and couldn't find anything detailed enough that was helpful for me. I would appreciate it if the answer could be very straightforward as I am just a newbie. I am running OSX 10.11.

我完全迷失在这里，因为我不知道这告诉我什么。我试图查找如何设置环境变量，但找不到任何对我有帮助的细节。如果我是个新手，我希望答案能很简单。我正在运行OSX 10.11。

Thank you (my first post, I apologize if I overlooked any rules in posting)

谢谢你(我的第一个帖子，如果我在发帖时忽略了任何规则，我向你道歉)

2 个解决方案

#1

It is the other way around -- the R in your PATH should know its home:

相反，在你的道路上，R应该知道它的家:

edd@don:~$ R RHOME
/usr/lib/R
edd@don:~$

This echos the last line recommendation -- have your R in the PATH.

这是最后一行的推荐——让你的R在路径中。

On another machine with both R and R-devel, I choose to address the latter under a different name. Still, each knows its HOME:

在另一台同时使用R和R-devel的机器上，我选择使用不同的名称来处理后者。然而，每个人都知道自己的家:

edd@max:~$ /usr/local/lib/R-devel/bin/R RHOME
/usr/local/lib/R-devel/lib/R
edd@max:~$ R RHOME
/usr/lib/R
edd@max:~$

#2

Setting R_HOME this way worked for me

这样设置R_HOME对我来说很有用

import os
os.environ['R_HOME'] = '/path/to/R'

#1