Bizzarre试图让Rpy2 2.1.9与R 2.12.1一起使用,在Windows XP下使用Python 2.6 - Rpy无法找到R.dll吗？

Question

我一直有一个真正的问题,试图让我的R安装让Rpy2玩得很好.我首先尝试安装rpy2 MSI软件包,但这似乎不起作用.当我运行推荐的测试时,它给了我一个错误,说它无法找到R.dll,因为新的R安装(后2.11)将DLL安装到i386文件夹中,其中rpy2找不到它们,因为它在bin文件夹而不是bin/i386文件夹中查找.

然后我尝试使用python附带的命令行工具(distutils)从头开始构建安装.这不起作用,因为setup.py声称无法找到R_home位置.但我确实编辑了一个环境变量(PATH)可能会显示rpy2设置在哪里找到R安装.然后我对环境进行了一些编辑,添加了指向bin/i386目录的"R_home"变量,并在PATH变量下创建了一个新条目,指向同一个点.

不幸的是,当它找到R路径时,我得到了这个问题:

running build
running build_py
running build_ext
Traceback (most recent call last):
  File "setup.py", line 372, in <module>
    [os.path.join('doc', 'source', 'rpy2_logo.png')])]
  File "C:\Python26\lib\distutils\core.py", line 152, in setup
    dist.run_commands()
  File "C:\Python26\lib\distutils\dist.py", line 975, in run_commands
    self.run_command(cmd)
  File "C:\Python26\lib\distutils\dist.py", line 995, in run_command
    cmd_obj.run()
  File "C:\Python26\lib\distutils\command\build.py", line 134, in run
    self.run_command(cmd_name)
  File "C:\Python26\lib\distutils\cmd.py", line 333, in run_command
    self.distribution.run_command(command)
  File "C:\Python26\lib\distutils\dist.py", line 994, in run_command
    cmd_obj.ensure_finalized()
  File "C:\Python26\lib\distutils\cmd.py", line 117, in ensure_finalized
    self.finalize_options()
  File "setup.py", line 111, in finalize_options
    config += get_rconfig(r_home, about)
  File "setup.py", line 264, in get_rconfig
    rc = RConfig.from_string(rconfig)
  File "setup.py", line 252, in from_string
    + '\nin string\n' + string)
ValueError: Invalid substring in string

所以我回去尝试使用premade安装,认为可能对环境的新编辑可能有效,但是这里遇到了这个问题

 Traceback (most recent call last):
      File "<string>", line 245, in run_nodebug
      File "C:\Documents and Settings\User\Desktop\rpy2-2.1.9\rpy\tests.py", line 3, in <module>
        import rpy2.robjects.tests
      File "C:\Python26\lib\site-packages\rpy2\robjects\__init__.py", line 12, in <module>
        import rpy2.rinterface as rinterface
      File "C:\Python26\lib\site-packages\rpy2\rinterface\__init__.py", line 56, in <module>
        raise RuntimeError("Unable to locate R.dll within %s" % R_HOME)
    RuntimeError: Unable to locate R.dll within C:\Program Files\R\R-2.12.1\bin\i386

这真的很奇怪,因为(因为任何人都可以检查他们自己的安装)R将R.dll安装到"C:\ Program Files\R\R-2.12.1\bin\i386"并且我已经检查并验证了它的在那里,我已经将rpy2指向Windows默认路径中的这个目录!我知道rpy2正在寻找正确的地方,但无法理解为什么它没有看到R.dll.

那么为什么rpy2找不到呢？有没有人知道让rpy2与R 2.12一起工作的方法？也许我应该尝试更新的rpy2 2.2.0版本？它仍然在开发中,1.9应该能够根据这个网站处理R 2.12,所以我不知道该做什么...

感谢任何可以提供帮助的人...

[编辑]我也尝试过这些说明在这里,但他们返回相同的"找不到DLL"错误...除非更改环境变量"R_HOME",以在C /程序文件/ R/R直点2.12目录而不是进入i386子目录.

如果它指向正确的位置,则会收到这些错误.这看起来更有希望......但它仍然非常糟糕!

.......................F....................................F.FFF...F....................................................................F..................................
======================================================================
FAIL: testNewWithoutInit (rpy2.rinterface.tests.test_SexpVector.SexpVectorTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Python26\lib\site-packages\rpy2\rinterface\tests\test_SexpVector.py", line 43, in testNewWithoutInit
    self.assertTrue(False) # worked when tested, but calling endEmbeddedR causes trouble
AssertionError

======================================================================
FAIL: testCallErrorWhenEndedR (rpy2.rinterface.tests.test_EmbeddedR.EmbeddedRTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Python26\lib\site-packages\rpy2\rinterface\tests\test_EmbeddedR.py", line 122, in testCallErrorWhenEndedR
    self.assertTrue(False) # worked when tested, but calling endEmbeddedR causes trouble
AssertionError

======================================================================
FAIL: testReadConsoleWithError (rpy2.rinterface.tests.test_EmbeddedR.EmbeddedRTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Python26\lib\site-packages\rpy2\rinterface\tests\test_EmbeddedR.py", line 117, in testReadConsoleWithError
    self.assertTrue(errorstring.startswith('Traceback'))
AssertionError

======================================================================
FAIL: testSetReadConsole (rpy2.rinterface.tests.test_EmbeddedR.EmbeddedRTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Python26\lib\site-packages\rpy2\rinterface\tests\test_EmbeddedR.py", line 97, in testSetReadConsole
    self.assertEquals(yes.strip(), res[0])
AssertionError: 'yes' != ''

======================================================================
FAIL: testSetWriteConsole (rpy2.rinterface.tests.test_EmbeddedR.EmbeddedRTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Python26\lib\site-packages\rpy2\rinterface\tests\test_EmbeddedR.py", line 36, in testSetWriteConsole
    self.assertEquals('[1] "3"\n', str.join('', buf))
AssertionError: '[1] "3"\n' != ''

======================================================================
FAIL: testWriteConsoleWithError (rpy2.rinterface.tests.test_EmbeddedR.EmbeddedRTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Python26\lib\site-packages\rpy2\rinterface\tests\test_EmbeddedR.py", line 55, in testWriteConsoleWithError
    self.assertTrue(errorstring.startswith('Traceback'))
AssertionError

======================================================================
FAIL: testVectorUnicodeCharacter (rpy2.robjects.tests.testNumpyConversions.NumpyConversionsTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Python26\lib\site-packages\rpy2\robjects\tests\testNumpyConversions.py", line 54, in testVectorUnicodeCharacter
    self.assertTrue(False) # arrays of unicode characters causing segfault
AssertionError

----------------------------------------------------------------------
Ran 172 tests in 0.407s

FAILED (failures=7)
Exit code:  True

Answer 1

经过几个小时的网上搜索并尝试了许多不同的东西,其中包括遇到上述相同的问题,我终于让Rpy2在我的Windows 7电脑上运行了!

基本上,关键的帮助来自这个主题:http://www.mail-archive.com/rpy-list@lists.sourceforge.net/msg03348.html.

总结一下,这些是在Windows7上启动并运行rpy2的步骤:

1. 从以下链接安装rpy2:https://bitbucket.org/breisfeld/rpy2_w32_fix/issue/1/binary-installer-for-win32
2. 将R.dll的路径添加到环境变量PATH(在我的情况下为C:\ Program Files\R\R-2.12.1\bin\i386)
3. 添加一个环境变量R_HOME(在我的例子中为C:\ Program Files\R\R-2.12.1)
4. 添加一个环境变量R_USER(在Windows中只是我的用户名)
5. 重新启动Python IDE(否则不会重新加载环境变量!)

Answer 2

RPy2 未在 Windows 上进行测试。您可以尝试将旧版本(2.0.8) 与 Windows 安装程序一起使用，但对于较新版本的 R 可能会出现问题。

作者不使用Windows。如果您掌握了在 Windows 上运行更新版本的知识，我相信他会欢迎您的贡献。