我一直在尝试让Rpy2与我的R安装良好配合,但一直存在问题。我首先尝试安装rpy2 MSI软件包,但似乎并没有成功。当我运行推荐的测试时,出现了一个错误,说找不到R.dll,因为新的R安装(2.11之后)将DLL文件安装到i386文件夹中,而rpy2无法在bin文件夹中找到它们,因为它正在查找bin/i386文件夹。
这真的很奇怪,因为(任何人都可以在他们自己的安装中检查)R将R.dll安装到“C:\Program Files\R\R-2.12.1\bin\i386”中,我已经检查并验证了它是否存在,并且我已经将rpy2指向了Windows默认路径中的此目录!我确切知道rpy2正在查找正确的位置,但无法理解为什么它看不到R.dll。
那么为什么rpy2找不到它呢?有没有人知道如何让rpy2与R 2.12一起工作?也许我应该尝试更新的rpy2 2.2.0版本?尽管它仍在开发中,但根据这个网站,1.9应该能够处理R 2.12,所以我不知道该怎么办...
感谢任何能帮忙的人...
[编辑]我也尝试了这里的这些说明,但它们返回相同的“找不到DLL”错误...除非你将环境变量“R_home”更改为直接指向c/program files/R/R 2.12目录而不是进入i386子目录。
如果它指向正确的位置,你会得到这些错误反馈。这看起来更有希望...但仍然很糟糕!
然后我尝试使用python自带的命令行工具(distutils)从头构建安装程序。但这并没有成功,因为setup.py声称无法找到R_home位置。但我发现编辑环境变量(PATH)可能会向rpy2设置显示R安装位置。然后我对环境进行了几处编辑,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,指向同一位置。
不幸的是,当它找到R路径时,我遇到了以下问题:
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
所以我又尝试使用预制安装,以为新的环境编辑可能有用,但遇到了这个问题
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(任何人都可以在他们自己的安装中检查)R将R.dll安装到“C:\Program Files\R\R-2.12.1\bin\i386”中,我已经检查并验证了它是否存在,并且我已经将rpy2指向了Windows默认路径中的此目录!我确切知道rpy2正在查找正确的位置,但无法理解为什么它看不到R.dll。
那么为什么rpy2找不到它呢?有没有人知道如何让rpy2与R 2.12一起工作?也许我应该尝试更新的rpy2 2.2.0版本?尽管它仍在开发中,但根据这个网站,1.9应该能够处理R 2.12,所以我不知道该怎么办...
感谢任何能帮忙的人...
[编辑]我也尝试了这里的这些说明,但它们返回相同的“找不到DLL”错误...除非你将环境变量“R_home”更改为直接指向c/program files/R/R 2.12目录而不是进入i386子目录。
如果它指向正确的位置,你会得到这些错误反馈。这看起来更有希望...但仍然很糟糕!
.......................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