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Hi I just download rpy2 and Python 2.6. When I try to run some of example code I found on the internet, I got this error. Can anyone explain why this is happening and how can I fix it? Thanks.

import rpy2.robjects as RO Traceback (most recent call last): File "<pyshell#0>", line 1, in <module> import rpy2.robjects as RO 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 22, in <module> "This might be because R.exe is nowhere in your Path.") RuntimeError: Unable to determine R version from the registery.Calling the command 'R RHOME' does not return anything. This might be because R.exe is nowhere in your Path.
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This might be because R.exe is nowhere in your Path

This sounds like a big clue. Check the value of %PATH% in your Windows environment. I'd expect this to contain the location of R.EXE (probably something like C:\Programs\R\R-2.8.0\bin).

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This page describes how to set the path: computerhope.com/issues/ch000549.htm

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