Operating on Windows 7 64bit with Python version 2.7.9, I have successfully installed R-3.2.0. Despite trying previous versions such as R-2.12.2 and R-3.1.3, the result remains the same. To ensure compatibility, I added
C:\Program Files\R\R-3.2.0\bin\i386C:\Program Files\R\R-3.2.0, allocated R_USER with the name "Matt", and installed rpy2-2.3.0dev through a .exe file which was successfully installed.
However, upon attempting to import from rpy2 import robjects, an error in rpy2\rinterface\__init__.py emerges:
Traceback (most recent call last):
File "C:\Python27\rpy2Test.py", line 2, in <module>
from rpy2 import robjects
File "C:\Python27\lib\site-packages\rpy2\robjects\__init__.py", line 14, in <module>
import rpy2.rinterface as rinterface
File "C:\Python27\lib\site-packages\rpy2\rinterface\__init__.py", line 79, 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-3.2.0
Various attempts have been made to rectify the situation, including:
if os.path.exists(os.path.join(R_HOME, 'lib')):
os.environ['PATH'] += ';' + os.path.join(R_HOME, 'bin')
os.environ['PATH'] += ';' + os.path.join(R_HOME, 'modules')
os.environ['PATH'] += ';' + os.path.join(R_HOME, 'lib')
else:
os.environ['PATH'] += ';' + os.path.join(R_HOME, 'bin', 'i386')
os.environ['PATH'] += ';' + os.path.join(R_HOME, 'modules', 'i386')
os.environ['PATH'] += ';' + os.path.join(R_HOME, 'library')
# Load the R dll using the explicit path
Rlib = os.path.join(R_HOME, 'bin', 'R.dll')
if not os.path.exists(Rlib):
Rlib = os.path.join(R_HOME, 'bin', 'i386', 'R.dll')
Even after inserting the code snippet into rinterface\__init__.py, there was no difference in outcome. Additionally, transferring all contents from the bin\i386 folder to the bin folder failed to yield results.
The question still stands: How can rpy2 be configured to locate r.dll?