Fixed in the source repository. Will definitely be in 2.1.2.
L. On 30/04/10 09:57, Laurent wrote: > On 21/04/10 22:30, Christian Marquardt wrote: >> Hi, >> >> once more my apologies if I'm missing the obvious... >> >> The rpy2 documentation at >> http://rpy.sourceforge.net/rpy2/doc-2.1/html/numpy.html#high-level-interface >> >> states that the import of the numpy2ri module "alone is sufficient to >> switch an automatic conversion of numpy objects into rpy2 objects." >> Based on that, I would have expected that something like >> >> import numpy as np >> import rpy2.robjects.numpy2ri >> import rpy2.robjects as ro >> >> x = np.arange(-10., 10., 0.1) >> >> ro.globalenv["x"] = x >> >> works well. However, it generates the following error: >> >> File "numpy_1.py", line 7, in<module> >> ro.globalenv["x"] = x >> File "/opt/apps/lib/python2.5/site-packages/rpy2/robjects/__init__.py", >> line 166, in __setitem__ >> robj = conversion.py2ro(value) >> File "/opt/apps/lib/python2.5/site-packages/rpy2/robjects/__init__.py", >> line 143, in default_py2ro >> res = default_py2ri(o) >> File "/opt/apps/lib/python2.5/site-packages/rpy2/robjects/__init__.py", >> line 132, in default_py2ri >> raise(ValueError("Nothing can be done for the type %s at the >> moment." %(type(o)))) >> ValueError: Nothing can be done for the type<type 'numpy.ndarray'> at >> the moment. >> >> It's of course straightforward to cast the numpy array explicitly with >> >> ro.globalenv["x"] = ro.FloatVector(x) >> >> but why is this necessary? Wouldn' numpy2ri.py also need an >> inplementation of py2ro which makes sure that calls of >> conversion.py2ro are routed through the numpy aware version of py2ri? > > Yes this is a problem, particularly since the following is already working: > > >>> ro.conversion.py2ri(x) > <Array - Python:0xa66b7cc / R:0xb016030> > > Thanks for the report, this is in fact leading to a more serious bug. > Currently, robjects.Environment is in fact probably insensitive to any > redefinition of conversion.py2ri. > > I filed a bug report > https://bitbucket.org/lgautier/rpy2/issue/41/environment__setitem__-and-conversionpy2ri > > Hopefully this will be fixed for 2.1.2. > > > Laurent > > > > >> Many thanks, >> >> Christian. >> >> ------------------------------------------------------------------------------ >> >> _______________________________________________ >> rpy-list mailing list >> rpy-list@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/rpy-list > ------------------------------------------------------------------------------ _______________________________________________ rpy-list mailing list rpy-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rpy-list
