On 2/14/10 8:06 PM, Nathaniel Smith wrote: > On Sun, Feb 14, 2010 at 12:14 AM, Laurent Gautier<lgaut...@gmail.com> wrote: >>> Can you elaborate on what cool new features we'll see as a result of >>> this? >> >> By exporting the buffer protocol, all Python tools that make use of (so >> obviously numpy among them) will be able to access efficiently the data in R >> vectors/arrays. >> >> In other terms, that means that C-level code can be implemented to do >> perform operation on either array.array, numpy.ndarray, >> rpy2.rinterface.SexpVector (and by inheritance rpy2.robjects.IntVector, >> rpy2.robjects.FloatVector, ...). For example, python-opencl is able to >> create memory buffers on the (graphical) device from numpy arrays, or from >> any other object implementing the buffer protocol. >> >> This means being able to inter-exchange array, numpy, rpy2, or anything else >> implementing the buffer protocol without having formal dependencies between >> packages. > [...] >> Also, the memory views (new in Python 3) provide an API to create >> vector/arrays that are "views" on an underlying larger object without >> copying them. > > Ah, okay, so the practical advantage is that there are non-numpy > consumers of the buffer interface starting to pop up, so the advantage > is that rpy2 will interoperate with them too, without having to create > a numpy array in between? That makes sense, and is good to know; > thanks.
Yes... or in a sense that's the numpy interface that is being moved to core Python, becoming the 'linga franca' for numerical structures. I read some more and the new buffers may still have limited capabilities; memoryviews (Python 3, backported to Python 2.7) is touted as THE thing. > -- Nathaniel ------------------------------------------------------------------------------ SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev _______________________________________________ rpy-list mailing list rpy-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rpy-list
