On 2/14/10 9:14 AM, Laurent Gautier wrote: > On 2/14/10 7:57 AM, Nathaniel Smith wrote: >> On Sat, Feb 13, 2010 at 9:55 PM, Laurent Gautier<lgaut...@gmail.com> >> wrote: >>> Hi, >>> >>> rpy2-2.1.x will be dropping the "__array_struct__" way to export array >>> information from R arrays to numpy arrays, and use instead the new >>> buffer protocol in Python. >>> >>> This likely means that all numpy-related features in rpy2 will only be >>> supported with Python>= 2.6 and numpy>= 1.3, but this also means that >>> wizardry like "views" on vectors and arrays (that is an object is a >>> "view" on larger array or vector, without a copy of the subset of data >>> made) is getting possible. >> >> No objection to this, but views work just fine with the old >> __array_struct__ way too, so I find your description confusing :-). > > __array_struct__ is currently used to inform numpy about the structure > of a given R vector/array (that is length, type, number of dimensions, > etc...). > > This is going away by having R vectors/arrays exposed through rpy2 > implement the buffer protocol. Recent numpy version know how to find the > information they need (and used to obtain through __array_struct__ there). > > [There is certainly the possibility to leave __array_struct__ as an > unsupported deprecated feature if someone requests it]. >
Well well... it looks like this is going to be the other way around: __array_struct__ is going to stay for 2.1, while the buffer thing will be an shiny experimental feature. (I just realized that I was basing my comments from a fresh snapshot of the numpy trunk). L. PS: I just fixed an issue with endianness and __array_struct__ in rpy2. I do not know for how it has been there... strange that nobody reported it. ------------------------------------------------------------------------------ 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
