Re: [Numpy-discussion] Misc Pyrex questions

2007-01-23 Thread Francesc Altet
Oops, the attachments! (always the same history) El dt 23 de 01 del 2007 a les 20:33 +0100, en/na Francesc Altet va escriure: > El 2007-01-22 23:59:03 GMT, en/na Pierre GM va escriure: > > Other example: what's more efficient ? > > myvar = numpy.empty(shape,dtype) > > or > > myvar = PyArray_EMPTY

Re: [Numpy-discussion] Misc Pyrex questions

2007-01-23 Thread Francesc Altet
El 2007-01-22 23:59:03 GMT, en/na Pierre GM va escriure: > Other example: what's more efficient ? > myvar = numpy.empty(shape,dtype) > or > myvar = PyArray_EMPTY(dims, NPY_TYPE) Ok. The second one indeed, but possibly less than you realize (just a 25%, see some benchmarks below). The main point i

Re: [Numpy-discussion] Misc Pyrex questions

2007-01-22 Thread Pierre GM
On Monday 22 January 2007 11:18, Francesc Altet wrote: > You should first inform to Pyrex about the definition of ndarray. For > this, it's only necessary to declare this in a file (say > definitions.pxd): > from now on, Pyrex knows about the ndarray object and you should be able > to derive a cla

Re: [Numpy-discussion] Misc Pyrex questions

2007-01-22 Thread Francesc Altet
El dl 22 de 01 del 2007 a les 10:07 -0500, en/na Pierre GM va escriure: > Dear All, > I started playing with Pyrex this week-end, to see how easy it would be to > port some subclasses to C. A good thing is that it's not as bad as I was > dreading. I do have a lot of question, however: > > - Can

[Numpy-discussion] Misc Pyrex questions

2007-01-22 Thread Pierre GM
Dear All, I started playing with Pyrex this week-end, to see how easy it would be to port some subclasses to C. A good thing is that it's not as bad as I was dreading. I do have a lot of question, however: - Can I create a subclass w/ Pyrex ? If yes, how ? I haven't been able to find any exampl