Re: [Numpy-discussion] saving incrementally numpy arrays

2009-08-12 Thread Juan Fiol
Thanks David, I'll look into it now. Regarding the allocation/deallocation times I think that is not an issue for me. The chunks are generated by a fortran routine that takes several minutes to run (I am collecting a few thousand points before saving to disk). They are approximately the same siz

Re: [Numpy-discussion] saving incrementally numpy arrays

2009-08-12 Thread Juan Fiol
Hi, I finally decided by the pytables approach because will be easier later to work with the data. Now, I know is not the right place but may be I can get some quick pointers. I've calculated a numpy array of about 20 columns and a few thousands rows at each time. I'd like to append all the rows

Re: [Numpy-discussion] saving incrementally numpy arrays

2009-08-11 Thread Juan Fiol
= np.load(fi) y1 = np.load(fi) fi.close() #- --- On Tue, 8/11/09, Juan Fiol wrote: > From: Juan Fiol > Subject: Re: [Numpy-discussion] saving incrementally numpy arrays > To: "Discussion of Numerical Python" > Date: Tuesday, August 11, 2009, 8:28 PM > Hi, th

Re: [Numpy-discussion] saving incrementally numpy arrays

2009-08-11 Thread Juan Fiol
11:05 AM, > Robert Kern > wrote: > > On Mon, Aug 10, 2009 at 22:29, Juan Fiol > wrote: > >> Hi, I am creating numpy arrays in chunks and I > want to save the chunks while my program creates them. I > tried to use numpy.save but it failed (because it is not > intend

[Numpy-discussion] saving incrementally numpy arrays

2009-08-10 Thread Juan Fiol
Hi, I am creating numpy arrays in chunks and I want to save the chunks while my program creates them. I tried to use numpy.save but it failed (because it is not intended to append data). I'd like to know what is, in your opinion, the best way to go. I will put a few thousands every time but buil