Re: [Pytables-users] Clear chunks from CArray

2013-08-06 Thread Giovanni Luca Ciampaglia
hi Anthony and Antonio, thanks for the explanations. I was hoping I could do it programmatically, but if it is an inherent limitation of HDF5 there is little I can do. Compression plus a sensible chunk size should help though. Best, Giovanni On 08/06/2013 04:11 AM,

Re: [Pytables-users] Clear chunks from CArray

2013-08-05 Thread Anthony Scopatz
Hello Giovanni, I think you may need to del that slice and then possibly repack. Hope this helps. Be Well Anthony On Mon, Aug 5, 2013 at 2:09 PM, Giovanni Luca Ciampaglia glciamp...@gmail.com wrote: Hello all, is there a way to clear out a chunk from a CArray? I noticed that setting the

Re: [Pytables-users] Clear chunks from CArray

2013-08-05 Thread Giovanni Luca Ciampaglia
Hi Anthony, what do you mean precisely? I tried del ca[:,:] but CArray does not support __delitem__. Looking in the documentation I could only find a method called remove_rows, but it's in Table, not CArray. Maybe I am missing something? Thank, Giovanni On Mon 05 Aug 2013 03:43:42 PM EDT,

Re: [Pytables-users] Clear chunks from CArray

2013-08-05 Thread Anthony Scopatz
On Mon, Aug 5, 2013 at 3:14 PM, Giovanni Luca Ciampaglia glciamp...@gmail.com wrote: Hi Anthony, what do you mean precisely? I tried del ca[:,:] but CArray does not support __delitem__. Looking in the documentation I could only find a method called remove_rows, but it's in Table, not