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, pytables-users-requ...@lis
Hi Antonio,
Now that you mention it I think that you are right that there is no way to
remove a chunk from an existing data set. If you think about this it makes
a lot of sense since you would have to alter the B-tree in strange and
unfortunate way. So HDF5 doesn't even try. However, you can fa
Hi Anthony, hi Giovanni,
Il giorno 06/ago/2013, alle ore 00:45, Anthony Scopatz ha
scritto:
>
> On Mon, Aug 5, 2013 at 3:14 PM, Giovanni Luca Ciampaglia
> wrote:
> Hi Anthony,
>
> what do you mean precisely? I tried
>
> del ca[:,:]
>
> but CArray does not support __delitem__. Looking in t
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 Tab
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,
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
Hello all,
is there a way to clear out a chunk from a CArray? I noticed that setting the
data to zero actually takes disk space, i.e.
***
from tables import open_file, BoolAtom
h5f = open_file('test.h5', 'w')
ca = h5f.create_carray(h5f.root, 'carray', BoolAtom(), shape=(1000,1000),
chunkshape=
