dragan savic (el 2008-03-11 a les 15:27:45 -0700) va dir:: > I did put the "string" and now I get the following > error: > > File > "C:\Python24\Lib\site-packages\tables\description.py", > line 169, in from_ > type > newatom = atom.Atom.from_type(type, shape, dflt) > File "C:\Python24\lib\site-packages\tables\atom.py", > line 451, in from_type > return class_.from_kind(kind, itemsize, shape, > dflt) > File "C:\Python24\lib\site-packages\tables\atom.py", > line 500, in from_kind > raise ValueError( "no default item size for kind > ``%s``" > ValueError: no default item size for kind ``string`` > Closing remaining open files: TABLE_2_0_TEST.h5... > done > > I see now why it works for other types except the > "string". Maybe this could be fixed by adding the > itemsize along the string keyword like "string10". But > then so should function split_type be modified...
The string kind doesn't use the ``kindN`` type notation because we found
it potentially confusing (e.g. ``string10`` is an -invalid- string of 10
bits, not 10 characters, which would be ``string80``), so you need to
specify kind and item size separately. Also, there is no default item
size for the string kind, so you *must* give it explicitly. For that
matter, you can use the ``from_kind()`` factory method like this:
>>> tables.Atom.from_kind('string', 10)
StringAtom(itemsize=10, shape=(), dflt='')
See the Appendix A of the Users' Guide for more details.
HTH,
::
Ivan Vilata i Balaguer >qo< http://www.carabos.com/
Cárabos Coop. V. V V Enjoy Data
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