From: Francesc A. <fa...@op...> - 2003-05-16 11:28:25
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A Divendres 16 Maig 2003 12:58, v=E0reu escriure: > > For images I think that a far better solution would be to use Array > > objects. > > If you need to save a lot of images, a group can host up to 4096 of > > such > > objects, but you can use more groups if you need them. Arrays are not > > enlargeable right now, but for images this is not a problem. > > This looks good, > I suppose I should check if there is a limit to the number of groups > as well > Cheers > Ed Yes, there is also a limit. In general, you can hang up to 4096 objects f= rom a group, and that includes datasets as well as other groups. There is als= o a limitation on how deep can go the tree, which is 512 levels right now (it can't go much beyond 1000 because of limits on recursive deepness in Python). By making your tree wider and deeper, you can in fact save a rea= lly *huge* number of objects on it, but be careful, because groups (datasets also, but much less) takes memory (the metainformation), so, if the tree = is reasonably balanced, the limit is mainly imposed by the available memory = on your system, not because of PyTables limitations. Cheers, --=20 Francesc Alted |