>> Finally, I would also suggest to extend the implementation of >> createTable such that the description paramer can also accept a >> np.dtype instance. Personally, I append to a table in chunks of, say >> 1MB to keep down memory usage (I may have 1GB in a single table), and >> here I prefer to first define the table, and then append data (seems >> like the cleanest thing to do), so I therefore first use >> >> h5file.createTable(...,description=np.empty(0, dtype=my_dtype), ...) >> >> to define the table based on a dtype, which seems kinda awkward as >> inside this method you are extracting the dtype from array. Having the >> possibility to do >> >> h5file.createTable(...,description=my_dtype, ...) >> >> seems more intuitive for me. > > Ok. Note taken. The reason why `Table.createTable` is not accepting a NumPy > dtype as the description for creating a Table is mainly historical: when > PyTables was created back in 2002 it was based in numarray, that had not the > notion of a structured type as a such (although they were supported > indirectly). When NumPy (stable) appeared in late 2006, the structured dtype > was introduced, but we have not supported it in the `Table.createTable` yet > mainly because the PyTables way was independent of the underlying numerical > package. But now that it seems clear that NumPy is here for stay I think it > is a good idea to implement support for it. Will try to do this for > forthcoming 2.2
Wow, I m glad you are taking my suggestion on-board. Definatelt in the nice-to-have category but should also be fairly simple to implement, I guess. > >> >> Finally, this should not be considered as a rant, just some >> observations from a new user. > > Indeed. Thanks for your feedback; it is very important for us. > OK. Glad that is your attitude. >> My general impression is that the "product" is well very polished and >> stable, the user's guide is well-written and the package is very, very >> nice (it is an answer to my praisers and the end of a long frustrating >> search for a package which could need my needs). > > Wow, looks like a good quote for: > > http://pytables.org/moin/UserQuotes > > :) Would you mind me adding it there? > Ahhmm.. I'm am still very, very new to PyTables, and I think the statement very well represents the thrill you have when you suddenly understand something and its usefulness. Perhaps, when I get further in my experience with PyTables? Then I could perhaps also reveal something about my application...? (I'll have to discuss that with management though) >> As mentioned in another post, there is an issue with installing LZO >> for windows users and other details, but overall very good. > > I'll see what can be done about this and come back with a solution. > Thanks. Any help to surmount that barrier would be appreciated. Cheers, Kim ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
