A Tuesday 06 January 2009, Timmie escrigué: > Hello, > is it possible to add data to an existing hd5-file with pytables? > I tried it and my original data got finally overwritten. > > Is there a minimal example for this?
Well, you should use the .append() method of appendable objects (EArray, VLArray and Table) in order to do what you want. What exactly are you trying now? > What python tools are recommended to convert hdf5 tables to > ascii/csv? In general, it is best to retrieve NumPy objects out of PyTables ones, and then use the NumPy/Python output capabilities to generate the desired ascii/csv files. If in doubt, ask the NumPy list for how to do this efficiently (I've read that they are working on improved methods for output arrays in different ascii formats). Also, if the hdf5 tables are too large to be kept in memory, then you may want use the table iterators provided by PyTables. See: http://www.pytables.org/docs/manual/ch04.html#TableMethods_reading for more info on the different read methods/iterators available. Hope that helps, -- Francesc Alted ------------------------------------------------------------------------------ Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB _______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
