Re: [Pytables-users] Questionnaire

[Ashley W. <ash...@sy...>]

On 30/11/2004, at 4:16 AM, Francesc Altet wrote:

> Hi List,
>
> Now that PyTables has passed its second birthday, we need your =
feedback
> again. So, please, if you are using PyTables and like this effort to =
be
> continued and improved, take some time to respond to this
> questionnaire; it will help us to decide what to do in the next few
> months.
>
> Following are our plans for the next few months, before releasing the
> 1.0 version. Could you respond to these questions by giving a
> punctuation ranging from +5 (I absolutely need that) to 0 (I can pass
> without this) to these planned features?
>
> - Implement support for Variable Length values in Table columns (most
>   likely implemented in a brand-new object called VLTables).

+2, interesting

> - Implement relationships (apart from the existing hierarchical ones)
>   between objects in the object tree (kind of symbolic links on a
>   filesystems), and pointers to dataset regions.

+2, interesting

> - Implement date support in Leaf objects (specially on Tables).

+5, tables with a time column are our stock in trade.

> - Full index-based searches in Tables (right now, you can only set one
>   condition in index-accelerated searches).

+3, useful, but I haven't done enough searching to know how useful yet.

> - Image support (in the sense stated in
>   http://hdf.ncsa.uiuc.edu/HDF5/doc/ADGuide/ImageSpec.html).

0, haven't stored an image yet

> Now, answer the next questions. If you don't like to respond all of=20
> them,
> this is not necessary.
>
> - What feature do you like more (not necessarily listed before)?

CSTables ;)  Or more to the point to ability to have one write-access=20
point, but easy read-access from other processes.

> - What feature do you miss more (not necessarily listed before)?
>
> - Do you prefer seeing PyTables to become (even) faster or less memory
>   demanding?

Both?

> - Which present limitations do you find more annoying?
>
> - In which field of engineering, science or business are you using
>   PyTables?

Engineering operations management.  Process analysis and optimisation. =20=

Reports for operators and engineers.

> Ok, that's all. I hope some of you will take some of his precious time
> to fill-up the questionnaire. Even only one answer would be much
> better than our sole opinion!.
>
> Thanks,
>
> --=20
> Francesc Altet
> Who's your data daddy? =A0PyTables


Thank you.

Ashley Walsh



PS sourceforge is down at the moment or I'd put this in as a bug.

Table.iterrows() should probably return an empty iterator (eg  "return=20=

iter([])" ) for the case when start >=3D stop.  Returning an empty=20
RecArray raises a TypeError for:

   iter(table)

because iter() expects an iterator to be returned by table.__iter__