[SciPy-User] Proposal for a new data analysis toolbox

Christopher Barker Chris.Barker@noaa....
Wed Nov 24 11:50:04 CST 2010

On 11/24/10 9:30 AM, Dag Sverre Seljebotn wrote:
> For the time being, for something like this I'd definitely go with a
> template language to generate Cython code if you are not already.


I've thought for years that one way to really help numpy performance is 
an easier way to write C extensions for numpy arrays. If it's easy 
enough, folks will write what may well be special-case code, but if the 
common cases are covered, we'll get some pretty good performance benefits.

For example, years ago I wrote a "fast_clip" function for Numeric, when 
I had some code that was calling clip() a lot. However, it was 
hand-written C, and way too much of a pain to write and maintain 
(evidenced by the fact that it isn't maintained now...)

Cython gets us a long way, but so far only for the true special cases -- 
one data type, one dimensionality. That appears to be the kind of thing 
this thread was started with.

A good templating system would be a great way to make this all possible.

The <as_yet_unamed_data_analysis_toolbox> could be a great way to 
prototype and test such a system.


Christopher Barker, Ph.D.

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