[SciPy-user] Vectorize vs Map

Travis Oliphant oliphant@ee.byu....
Thu Mar 15 11:58:56 CDT 2007

Lorenzo Isella wrote:

>Dear All,
>Probably another newbie question: I like quite a lot the vectorize()
>command which allows me to skip iterations on functions, but the map()
>command on a list performs a similar task if I am not mistaken.
>Is there any reason to favour one above the other or is it just a
>matter of taste?
map only works with sequences (i.e. 1-d arrays) and does not do 
broadcasting for multiple-valued functions.

vectorize works with multiple dimensional arrays and also does 

I have not done any timings but I suspect there are lots of cases where 
map is probably faster because it does less.


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