On 7/5/12 11:53 PM, Peng Yu wrote:
On Thu, Jul 5, 2012 at 1:57 PM, John H Palmieri <[email protected]> wrote:
On Thursday, July 5, 2012 11:48:27 AM UTC-7, Peng Yu wrote:
I don't find a convenient way for doing element wise product of vectors.
Is there an operator for it? (or less cumbersome way)
sage: v = vector([1,2,3])
sage: v.pairwise_product(v)
(1, 4, 9)
Is that what you want?
Is there also a convenient way for elementwise divide?
No, but you can do it and many other operations like this:
u = vector([1,2,3])
v = vector([6,5,4])
vector([i/j for i,j in zip(u,v)])
If you use numpy arrays, the operations are all element-wise:
from numpy import array
sage: u=array([1.0,2.0,3.0])
sage: v=array([5.0,4.0,3.0])
sage: u/v
array([ 0.2, 0.5, 1. ])
I wonder if you'd have a more natural time working with numpy arrays.
Thanks,
Jason
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