Gary Herron wrote:
[EMAIL PROTECTED] wrote:
Hi,
I am looking to do a simple derivative. I would expect such a function
to be available in numpy, but can't find it. I have written my own,
but just curious if anybody knows of such function in numpy.
Derivatives are a property of functions. Since numpy provides
representations of arrays not functions, how would you expect this to work?
To be more concrete, what you you expect the derivative of
[ [ 1 2 ]
[ 3 4 ]
]
to be?
Or do you have in mind some array representation of the coefficients of
a function of some pre-defined type - like a polynomial?
Typically, when people ask questions like this, they have a uniform, discretely
sampled version of the function, and they want the
(forward,central,backward)-difference approximation of the derivative.
--
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco
--
http://mail.python.org/mailman/listinfo/python-list
