numpy-discussion

[Numpy-discussion] how to use 'convolve/filter' package?

[Nao S. <NS...@lb...>]

Hello there,

My name is Nao Suzuki and I'm a postdoc at Berkeley Lab.

I've been using numarray about a year, and I found it
very useful and I appreciate your excellent work!

Today, I've been trying to take the advantage of filter
packages but none of them work so far.  Here is the
attempt to reproduce what's shown in the manual.


>>> from numarray import *
>>> a=[0,0,0,1,0,0,0]
>>> correlate1d(a, [1, 1, 1])
>>>
Traceback (most recent call last):
    File "<stdin>", line 1, in ?
NameError: name 'correlate1d' is not defined

Could someone tell me what I'm missing?  Do I need to include
something special?  Please let me know if you can give me some
hints.  I'm stuck here for long time now.

Thank you very much!

--Nao

Re: [Numpy-discussion] how to use 'convolve/filter' package?

[<rba...@fr...>]

Le Dimanche 15 Octobre 2006 08:28, Nao Suzuki a =E9crit :
> Hello there,
>
> My name is Nao Suzuki and I'm a postdoc at Berkeley Lab.
>
> I've been using numarray about a year, and I found it
> very useful and I appreciate your excellent work!
>
> Today, I've been trying to take the advantage of filter
> packages but none of them work so far.  Here is the
> attempt to reproduce what's shown in the manual.
>
> >>> from numarray import *
> >>> a=3D[0,0,0,1,0,0,0]
> >>> correlate1d(a, [1, 1, 1])
>
> Traceback (most recent call last):
>     File "<stdin>", line 1, in ?
> NameError: name 'correlate1d' is not defined

May be it depends which version of numarray, but try
something like

import numarray.nd_image as NDI

NDI.correlate1d(a, [1, 1, 1])

it works with numarray 1.5

>
> Could someone tell me what I'm missing?  Do I need to include
> something special?  Please let me know if you can give me some
> hints.  I'm stuck here for long time now.
>
> Thank you very much!
>
> --Nao
>
>
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--=20
Ren=E9 Bastian
http://www.musiques-rb.org
http://pythoneon.musiques-rb.org

Re: [Numpy-discussion] how to use 'convolve/filter' package?

[Alan G I. <ai...@am...>]

On Sat, 14 Oct 2006, Nao Suzuki apparently wrote:=20
> Today, I've been trying to take the advantage of filter=20
> packages but none of them work so far.  Here is the=20
> attempt to reproduce what's shown in the manual.
>>>> from numarray import *
>>>> a=3D[0,0,0,1,0,0,0]
>>>> correlate1d(a, [1, 1, 1])


As I understand it (not a numarray user),
numarray is superceded by numpy,
and this function is just called 'correlate'
in numpy.

hth,
Alan Isaac