[SciPy-user] SciPy-user Digest, Vol 53, Issue 18
Juan Martinez
jmartinezs at sii.cl
Thu Jan 10 10:22:49 EST 2008
Lorenzo, Stef... Thank you very much for your help, It was very usefull
Juan
-----Mensaje original-----
De: scipy-user-bounces at scipy.org [mailto:scipy-user-bounces at scipy.org] En
nombre de scipy-user-request at scipy.org
Enviado el: Jueves, 10 de Enero de 2008 12:10
Para: scipy-user at scipy.org
Asunto: SciPy-user Digest, Vol 53, Issue 18
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Today's Topics:
1. Re: I'm a newbie in Python ans SciPy... so i've a little
question (lorenzo bolla)
2. Re: I'm a newbie in Python ans SciPy... so i've a little
question (Alan G Isaac)
3. Re: I'm a newbie in Python ans SciPy... so i've a little
question (lorenzo bolla)
4. Re: Mie (lorenzo bolla)
5. Re: Mie (Stef Mientki)
----------------------------------------------------------------------
Message: 1
Date: Thu, 10 Jan 2008 15:53:59 +0100
From: "lorenzo bolla" <lbolla at gmail.com>
Subject: Re: [SciPy-user] I'm a newbie in Python ans SciPy... so i've
a little question
To: jmartinezs at sii.cl, "SciPy Users List" <scipy-user at scipy.org>
Message-ID:
<80c99e790801100653w3e0fa02buc9bab34c2a25d46 at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
no idea...
but if you use numpy, no problem!
#import numarray as N
import numpy as N
import scipy.linalg as S
ar = N.array([[4.0, -2.0, 1.0], \
[-2.0, 4.0, -2.0], \
[1.0, -2.0, 3.0]])
print 'Before det() ar = \n', ar
print N.det(ar) # Get
determinant of ar
print 'After det() ar = \n', ar
hth,
L.
On 1/10/08, Juan Martinez <jmartinezs at sii.cl> wrote:
>
> Hello Everybody:
>
> I'm a newbie user of Scipy, and i try to get a determinant of a
> matrix, but the matrix object is modified for the method det() of
> linalg
>
> A little piece of with example..
>
> CODE
>
> #!/usr/bin/env python
> # coding: latin-1
>
> # Modules import
> from numarray import *
> from scipy.linalg import *
>
> ar = array([[4.0, -2.0, 1.0], \
> [-2.0, 4.0, -2.0], \
> [1.0, -2.0, 3.0]])
> print 'Before det() ar = \n', ar
>
> print det(ar) # Get
> determinant of ar
> print 'After det() ar = \n', ar
>
> END CODE
>
>
> ON SCREEN
>
> Before det() ar =
> [[ 4. -2. 1.]
> [-2. 4. -2.]
> [ 1. -2. 3.]]
> After det() ar =
> [[ 4. -0.5 0.25]
> [-2. 3. -0.5 ]
> [ 1. -1.5 2. ]]
>
> END OUTPUT
>
> Please, help me to know what i'm doing wrong.
>
> Thank you in advance
>
>
>
> _______________________________________________
> SciPy-user mailing list
> SciPy-user at scipy.org
> http://projects.scipy.org/mailman/listinfo/scipy-user
>
>
--
Lorenzo Bolla
lbolla at gmail.com
http://lorenzobolla.emurse.com/
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Message: 2
Date: Thu, 10 Jan 2008 09:55:18 -0500
From: Alan G Isaac <aisaac at american.edu>
Subject: Re: [SciPy-user] I'm a newbie in Python ans SciPy... so i've
a little question
To: scipy-user at scipy.org
Message-ID: <Mahogany-0.67.0-348-20080110-095518.00 at american.edu>
Content-Type: TEXT/PLAIN; CHARSET=UTF-8
I no longer have numarray, but that is probably not the issue. I do not see
this behavior with the NumPy and SciPy Windows binaries.
Cheers,
Alan Isaac
Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310
32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy as N
>>> N.__version__
'1.0.4'
>>> import scipy as S
>>> S.__version__
'0.6.0'
>>> import numpy.linalg as L
>>> ar = N.array([[4.0, -2.0, 1.0], \
... [-2.0, 4.0, -2.0], \
... [1.0, -2.0, 3.0]])
>>> ar
array([[ 4., -2., 1.],
[-2., 4., -2.],
[ 1., -2., 3.]])
>>> L.det(ar)
24.0
>>> ar
array([[ 4., -2., 1.],
[-2., 4., -2.],
[ 1., -2., 3.]])
>>> import scipy.linalg as Ls
>>> Ls.det(ar)
24.0
>>> ar
array([[ 4., -2., 1.],
[-2., 4., -2.],
[ 1., -2., 3.]])
------------------------------
Message: 3
Date: Thu, 10 Jan 2008 15:55:53 +0100
From: "lorenzo bolla" <lbolla at gmail.com>
Subject: Re: [SciPy-user] I'm a newbie in Python ans SciPy... so i've
a little question
To: jmartinezs at sii.cl, "SciPy Users List" <scipy-user at scipy.org>
Message-ID:
<80c99e790801100655i2548098fhdc26e7120796007f at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
ops, I meant:
print S.det(ar) # Get
determinant of ar
sorry for the noise,
L.
On 1/10/08, lorenzo bolla <lbolla at gmail.com> wrote:
>
> no idea...
> but if you use numpy, no problem!
>
>
> #import numarray as N
> import numpy as N
> import scipy.linalg as S
>
> ar = N.array([[4.0, -2.0, 1.0], \
> [-2.0, 4.0, -2.0], \
> [1.0, -2.0, 3.0]])
> print 'Before det() ar = \n', ar
>
> print N.det(ar) # Get
> determinant of ar
> print 'After det() ar = \n', ar
>
>
> hth,
> L.
>
>
> On 1/10/08, Juan Martinez <jmartinezs at sii.cl> wrote:
>
> > Hello Everybody:
> >
> > I'm a newbie user of Scipy, and i try to get a determinant of a
> > matrix, but the matrix object is modified for the method det() of
> > linalg
> >
> > A little piece of with example..
> >
> > CODE
> >
> > #!/usr/bin/env python
> > # coding: latin-1
> >
> > # Modules import
> > from numarray import *
> > from scipy.linalg import *
> >
> > ar = array([[4.0, -2.0, 1.0], \
> > [-2.0, 4.0, -2.0], \
> > [1.0, -2.0, 3.0]])
> > print 'Before det() ar = \n', ar
> >
> > print det(ar) # Get
> > determinant of ar
> > print 'After det() ar = \n', ar
> >
> > END CODE
> >
> >
> > ON SCREEN
> >
> > Before det() ar =
> > [[ 4. -2. 1.]
> > [-2. 4. -2.]
> > [ 1. -2. 3.]]
> > After det() ar =
> > [[ 4. -0.5 0.25]
> > [-2. 3. -0.5 ]
> > [ 1. -1.5 2. ]]
> >
> > END OUTPUT
> >
> > Please, help me to know what i'm doing wrong.
> >
> > Thank you in advance
> >
> >
> >
> > _______________________________________________
> > SciPy-user mailing list
> > SciPy-user at scipy.org
> > http://projects.scipy.org/mailman/listinfo/scipy-user
> >
> >
>
>
> --
> Lorenzo Bolla
> lbolla at gmail.com
> http://lorenzobolla.emurse.com/
--
Lorenzo Bolla
lbolla at gmail.com
http://lorenzobolla.emurse.com/
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Message: 4
Date: Thu, 10 Jan 2008 15:58:43 +0100
From: "lorenzo bolla" <lbolla at gmail.com>
Subject: Re: [SciPy-user] Mie
To: "SciPy Users List" <scipy-user at scipy.org>
Message-ID:
<80c99e790801100658g98d57b3i399bf8501cad993a at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
If you found it, or if you'd like to write your own, please let me know.
I'm trying to collect some useful electromagnetic routines in one package
called EMpy (empy.sourceforge.net) and a piece of code like this might be a
useful inclusion.
Regards,
Lorenzo
On 1/10/08, Lars Friedrich <lfriedri at imtek.de> wrote:
>
> Hello,
>
> is there some open source code for Python/scipy that will compute the
> Mie coefficients in light scattering for different particle sizes,
> refractive indices, and scattering angles?
>
> Lars
> _______________________________________________
> SciPy-user mailing list
> SciPy-user at scipy.org
> http://projects.scipy.org/mailman/listinfo/scipy-user
>
--
Lorenzo Bolla
lbolla at gmail.com
http://lorenzobolla.emurse.com/
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Message: 5
Date: Thu, 10 Jan 2008 16:10:01 +0100
From: Stef Mientki <s.mientki at ru.nl>
Subject: Re: [SciPy-user] Mie
To: SciPy Users List <scipy-user at scipy.org>
Message-ID: <47863549.8030505 at ru.nl>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
hi Lorenzo,
lorenzo bolla wrote:
> If you found it, or if you'd like to write your own, please let me know.
> I'm trying to collect some useful electromagnetic routines in one
> package called EMpy (empy.sourceforge.net
> <http://empy.sourceforge.net>) and a piece of code like this might be
> a useful inclusion.
it this of any interest ?
http://www.mare.ee/indrek/ephi/
cheers,
Stef
>
> Regards,
> Lorenzo
>
>
> On 1/10/08, *Lars Friedrich* <lfriedri at imtek.de
> <mailto:lfriedri at imtek.de>> wrote:
>
> Hello,
>
> is there some open source code for Python/scipy that will compute the
> Mie coefficients in light scattering for different particle sizes,
> refractive indices, and scattering angles?
>
> Lars
> _______________________________________________
> SciPy-user mailing list
> SciPy-user at scipy.org <mailto:SciPy-user at scipy.org>
> http://projects.scipy.org/mailman/listinfo/scipy-user
>
>
>
>
> --
> Lorenzo Bolla
> lbolla at gmail.com <mailto:lbolla at gmail.com>
> http://lorenzobolla.emurse.com/
> ----------------------------------------------------------------------
> --
>
> _______________________________________________
> SciPy-user mailing list
> SciPy-user at scipy.org
> http://projects.scipy.org/mailman/listinfo/scipy-user
>
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