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Eigenvalues and eigenvectors

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Natalia Tymchuk

Apr 07, 2014; 3:20pm

Eigenvalues and eigenvectors

114 posts

Hello,

Can somebody tell me if in SciSmalltalk are some methods for finding the eigenvalues and eigenvectors of matrix?

Best regards,

Natalia

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SergeStinckwich

Apr 07, 2014; 3:26pm

Re: Eigenvalues and eigenvectors

2177 posts

Dear Natalia,

apparently there is something here :
https://github.com/Cuis-Smalltalk/Cuis-Smalltalk/blob/master/Packages/LinearAlgebra.pck.st
Did you check DHBNumerical package available in SciSmalltalk ?

More documentation is needed ;-)
Regards,

On Mon, Apr 7, 2014 at 5:20 PM, Natalia Tymchuk
<[hidden email]> wrote:

> Hello,
> Can somebody tell me if in SciSmalltalk are some methods for finding the
> eigenvalues and eigenvectors of matrix?
> Best regards,
> Natalia
>
> --
> You received this message because you are subscribed to the Google Groups
> "SciSmalltalk" group.
> To unsubscribe from this group and stop receiving emails from it, send an
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--
Serge Stinckwich
UCBN & UMI UMMISCO 209 (IRD/UPMC)
Every DSL ends up being Smalltalk
http://www.doesnotunderstand.org/

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Nicolas Cellier

Apr 07, 2014; 7:50pm

Re: Eigenvalues and eigenvectors

5620 posts

You can also give a try to ConfigurationOfSmallapack.

There might be a conflict or too with Complex numbers (SciSmalltalk forked from the original, which was extracted from Squeak), but it should not be too complex to merge.

See also https://code.google.com/p/smallapack/

Nicolas

2014-04-07 17:26 GMT+02:00 Serge Stinckwich <[hidden email]>:

Dear Natalia,

apparently there is something here :
https://github.com/Cuis-Smalltalk/Cuis-Smalltalk/blob/master/Packages/LinearAlgebra.pck.st
Did you check DHBNumerical package available in SciSmalltalk ?

More documentation is needed ;-)
Regards,

On Mon, Apr 7, 2014 at 5:20 PM, Natalia Tymchuk
<[hidden email]> wrote:
> Hello,
> Can somebody tell me if in SciSmalltalk are some methods for finding the
> eigenvalues and eigenvectors of matrix?
> Best regards,
> Natalia
>
> --
> You received this message because you are subscribed to the Google Groups
> "SciSmalltalk" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to [hidden email].
> For more options, visit https://groups.google.com/d/optout.

--
Serge Stinckwich
UCBN & UMI UMMISCO 209 (IRD/UPMC)
Every DSL ends up being Smalltalk
http://www.doesnotunderstand.org/

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... [show rest of quote]

Natalia Tymchuk

Apr 07, 2014; 8:17pm

Re: Eigenvalues and eigenvectors

114 posts

Thank you,

I will take a look at both suggestions.

Best wishes,

Natalia

On Apr 7, 2014, at 9:50 PM, Nicolas Cellier <[hidden email]> wrote:

You can also give a try to ConfigurationOfSmallapack.
There might be a conflict or too with Complex numbers (SciSmalltalk forked from the original, which was extracted from Squeak), but it should not be too complex to merge.

See also https://code.google.com/p/smallapack/

Nicolas

2014-04-07 17:26 GMT+02:00 Serge Stinckwich <[hidden email]>:

Dear Natalia,

apparently there is something here :
https://github.com/Cuis-Smalltalk/Cuis-Smalltalk/blob/master/Packages/LinearAlgebra.pck.st
Did you check DHBNumerical package available in SciSmalltalk ?

More documentation is needed ;-)
Regards,

On Mon, Apr 7, 2014 at 5:20 PM, Natalia Tymchuk
<[hidden email]> wrote:
> Hello,
> Can somebody tell me if in SciSmalltalk are some methods for finding the
> eigenvalues and eigenvectors of matrix?
> Best regards,
> Natalia
>
> --
> You received this message because you are subscribed to the Google Groups
> "SciSmalltalk" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to [hidden email].
> For more options, visit https://groups.google.com/d/optout.

--
Serge Stinckwich
UCBN & UMI UMMISCO 209 (IRD/UPMC)
Every DSL ends up being Smalltalk
http://www.doesnotunderstand.org/

--
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... [show rest of quote]

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werner kassens-2

Apr 07, 2014; 9:36pm

Re: Eigenvalues and eigenvectors

227 posts

In reply to this post by Natalia Tymchuk

Hi Natalia,
for _symmetric_ matrices there is jacoby's algorithm to calculate eigenvectors and eigenvalues in dhb.
werner

Natalia Tymchuk

Apr 08, 2014; 11:28am

Re: Eigenvalues and eigenvectors

114 posts

Thank you.

Best regards,

Natalia

On Apr 7, 2014, at 11:36 PM, werner kassens <[hidden email]> wrote:

Hi Natalia,
for _symmetric_ matrices there is jacoby's algorithm to calculate eigenvectors and eigenvalues in dhb.
werner

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Natalia Tymchuk

Apr 11, 2014; 6:27pm

Re: Eigenvalues and eigenvectors

114 posts

In reply to this post by werner kassens-2

Hello,

Can you tell me who is maintaining DHB project? Maybe it is possible to rename the asVector method to asDhbVector, because Moose overrides this method?

Best regards,

Natalia

On Apr 7, 2014, at 11:36 PM, werner kassens <[hidden email]> wrote:

Hi Natalia,
for _symmetric_ matrices there is jacoby's algorithm to calculate eigenvectors and eigenvalues in dhb.
werner

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SergeStinckwich

Apr 12, 2014; 1:40am

Re: Eigenvalues and eigenvectors

2177 posts

Us ;-)

Modify the code and commit.

Regards

Envoyé de mon iPhone

Le 12 avr. 2014 à 01:27, Natalia Tymchuk <[hidden email]> a écrit :

Hello,
Can you tell me who is maintaining DHB project? Maybe it is possible to rename the asVector method to asDhbVector, because Moose overrides this method?

Best regards,
Natalia

On Apr 7, 2014, at 11:36 PM, werner kassens <[hidden email]> wrote:

Hi Natalia,
for _symmetric_ matrices there is jacoby's algorithm to calculate eigenvectors and eigenvalues in dhb.
werner

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... [show rest of quote]

werner kassens-2

Apr 12, 2014; 11:28am

Re: Eigenvalues and eigenvectors

227 posts

In reply to this post by Natalia Tymchuk

Hi Natalia,
it would be nice if you could do that renaming.
werner

SergeStinckwich

Apr 15, 2014; 3:09am

Re: Eigenvalues and eigenvectors

2177 posts

In reply to this post by Natalia Tymchuk

Did you made the modification Natalia ?
Regards,

On Sat, Apr 12, 2014 at 1:27 AM, Natalia Tymchuk
<[hidden email]> wrote:

> Hello,
> Can you tell me who is maintaining DHB project? Maybe it is possible to
> rename the asVector method to asDhbVector, because Moose overrides this
> method?
>
> Best regards,
> Natalia
>
> On Apr 7, 2014, at 11:36 PM, werner kassens <[hidden email]> wrote:
>
> Hi Natalia,
> for _symmetric_ matrices there is jacoby's algorithm to calculate
> eigenvectors and eigenvalues in dhb.
> werner
>
> --
> You received this message because you are subscribed to a topic in the
> Google Groups "SciSmalltalk" group.
> To unsubscribe from this topic, visit
> https://groups.google.com/d/topic/scismalltalk/JKn37ATaONQ/unsubscribe.
> To unsubscribe from this group and all its topics, send an email to
> [hidden email].
>
> For more options, visit https://groups.google.com/d/optout.
>
>
> --
> You received this message because you are subscribed to the Google Groups
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... [show rest of quote]

Natalia Tymchuk

Apr 15, 2014; 10:12am

Re: Eigenvalues and eigenvectors

114 posts

Hello,
I just committed changes, sorry for waiting - I'm on my trip to Ukraine.
Best regards,
Natalia

On Apr 15, 2014, at 5:09 AM, Serge Stinckwich <[hidden email]> wrote:

> Did you made the modification Natalia ?
> Regards,
>
> On Sat, Apr 12, 2014 at 1:27 AM, Natalia Tymchuk
> <[hidden email]> wrote:
>> Hello,
>> Can you tell me who is maintaining DHB project? Maybe it is possible to
>> rename the asVector method to asDhbVector, because Moose overrides this
>> method?
>>
>> Best regards,
>> Natalia
>>
>> On Apr 7, 2014, at 11:36 PM, werner kassens <[hidden email]> wrote:
>>
>> Hi Natalia,
>> for _symmetric_ matrices there is jacoby's algorithm to calculate
>> eigenvectors and eigenvalues in dhb.
>> werner
>>
>> --
>> You received this message because you are subscribed to a topic in the
>> Google Groups "SciSmalltalk" group.
>> To unsubscribe from this topic, visit
>> https://groups.google.com/d/topic/scismalltalk/JKn37ATaONQ/unsubscribe.
>> To unsubscribe from this group and all its topics, send an email to
>> [hidden email].
>>
>> For more options, visit https://groups.google.com/d/optout.
>>
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "SciSmalltalk" group.
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>
>
>
> --
> Serge Stinckwich
> UCBN & UMI UMMISCO 209 (IRD/UPMC)
> Every DSL ends up being Smalltalk
> http://www.doesnotunderstand.org/
>
> --
> You received this message because you are subscribed to a topic in the Google Groups "SciSmalltalk" group.
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... [show rest of quote]

SergeStinckwich

Apr 15, 2014; 10:13am

Re: Eigenvalues and eigenvectors

2177 posts

Thank you Natalia.
Take care.

On Tue, Apr 15, 2014 at 5:12 PM, Natalia Tymchuk
<[hidden email]> wrote:

> Hello,
> I just committed changes, sorry for waiting - I'm on my trip to Ukraine.
> Best regards,
> Natalia
>
> On Apr 15, 2014, at 5:09 AM, Serge Stinckwich <[hidden email]> wrote:
>
>> Did you made the modification Natalia ?
>> Regards,
>>
>> On Sat, Apr 12, 2014 at 1:27 AM, Natalia Tymchuk
>> <[hidden email]> wrote:
>>> Hello,
>>> Can you tell me who is maintaining DHB project? Maybe it is possible to
>>> rename the asVector method to asDhbVector, because Moose overrides this
>>> method?
>>>
>>> Best regards,
>>> Natalia
>>>
>>> On Apr 7, 2014, at 11:36 PM, werner kassens <[hidden email]> wrote:
>>>
>>> Hi Natalia,
>>> for _symmetric_ matrices there is jacoby's algorithm to calculate
>>> eigenvectors and eigenvalues in dhb.
>>> werner
>>>
>>> --
>>> You received this message because you are subscribed to a topic in the
>>> Google Groups "SciSmalltalk" group.
>>> To unsubscribe from this topic, visit
>>> https://groups.google.com/d/topic/scismalltalk/JKn37ATaONQ/unsubscribe.
>>> To unsubscribe from this group and all its topics, send an email to
>>> [hidden email].
>>>
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>>
>>> --
>>> You received this message because you are subscribed to the Google Groups
>>> "SciSmalltalk" group.
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>>
>>
>>
>> --
>> Serge Stinckwich
>> UCBN & UMI UMMISCO 209 (IRD/UPMC)
>> Every DSL ends up being Smalltalk
>> http://www.doesnotunderstand.org/
>>
>> --
>> You received this message because you are subscribed to a topic in the Google Groups "SciSmalltalk" group.
>> To unsubscribe from this topic, visit https://groups.google.com/d/topic/scismalltalk/JKn37ATaONQ/unsubscribe.
>> To unsubscribe from this group and all its topics, send an email to [hidden email].
>> For more options, visit https://groups.google.com/d/optout.
>
> --
> You received this message because you are subscribed to the Google Groups "SciSmalltalk" group.
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... [show rest of quote]