[PD] vbap and matrix external

[zmoelnig at iem.at]

Quoting Hector Centeno <hcengar at gmail.com>:

> Also, I was wondering if anyone has a link to a manual page for the old
> [matrix] and [matrix~] so I can understand whats going on and see how to
> replace them with the newer ones.
>

the problem is, that both [matrix~] from iemmatrix and from cyclone  
are incompatible; so which documentation do you want?


the doc for iemmatrix's [mtx_*~] should give you some clues on how the  
object is used (even in the old incarnation of [matrix~]. basically,  
the matrix now goes into the 1st inlet instead of the second-last one  
and it has to be transposed.
the old version used a notation of
   out^ = in^ * A
while the new version uses
   out^ = B * in^

(which implies that B=A')


i do not know of anz issues with the [matrix] object nor of any  
incompatibilities.
i do not conisider it deprecated.

mfg.asdr
IOhannes


> Thanks!
>
> Hector
>
>
> On 8/29/07, Hector Centeno <hcengar at gmail.com> wrote:
>>
>> Hello Kevin,
>>
>> Thank you for your response. Does that mean I have to change the patch (
>> vbapdemo.pd) to substitute the [matrix] and [matrix~] by [mtx_mu] and
>> [mtx_mu~]? Do they work the same or that means I would have to do further
>> changes?
>>
>> Thanks!
>>
>>
>>
>> On 8/28/07, Kevin McCoy <km.takewithyou at gmail.com> wrote:
>> >
>> > Hi Hector,
>> >
>> > As far as I remember, the correct one to use is [mtx_mul] and
>> > [mtx_mul~]; as IOhannes told me, [matrix] & etc is deprecated if I
>> > remember correctly.  The correct ones are from the excellent iemmatrix
>> > library.
>> >
>> > I think the vbap directory is the more recent one which should be
>> > Ville Pulkki's work.  Have a look at the documentation in there.
>> >
>> > Hope this helps,
>> > Kevin
>> >
>> >
>> > On 8/28/07, Hector Centeno < hcengar at gmail.com> wrote:
>> > > Hi,
>> > >
>> > > I'm trying to get vbap working using Linux Fedora 7/Planet CCRMA. I'm
>> > using
>> > > the Planet's packages which are version 0.39.2. First I found vbap in
>> > two
>> > > different places:
>> > >
>> > > /usr/lib/pd/extra/vbap
>> > > /usr/lib/pd/extra/ggee
>> > >
>> > > What is the difference?
>> > > So I tried with the vbap directory. When trying to load the demo I
>> > struggled
>> > > with finding matrix and matrix~. There are externals named like this
>> > in
>> > > different directories:
>> > >
>> > > /usr/lib/pd/extra/cyclone/matrix~.pd_linux
>> > > /usr/lib/pd/extra/flatspace/matrix.pd_linux
>> > > /usr/lib/pd/extra/flatspace/matrix~.pd_linux
>> > > /usr/lib/pd/extra/creb/matrix~.pd_linux
>> > >
>> > > Does anyone know which ones are the right ones to use? I managed to
>> > get the
>> > > demo loaded and running using the matrix in flatspace and matrix~ in
>> > cyclone
>> > > but I can't get any audio output. I'm fairly new to PD so some help
>> > would be
>> > > appreciated.
>> > >
>> > > Cheers,
>> > >
>> > > Hector
>> > >
>> > > _______________________________________________
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>> > >
>> >
>> >
>> > --
>> >
>> >
>> > ++++
>> > http://pocketkm.blogspot.com
>> >
>> >
>> > --
>> >
>> >
>> > ++++
>> > http://pocketkm.blogspot.com
>> >
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>
>
>
>
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