Forums > Jitter

### Make matrix behave like matrixset

Oct 21 2008 | 4:35 am

I’ve looked at the Paramination path from Andrew Benson’s Jitter Recipes,
which stores multiple matrices of 1d control data in a matrix and then spits
them out one at a time, and wanted to do something similar with 2d data, in
this case all equal-sized images.

Of course, I can store equal sized images in a matrixset, but matrixset,
afaik, can’t have names and be used in more than one place in a patch. And
maybe I just want to meet the challenge of making a matrix behave like a
matrixset.

But my brain must be tired this evening, so I’ll ask if someone has already
solved this problem. I’m pretty sure it’s come up before, but a search of
the archives didn’t turn up any obvious answer.

cheers,

— Paul

—– |(*,+,#,=)(#,=,*,+)(=,#,+,*)(+,*,=,#)| —–

Oct 21 2008 | 4:42 am

Indeed. You can use a 3D matrix for this purpose. There are a number
of examples in the forum. I have an abstraction in my xray.jit
objects called xray.jit.3dbuffer that you can use as is or take apart
for your own twisted purposes:
http://www.mat.ucsb.edu/~whsmith/xray.html

wes

Oct 21 2008 | 4:48 am

Right, I stumbled across that, but haven’t yet tried it out. I guess I’m
obstinately trying to get jit.matrix to do the work just so at some point a
little light will go on in my head and I’ll say–aha, now I see how all
those layers are laid out, and I can now store and grab whatever I want.

But thanks, I will take a more serious look at xray.jit.3dbuffer.

— Paul

On Mon, Oct 20, 2008 at 11:42 PM, Wesley Smith wrote:

> Indeed. You can use a 3D matrix for this purpose. There are a number
> of examples in the forum. I have an abstraction in my xray.jit
> objects called xray.jit.3dbuffer that you can use as is or take apart
> for your own twisted purposes:
> http://www.mat.ucsb.edu/~whsmith/xray.html< http://www.mat.ucsb.edu/%7Ewhsmith/xray.html>
>
> wes
>

—– |(*,+,#,=)(#,=,*,+)(=,#,+,*)(+,*,=,#)| —–

Oct 21 2008 | 4:56 am

On Mon, Oct 20, 2008 at 9:48 PM, Paul Hertz wrote:
> Right, I stumbled across that, but haven’t yet tried it out. I guess I’m
> obstinately trying to get jit.matrix to do the work just so at some point a
> little light will go on in my head and I’ll say–aha, now I see how all
> those layers are laid out, and I can now store and grab whatever I want.

It’s an abstraction around a jit.matrix object, so if you open it up
you’ll see one way to use a jit.matrix object as a matrixset.

wes

Oct 21 2008 | 5:09 am

Yup, I’m looking at it right now. Makes things much clearer, even if it is
after midnight and cloudy here.

Looking forward to checking out the source code you included, too, once I
have some time to dig in.

thanks,

— Paul

On Mon, Oct 20, 2008 at 11:56 PM, Wesley Smith wrote:

> On Mon, Oct 20, 2008 at 9:48 PM, Paul Hertz wrote:
> > Right, I stumbled across that, but haven’t yet tried it out. I guess I’m
> > obstinately trying to get jit.matrix to do the work just so at some point
> a
> > little light will go on in my head and I’ll say–aha, now I see how all
> > those layers are laid out, and I can now store and grab whatever I want.
>
> It’s an abstraction around a jit.matrix object, so if you open it up
> you’ll see one way to use a jit.matrix object as a matrixset.
>
> wes
>

—– |(*,+,#,=)(#,=,*,+)(=,#,+,*)(+,*,=,#)| —–

Oct 21 2008 | 8:29 pm

On 21 oct. 08, at 06:35, Paul Hertz wrote:
> Of course, I can store equal sized images in a matrixset, but
> matrixset, afaik, can’t have names and be used in more than one
> place in a patch.

You might look at the matrixlist example inside the jitter-examples/
java folder.
Statement from the matrixlist example patch: "named matrixlists share
data".

Roby

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