Hello forum!

I try to set up a sequencer in pd. The idea is to have a nice processing sketch where one can draw rects into a grid. The indexes and value of each field activated is sent via osc.
So pd receives something like "/note i j val", where i and j are of course the coordinates and val is the chosen value.

So now I need something like a 2d array in pd that is updated with new values but traversed inside pd (for a good timing).
Do I really have to put many (j times) simple arrays?
Or is there a better/easier/handier way to solve this?

Any help appreciated
thel

May be here:

http://ydegoyon.free.fr/software.html

All these should be included on pd-extended.

Hi

I guess its a matter of how u want to access data.
If its row by row one element at a time I would use a table.
You can do it with one table and read it with a simple counter.

If its column by column theres the [matrix]==[mtx] object from
iemmatrix.

mvh

I made my own a while back that is very similar to table but does not support any of the methods:

[matrix name xlength ylength]
[matread name]
[matwrite name]
[matlength name]

http://www.pdpatchrepo.info/hurleur/matrix.rar

Thanx folks!

No as far as I can see none of your links externals seem to be in my pd-version (0.41.4-extended on a Tiger-Mac).. I download that latest build and give it a try....

The same with [matrix] or [mtx]... they're not there...
The array should be traversed column by column, giving the possibility for polyphony or drum programming.

That matrix-file you posted looks really good. So you break a matrix into a single Array, nice! I wonder if it takes effect on timing, say: Does it take longer to find values? I'll try out this evening (when my son's gone to sleep

So just give me some time and I'll post my first version of that processing patch here!

>The array should be traversed column by column, giving the possibility for polyphony or drum programming.

There's a [matread-line tablename] object in there which I didn't document. It outputs all the values of a single line (y value) in order along with it's column index (x).

You could easily adapt it to be matread-column instead

>So you break a matrix into a single Array, nice! I wonder if it takes effect on timing, say: Does it take longer to find values? I'll try out this evening

Longer compared to what? it's just a matter of multiplying and adding to find the proper index in the array. Can't get any faster than O(1).

Hello back again!

Yes I'm still on it...
I built a little step-sequencer like Processing sketch to store notes in a pd-array (or two). Well, it works - far from being 'beautiful'. That's not a trivial problem in my eyes.
I really had problems to read many field from an array at once,.. and how to send them to the sound-modules? I stayed at the simplest direct connection level (instead of a list per step).
I still hope there is a more comfortable way to do this.

However, maybe someone give it a try?
It's packed with Mac/Win/Linux executables, the processing source, pd-files and scores in text files so that one can just get started.

http://www.pdpatchrepo.info/hurleur/Confetti02.zip

{{..and here's a small preview:}}
==> moved it to the right place

thanx for your help; I need to get deeper into pd
thel