Hello,

i'm trying to use a matrix for evolutionary sound algorithm, but i dont' know Pd very well.

How is the best way to access the position X Y of a matrix?

My newbie idea:

i created a text file, with my matrix:

2 2 1 2 2 2 1 ;
2 1 2 2 2 1 2 ;
1 2 2 2 1 2 2 ;
2 2 2 1 2 2 1 ;
2 2 1 2 2 1 2 ;
2 1 2 2 1 2 2 ;
1 2 2 1 2 2 2 ;

so i'm reading this matrix x times to reach line x. But it is very stupid, cause the outlet is sent several times, when i want just the last one.

Could anyone help me? Anyway i would want to know a good solution for my bad idea too, how could i catch just the last bang i send to a [textfile]???

THX!!!

Maybe you should try [coll] instead. You can call a specific element using the [nth( message.

there are also dedicated matrix objects somewhere in pd-extended. [matrix] or [mtx] i think?

i used to make my own in vanilla though. i just converted the matrix into one long array, and calculated positions using simple maths.
like, in your example above, you have 7 elements in each row. so, you send the first row to array slots 0-6, and then send the second row to slots 7-13, third row to slots 14-20...etc

then it's just some simple [mod] [div] stuff to find any position in the matrix and read it using [tabread]