johntre

Fairly simple question, but I'm new to gen~ and fairly new to trying to do logic in Max. I'm trying to implement the Tinkerbell map in Max/Gen (

http://en.wikipedia.org/wiki/Tinkerbell_map),

 but I seem to be having trouble actually moving the equation along an iteration as the parameters all stay the same, but the equation repeats itself. Here is what I have so far (the math might not be correct, I'm pretty bad). I was thinking I might need a sig~ to somehow move the gen~ along?

This is the code for the equation in java

double a = 0.9, b = -0.6013, c = 2.0, d = 0.5;

out.write(x+" "+y+"n"); //writing data to a txt file to be read by Mathematica

Fairly simple question, but I'm new to gen~ and fairly new to trying to do logic in Max.  I'm trying to implement the Tinkerbell map in Max/Gen (http://en.wikipedia.org/wiki/Tinkerbell_map), but I seem to be having trouble actually moving the equation along an iteration as the parameters all stay the same, but the equation repeats itself.  Here is what I have so far (the math might not be correct, I'm pretty bad).  I was thinking I might need a sig~ to somehow move the gen~ along?

    int time = 0, iterations = 50000;
    double x = -0.72, y = -0.64;
    double a = 0.9, b = -0.6013, c = 2.0, d = 0.5;
    while (time < iterations) {
      double oldX = x;
      x = Math.pow(x,2)-Math.pow(y,2)+a*x+b*y;
      y = 2*oldX*y+c*oldX+d*y;
      out.write(x+" "+y+"n"); //writing data to a txt file to be read by Mathematica
      time++;
    }


iteration-tinkerbell-map-help

There's nothing here that suggests to me that you need a signal input at all.

At the moment, while loops aren't implemented. So I'd suggest that you take a look at the counter example in the gen examples folder and use that - "starting" the object would, then, kick out the whole list of values. The actual calculation stuff is fine, save that you don't really need to have a separate prevx history object - "history X -0.64" should initialize the x value for starters.

At the moment, while loops aren't implemented. So I'd suggest that you take a look at the counter example in the gen examples folder and use that - "starting" the object would, then, kick out the whole list of values. The actual calculation stuff is fine, save that you don't really need to have a separate prevx history object - "history X  -0.64" should initialize the x value for starters.


Iteration - Tinkerbell Map help