float myValue;
int index; // The global index variable
String[] time;
String[] heart;
String[] speed;

void setup(){
 
 size (1200, 1000);
 frameRate(10);

 time = loadStrings("time.csv");
 heart = loadStrings("heart_rate.csv");
 speed = loadStrings("speed.csv");

}



void draw(){
   float a = new Float(speed[index]);
   line(index * 10, a * 100, a * 50, a * 50);
 
   myValue = 10 * (new Float(time[index]));
   ellipse(index * 10, myValue * 20, myValue * 5, myValue * 5);

   index++; // Check when reaching 120, stop or restart at 0
}