Processing Positioning IR Camera Code

import processing.serial.*;

int lf = 10;    // Linefeed in ASCII
String myString = null;
Serial myPort;  // The serial port
int rad = 5;        // Width of the shape

void setup() {
  size(1024, 768);
  noStroke();
  frameRate(30);
  ellipseMode(RADIUS);
  // List all the available serial ports
  printArray(Serial.list());
  // Open the port you are using at the rate you want:
  myPort = new Serial(this, Serial.list()[5], 115200);
  myPort.clear();
  // Throw out the first reading, in case we started reading 
  // in the middle of a string from the sender.
  myString = myPort.readStringUntil(lf);
  myString = null;
}

void draw() {
  background(102);
  while (myPort.available() > 0) {
    myString = myPort.readStringUntil(lf);
    String[] list = split(myString, ',');
    ellipse(float(list[0]), float(list[1]), rad, rad);
    ellipse(float(list[2]), float(list[3]), rad, rad);
    ellipse(float(list[4]), float(list[5]), rad, rad);
    ellipse(float(list[6]), float(list[7]), rad, rad);
    if (myString != null) {
      println(myString);
    }
  }
 
}