I'm trying to visualize some data gathered via Arduino in Processing. Right now, the Arduino collects a string of numbers via EEG, all separated by commas. I'm just really confused at to what I should do in processing to get the program to use these separate numbers as variables in a visualization...... Can anyone shed some light?  

Right now I have it so that Processing is able to print the serials form the Arduino:

1. import processing.serial.*; //import the Serial library
2. 
   
3. int end = 10; 
4. String serial;
5. Serial port;  
6. 
   
7. void setup() {
8.   port = new Serial(this, Serial.list()[0], 9600); 
9.   port.clear();
10.   serial = port.readStringUntil(end); 
11.   serial = null;
12. }
13. 
    
14. void draw() {
15. 
    
16.   while (port.available () > 0) { 
17.     serial = port.readStringUntil(end);
18.   }
19.   if (serial != null) { 
20. 
    
21. 
    
22.     String[] a = split(serial, ','); 
23. 
    
24.     delay(100);
25.     print("a[0] : "); 
26.     println(a[0]); //print Value1 (in cell 1 of Array - remember that arrays are zero-indexed)
27.     print("a[3] : ");
28.     println(a[3]);
29.     print("a[5] : ");
30.     println(a[5]);
31.     print("a[7] : ");
32.     println(a[7]); //print Value7 value
33.     delay(100);
34.   }
35. }