I have searched and searched but with no success, I have the code all working I just need a way to scroll through the images. This is way I would like a potentiomter to scroll through the images, whats different about mine is that I am using RFID and no one seems to have done anything similar. My code to load the images is below, any idea how I could write the part for the potentiometer in ? Any tips will be great; 

2. import processing.serial.*;
3. import ddf.minim.*;//declare
4. AudioPlayer player;
5. Minim minim;
6. 
   
7. Serial portOne;    // the first serial port
8. Serial portTwo;    // the second serial port
9. 
   
10. boolean showImage;  // whether or not to show the image
11. // the list of names
12. String[] tags = {
13.   "5100C2F495F2","5100C2EB6F17"};
14.   
15.   String tag="";
16. 
    
17. // the list of people
18. PImage thisImage;
19. 
    
20. int maxPics =5;
21. 
    
22. int pictureNumber = 1;
23. 
    
24. void setup() {
25.   size(1000, 664);
26.   showImage = false;
27.   // list the serial ports
28.   println(Serial.list());
29.   // open the serial ports:
30.   portOne = new Serial(this, Serial.list()[16], 9600);
31.   // set both ports to buffer information until you get 0x03:
32.   portOne.bufferUntil(0x03);
33.    minim=new Minim(this);
34. 
    
35.  
36.  }
37.  
38. 
    
39.  void draw() {
40.  background(255,255,255);
41.   if(tag!="")
42.   {
43.     getImage(tag,pictureNumber);
44.     image(thisImage, 0, 0);
45.   }
46.   // if there's an image to show, show it:
47.   if (showImage) {
48.   image(thisImage, 0, 0);
49.   }
50. }
51. 
    
52. void serialEvent(Serial thisPort) {
53.   // read the incoming serial data:
54.   String inString = thisPort.readStringUntil(0x03);
55. 
    
56.   // if the string is not empty, do stuff with it:
57.   if (inString != null) {
58.     // if the string came from serial port one:
59.     if (thisPort == portOne) {
60.       print ("Data from port one: ");
61.     }
62.     // if the string came from serial port two:
63.     if (thisPort == portTwo) {
64.       print ("Data from port two: ");
65.     }
66.     // print the string:
67.     println(inString);
68.     
69.     println(inString.substring(1,13)+".jpg");
70.    // images[i] = loadImage(inString.substring(1,13)+ "/" + i + ".jpg" ); 
71.     
72.     println(inString.substring(1,13)+"/music.mp3");
73.     if(player!=null)
74.     {
75.       player.pause();
76.       player.close();
77.     }
78.     player=minim.loadFile(inString.substring(1,13)+"/music.mp3");//locate file
79.     println(player);
80.      player.play();//when opened play this
81. 
    
82.     // the tag ID is only bytes 1 through 13. Get it:
83.     tag = inString.substring(1, 13);
84.   }
85. }
86. 
    
87. 
    
88. 
    
89. 
    
90. // Get random image from the folder filelist array
91. void getImage(String tag,int picture) {
92.   String filenames[];
93. 
    
94.   try{
95.     // open the directory:
96.     File directory = new File(sketchPath("data")+"/"+tag);
97.     
98.     // list the files in the directory:
99.     filenames = directory.list();
100. 
     
101.     int picCounter=0;
102.     for(int thisFile = 0; thisFile<filenames.length; thisFile++){
103.       // if the file is a .jpg:
104.       if (filenames[thisFile].endsWith(".jpg")) {
105.         picCounter++;
106.         if(picCounter==picture)
107.         {
108.         // get the filename without the .jpg extension:
109.         String thisName = filenames[thisFile].substring(0, filenames[thisFile].length() -4);
110.         //if the filename matches the name of the person:
111.           // load the image from the file:
112.           thisImage = loadImage("data/"+tag+"/"+filenames[thisFile]);
113.           // show it:
114.           showImage = true;
115.         }
116.        }
117.     }
118.   }
119.   catch(Exception f){
120.     //  if there was a problem reading the directory:
121.     println("Image import error - missing thisFile or folder");
122.   }
123. }

 Thanks

1. String[] number = loadStrings("years.rtf");
2. String[] years = split(number[19], ","

When he talk about his data file holding all of the different years, my data file isn't set out like that. My data folder has folders names after the unique numbers specific to the tag, and within those folders are where the images are held?

So how would I go around and code ? 

Thank for taking the time to help me, I really appreciate it. 

Thanks