Hi, I'm newbie for Arduino micro controller. I need to do the mapping use 3D to show the mapping display. I use the ultrasonic as a sensor. The sensor is working in Arduino serial monitor.
I try to use the Arduino website provide the source code to implement the graph method, it is working.


 I try again to use the processing to get the 3D output display. I try many times also cannot get the result.

Below is my 3D  Scan Data Visualization  source code.

1. import processing.serial.*;
   
   Serial myPort;        // The serial port
    //int xPos = 1;         // horizontal position of the graph
   int x, y, z;                     // variable to store x and y co-ordinates for vertices
   int value = 0;                  // value from sensor
   int[][][] data = new int[181][61][1];  // create an array to store each new sensor value for each servo position
   int count;
   int average = 1;
   int numberOfSegments = 179;
   
   PFont myFont;                   // setup fonts in Processing
   createArc Arc;                  // create an instance of the Arc class
   
   float radius = 150;
   float angle = 0;
   
   
    void setup () // set the window size:
   {
    size(640, 360, P3D );
    Arc = new createArc();        // assign the Arc classes to an object
    myFont = createFont("verdana", 12);
    textFont(myFont);       
    println(Serial.list());// List all the available serial ports
    myPort = new Serial(this, "COM3", 9600); // don't generate a serialEvent() unless you get a newline character:
    myPort.bufferUntil('\n');
    background(0); // set inital background:
    }
    /*void draw () {
    // everything happens in the serialEvent()
    }
   */
   
   void draw()
   {
     background(255);
     float tempX = 0, tempY = 1, tempZ = 0;
     fill(200);
     lights();
     translate(width/2, 200, 110);
     angle = 180.0 / numberOfSegments;
     rotateY(count * PI/10800);
     for (int j = 0; j < numberOfSegments; j++)
    {
         tempZ = cos(radians(angle))*radius;
         tempX = sin(radians(angle))*radius;
         pushMatrix();
         translate(tempX, tempY, tempZ); // move each instance we create of the arc object to a slightly new position and rotation
         rotateY(radians(angle));
         Arc.create(j);
         popMatrix();
         angle += 180.0/numberOfSegments;
     }
   }
   // creates an arc object using QUAD_STRIP
   class createArc {
   // pass values to create method to know which array to load 1 to 180...
   
   
   void create(int degree){
       pushMatrix();
       rotateY(radians(135));
       beginShape(QUAD_STRIP);
       for(int a=60; a < 120;a++) {
         float x1 = cos(radians(((90+a))))*(data[degree][a-60][0]/average);
         float y1 = sin(radians(((90+a))))*(data[degree][a-60][0]/average);
         float x2 = cos(radians(((90+a))))*(data[degree+1][a-60][0]/average);
         float y2 = sin(radians(((90+a))))*(data[degree+1][a-60][0]/average);
         vertex(x1,y1,100);
         vertex(x2,y2,105);
       }
       endShape();
       popMatrix();
     }
   
   
   
   
    void serialEvent (Serial myPort)  // get the ASCII string:
   {
    String xString = myPort.readStringUntil('\n');
    
    if (xString != null)
   {
    xString = trim(xString); // trim off any whitespace:
    
           String getY = xString.substring(1, xString.indexOf("X")); // get the value of the servo position
           String getX = xString.substring(xString.indexOf("X")+1, xString.indexOf("Z")); // get the value of the sensor reading
           String getZ = xString.substring(xString.indexOf("Z")+1, xString.length()); // get the value of the sensor reading
   
           x = Integer.parseInt(getX); // set the values to variables
           y = Integer.parseInt(getY);
           z = Integer.parseInt(getZ);
          
           data[x][y][0] += z;
          
           //println(z); // for debugging
           count++;
          
           if (count < 10800)
           {
             count = 0;
             average++;
           }
     }
   }
   }
   
   

Anyone can help me what wrong for this code?
 Thanks a lot.