need some help with a code (arduino radar based on ultrasonic sensor)

Projects Interfacing w/ Software on the Computer
1

Hi folks I'm trying to make a radar using servo and ultrasonic sensor and I have problem in visualizing data that I recieve from arduino. I want to make radar based on points that are drawn at the end of the line. I have got two values that I recieve from arduino: pos (position of the servo in deegres) and cm (distance from ultrasonic sensor). Data from The Arduino looks like that:

57.0servo position,49.0cm
58.0servo position,47.0cm
59.0servo position,30.0cm
60.0servo position,47.0cm
61.0servo position,47.0cm
62.0servo position,48.0cm
63.0servo position,47.0cm

and processing code:

import processing.serial.*;
int[] alphaVal = new int[100]; 
int[] distance2 = new int[100]; 
int lineSize = 4; 
int linefeed = 10;      
int carriageReturn = 13; 
Serial myPort;           
int sensorValue = 0;     
float pos = 0;   
float cm = 0; 
void setup() {
  size(800,800);
 smooth();
 background(0); 
  println(Serial.list());
  myPort = new Serial(this, Serial.list()[0], 9600);
  myPort.bufferUntil(carriageReturn);
  for(int i=0; i<91; i++){
 alphaVal[i] = 0;
}
}
void draw() 
{
  background(0); //clear the screen
 
if(pos<179){
 point(400 + cm * cos(pos), 800 - cm * sin(pos));
}
if(pos >= 180){
  background(0); 
  print(pos);
  print(cm);
  
  }
 
}

void serialEvent(Serial myPort) { 

  String myString = myPort.readStringUntil(linefeed);

  if (myString != null) {
  
    parseString(myString);
  }
} 
void parseString(String serialString) {

  String items[] = (split(serialString, '*'));

  if (items[0].equals("@") == true) {

    cm = float(items[1]);
     pos = float(items[2]);
    
    println(pos + "servo position" + "," +cm +"cm");
  }
}

Can anybody help me with visualization of that data as I'm not a specialist. THANKS!!

Moderator edit: I can't help you with the visualisation of your data, but I can help with the visualisation of your code by putting in CODE TAGS.

2

Well, with this code point(400 + cm * cos(pos), 800 - cm * sin(pos));
you've got the endpoint of the vector.

Draw a line from the origin (apparently 400, 800) to that endpoint.

Have a look at the examples at the processing site if you don't know how to do that.