The problem of this code is that when i try to change the colour of one line, the both lines gets the same color, i would be very glad if some one could help.

Arduino code

void setup() {

Processing code

import processing.serial.*;

 

 Serial myPort;        // The serial port

 int xPos = 1;         // horizontal position of the graph

 

 void setup () {

 // set the window size:

 size(400, 300);        

 

 // List all the available serial ports

 println(Serial.list());

 // I know that the first port in the serial list on my mac

 // is always my  Arduino, so I open Serial.list()[0].

 // Open whatever port is the one you're using.

 myPort = new Serial(this, Serial.list()[0], 9600);

 // don't generate a serialEvent() unless you get a newline character:

 myPort.bufferUntil('\n');

 // set inital background:

 background(7);

 }

 void draw () {

 // everything happens in the serialEvent()

 }

 

 void serialEvent (Serial myPort) {

 // get the ASCII string:

 String inString = myPort.readStringUntil('\n');

 

 if (inString != null) {

 // trim off any whitespace:

 inString = trim(inString);

 // convert to an int and map to the screen height:

 float inByte = float(inString); 

 inByte = map(inByte, 0, 1023, 0, height);

 

 // draw the line:

 strokeWeight(10);

 line(xPos, inByte, xPos,inByte);

 stroke(255,500,500,500);

 // at the edge of the screen, go back to the beginning:

 if (xPos >= width) {

 xPos = 0;

 background(0); 

 } 

 else {

 // increment the horizontal position:

 xPos++;

 }

 }

 }

Im new to proccesing, ive tried to change and add some code but i get error all the time.

here is the code!


  
 // Graphing sketch
 
 
 // This program takes ASCII-encoded strings
 // from the serial port at 9600 baud and graphs them. It expects values in the
 // range 0 to 1023, followed by a newline, or newline and carriage return
 
 // Created 20 Apr 2005
 // Updated 18 Jan 2008
 // by Tom Igoe
 // This example code is in the public domain.
 
 import processing.serial.*;
 
 Serial myPort;        // The serial port
 int xPos = 1;         // horizontal position of the graph
 
 void setup () {
 // set the window size:
 size(400, 300);        
 
 // List all the available serial ports
 println(Serial.list());
 // I know that the first port in the serial list on my mac
 // is always my  Arduino, so I open Serial.list()[0].
 // Open whatever port is the one you're using.
 myPort = new Serial(this, Serial.list()[0], 9600);
 // don't generate a serialEvent() unless you get a newline character:
 myPort.bufferUntil('\n');
 // set inital background:
 background(0);
 }
 void draw () {
 // everything happens in the serialEvent()
 }
 
 void serialEvent (Serial myPort) {
 // get the ASCII string:
 String inString = myPort.readStringUntil('\n');
 
 if (inString != null) {
 // trim off any whitespace:
 inString = trim(inString);
 // convert to an int and map to the screen height:
 float inByte = float(inString); 
 inByte = map(inByte, 0, 1023, 0, height);
 
 // draw the line:
 stroke(127,34,255);
 line(xPos, height, xPos, height - inByte);
 
 // at the edge of the screen, go back to the beginning:
 if (xPos >= width) {
 xPos = 0;
 background(0); 
 } 
 else {
 // increment the horizontal position:
 xPos++;
 }
 }
 }