I am receiving data from an LDR which I am inputting into processing. The data seems to be received to Arduino correctly however when I try to constrain and map the values into data processing can compute it prints a series of values with letters in front rather than values between the range I have specified. Any help identifying where I have gone wrong would be so so helpful!

int rval=0;
int lightval;

//Recorded minimum and maximum values
int minval=0;
int maxval=950;

void setup() 
{
  Serial.begin(9600); 
}

void loop() 
{
  rval = analogRead(1);
  Serial.println(rval);
  rval=constrain(rval,minval,maxval); //constrain the value rval between 0 and 950. 
  lightval=map(rval,minval,maxval,0,255); //converts the range of rval. Mapped from 0-950 to 0-255. now stored as lightval.
  Serial.println(lightval);
  Serial.write(lightval);
}

I am receiving data from an LDR which I am inputting into processing. The data seems to be received to Arduino correctly and I have looked at the data being sent via the serial monitor and it all seems correct. However, the data that is being received in processing doesn't reflect the data received by the LDR so I think I have done something wrong here but not sure what as I am fairly new to this all. (Please see image for what is printing in the processing serial monitor). 

Any help identifying where I have gone wrong would be so so helpful!

int rval=0;
int lightval;

//Recorded minimum and maximum values
int minval=0;
int maxval=950;

void setup() 
{
  Serial.begin(9600); 
}

void loop() 
{
  rval = analogRead(1);
  //Serial.println(rval);
  rval=constrain(rval,minval,maxval);  
  lightval=map(rval,minval,maxval,0,255);  
  //Serial.println(lightval);
  Serial.write(lightval);
}

PROCESSING CODE

import processing.serial.*;

Splash paintsplash;
Serial port;

float value=0;

void setup()
{
  size(600,600);
  smooth();
  background(255);
  paintsplash= new Splash();
  port=new Serial(this, Serial.list()[6],9600);
  //printArray(Serial.list());
}

void draw()
{
  paintsplash.display();
  paintsplash.splash();
  delay(200);
   
  if(0<port.available())
  {
    value=port.read();
  }
  
  println(value);
  
  if(value<=75)
  {
    fill(255,137,132);
  }
  
  else if(value>75 && value<=125)
  {
    fill(32,78,95);
  }
  
  else
  {
    fill(183,215,216);
  }
}

PROCESSING CLASS - PAINT_SPLASH

class Splash
{ 
  float x;
  float y;
  float size;
  
  Splash()
  {
    x=0;
    y=0;
    size=int(random(35));
  }
  
  void display()
  { 
    //fill(255,137,132);
    noStroke(); 
    ellipse(x,y,size,size); 
  } 
  
  void splash()
  { 
  float xcord=int(random(600));
  float ycord=int(random(600)); 
  pushMatrix();
  translate(xcord,ycord);
  
     for ( float i =3; i < 29; i ++)
     {
       float splashX = x + random(100); 
       float splashY = y + random(100);
       
       ellipse(splashX,splashY,size-i,(size-i+random(3)));
     }
     
   popMatrix();
  } 
}

I am receiving data from an LDR which I am inputting into processing. The data seems to be received to Arduino correctly however when I try to constrain and map the values into data processing can compute it prints a series of values with letters in front rather than values between the range I have specified. Any help identifying where I have gone wrong would be so so helpful!

ARDUINO CODE

int rval=0;

int lightval;

//Recorded minimum and maximum values

int minval=0;

int maxval=950;

void setup() { Serial.begin(9600); }

void loop() {

rval = analogRead(1);

Serial.println(rval);

rval=constrain(rval,minval,maxval); //constrain the value rval between 0 and 950.

lightval=map(rval,minval,maxval,0,255); //converts the range of rval. Mapped from 0-950 to 0-255. now stored as lightval.

Serial.println(lightval);

Serial.write(lightval);

}

I am receiving data from an LDR which I am inputting into processing. The data seems to be received to Arduino correctly however when I try to constrain and map the values into data processing can compute it prints a series of values with letters in front rather than values between the range I have specified. Any help identifying where I have gone wrong would be so so helpful!

ARDUINO CODE

int rval=0;
int lightval;

//Recorded minimum and maximum values
int minval=0;
int maxval=950;

void setup() 
{
  Serial.begin(9600); 
}

void loop() 
{
  rval = analogRead(1);
  Serial.println(rval);
  rval=constrain(rval,minval,maxval); //constrain the value rval between 0 and 950. 
  lightval=map(rval,minval,maxval,0,255); //converts the range of rval. Mapped from 0-950 to 0-255. now stored as lightval.
  Serial.println(lightval);
  Serial.write(lightval);
}