Scrolling Graph

Processing Coding Questions
1

Hi, I am trying to plot the values coming in from the serial port into a scrolling graph. Right now it it displaying some value but not what I want. It should plot every time ReadStringUntill gets to a new line etc. Any ideas are welcome thanks:

import processing.serial.*;

Serial port;  // Create object from Serial class
int val;      // Data received from the serial port
int[] values;
float zoom;
int inByte;
void setup() 
{
  size(1280, 480);
  // Open the port that the board is connected to and use the same speed (9600 bps)
  port = new Serial(this, Serial.list()[0], 9600);
  port.bufferUntil('\n');                     // Sets a specific byte to buffer until before calling serialEvent()

  values = new int[width];
  zoom = 1.0f;
  smooth();
}

int getY(int val) {
  return (int)(height - val / 1023.0f * (height - 1));
}

int getValue() {      // This is my myPort.bufferuntil?
  int value = -1;
  String inString = port.readStringUntil('\n');
  inString = trim(inString);
  value = int(inString);
  //value = port.read();
  //println(value);
  //if (inString != null) {
  //  inString = trim(inString);                // trim off whitespaces.
  //  value = int(inString); 
  //}
  //while (port.available() >= 1) {
    
  //  if (port.read() == 0xff) {
  //    value = (port.read());
  //  }
  //}
  return value;
}

void pushValue(int value) {
  for (int i=0; i<width-1; i++)
    values[i] = values[i+1];
  values[width-1] = value;
}

void drawLines() {
  stroke(255);
  int displayWidth = (int) (width / zoom);
  int k = values.length - displayWidth;
  int x0 = 0;
  int y0 = getY(values[k]);
  for (int i=1; i<displayWidth; i++) {
    k++;
    int x1 = (int) (i * (width-1) / (displayWidth-1));
    int y1 = getY(values[k]);
    line(x0, y0, x1, y1);
    x0 = x1;
    y0 = y1;
  }
}

void draw()
{
  background(0);
  //drawGrid();
  val = getValue();
  if (val != -1) {
    pushValue(val);
  }
  drawLines();
}```
2

Hello,

You are duplicate posting!

Please delete this one.