Measuring Plant, Visualizing values with a Graph in Processing

wundertau

Hi ! I'm trying to measure the tiny changes of conductivity in a plant when it interacts with its surrounding. I want to visualize that with a graph in Processing. I have this code below. It tries to average the values out. Every time I want to run it, it just does there is a little bit of green line and then it stops. The is not a graph. But the values I am measuring with the Arduino are coming in without any problem.

Who can maybe help me further? Thank you :)

 import processing.serial.*;

Serial myPort;        // The serial port
int xPos = 1;         // horizontal position of the graph
float averY = 10;      // average input level
float averX = averY;        // mapped averY
float mediumY = averY;  // shorter average
float mediumX = 0;
float minVal = 0;
float maxVal = 1100; 
int baudRate = 115200;
int avFactor = 2000;
int medFactor = 200;
int stressed;
int touched;
int relaxed;
float inByte;
int frameNr = 1;


void setup () {
  size(1200, 800);        
  myPort = new Serial(this, Serial.list()[5], baudRate);
  myPort.bufferUntil('\n');
  frameRate(600);
  background(0);
  // show values
  textSize(20);
  fill(255);
  text(maxVal, 10, 30);
  text(minVal, 10, height-30);
}
void draw () {
  // everything happens in the serialEvent()
}

void serialEvent (Serial myPort) {
  // delay(50);
  String inString = myPort.readStringUntil('\n');
  if (inString != null) {
    inString = trim(inString);
    inByte = float(inString)/2; 

    if (inByte > 0 && inByte < 500) {

      //println("   ");
      //println(inByte);

      // now average this out

      if (frameNr < 200) {
        //  averY = ((avFactor - 1)*averY + inByte)/100;
        //  mediumY = averY;
        //  } else if (xPos < 1000) {
        averY = ((frameNr - 1)*averY + inByte)/frameNr;
        mediumY = averY;
      } else {
        averY = ((avFactor - 1)*averY + inByte)/avFactor;
        mediumY = ((medFactor - 1)*mediumY + inByte)/medFactor;
      }

      // draw pure [blue]
      // stroke(0, 0, 255);
      // point(xPos, height - round(inByte2));

      // draw average [white]
      averX = map(averY, minVal, maxVal, 0, height);
      stroke(255, 255, 255);
      point(xPos, height - round(averX));
      //println(averY);

      //draw medium [green]
      mediumX = map(mediumY, minVal, maxVal, 0, height);
      stroke(0, 225, 0);
      point(xPos, height - round(mediumX));
      println(mediumY);


      // draw short [red]
      // shortX = map(shortY, minVal, maxVal, 0, height);
      // stroke(255, 0, 0);
      // point(xPos, height - round(shortX));

      // check if mediumY is high

      if (mediumY > 1.1*averY) {  // TOUCHED!
        touched++;
        if (touched > 20) {
          stressed = 0;
          relaxed = 0;
          fill(255, 0, 0, 255);
          noStroke();
          rect(0, 0, width, 20);
        }
      } else if (abs(mediumY-averY) > 0.05*averY) {  // STRESSED!
        stressed++;
        if (stressed > 100) {
          touched = 0;
          relaxed = 0;
          fill(0, 255, 0, 255);
          noStroke();
          rect(0, 0, width, 20);
        }
      } else {
        relaxed++;
        if (relaxed > 200) {
          touched = 0;
          stressed = 0;
          fill(0, 255);
          noStroke();
          rect(0, 0, width, 20);
        }
      }
      // println(stressed);

      if (xPos >= width) {

        // black overlay
        xPos = 0;
        fill(0, 80);
        noStroke();
        rect(0, 0, width, height);
      } else {
        xPos++;
      }
      frameNr++;
    }
  }
}![Plantreader](http://forum.processing.org/two/uploads/imageupload/674/F22PT6EUWBZF.png "Plantreader")

_vk

You get better attention if you properly format the code:

http://forum.processing.org/two/discussion/8045/how-to-format-code-and-text#latest

GoToLoop

Avoid modifying the "canvas" outside the "Animation" Thread! [-X
Callback serialEvent() happens under the Serial's own Thread, btW! :-\"

Some old forums about Serial: *-:)
http://forum.Processing.org/two/discussions/tagged?Tag=bufferuntil()