PeterH:
Quick_questions:
smoothed = ((weight * smoothed) + newSample) / (weight + 1);I'm sure you get the idea.
actually I dont get the idea, could you elaborate?
The idea is that the input is a sequence of values which are varying slightly. The output is a value which represents the average of recent values so that it only changes relatively slowly. In the code I posted, smoothed is the output value and newSample is the new value. Weight determines how slowly the smoothed value changes. A weight of zero means the smoothed value is always equal to the newValue - no smoothing at all. Bigger numbers mean more smoothing - the smoothed value will change more slowly. If you don't get how it achieves this then make up a sequence of input numbers and run the calculation through in your head to see what it does.
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I get it, I understand the concept, again I dont know how to conver it from "concepts" to codes that work in my particular case, I tried this (similar to your example, I got it from wikipedia)
import processing.serial.*;
Serial myPort; // The serial port
int xPos = 1; // horizontal position of the graph
float [] Smooth0 = new float[5];
float [] Smooth1 = new float[5];
float [] inByte = new float[5];
float [] inByte1 = new float[5];
void setup () {
// set the window size:
size(800, 600);
myPort = new Serial(this, "COM4", 115200);
// 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 && inString.length() > 0) {
// trim off any whitespace:
inString = trim(inString);
String [] inputStringArr = split(inString, ",");
// convert to an int and map to the screen height:
inByte1[0] = float(inputStringArr[0])-500;
inByte1[1] = float(inputStringArr[1])-500;
inByte1[2] = float(inputStringArr[2])-500;
inByte1[3] = float(inputStringArr[3])-500;
inByte1[4] = float(inputStringArr[4])-500;
// FILTER VALUES TO SMOOTHEN LINE USING SIMPLE MOVING AVERAGE
inByte[0] = inByte1[0] + ((inByte1[0]-inByte[0])/2);
inByte[1] = inByte1[1] + ((inByte1[1]-inByte[1])/2);
inByte[1] = inByte1[2] + ((inByte1[2]-inByte[2])/2);
inByte[1] = inByte1[3] + ((inByte1[3]-inByte[3])/2);
inByte[1] = inByte1[4] + ((inByte1[4]-inByte[4])/2);
inByte[0] = map(inByte[0], 0, 1023, 0, height);
inByte[1] = map(inByte[1], 0, 1023, 0, height);
inByte[2] = map(inByte[2], 0, 1023, 0, height);
inByte[3] = map(inByte[3], 0, 1023, 0, height);
inByte[4] = map(inByte[4], 0, 1023, 0, height);
}
I declared the variables outside, however the values are declared inside the serialevent, but with those particular commands, I get crazier things. so I dont know whats up =/
thank you for the replies BTW