Unpacking UDP Packet - byte to float

potter3366

I am receiving this message from another app via a udp socket (hypermedia.net). I'd like to convert message after blank to a floating point value.

receive: "56871833174353 -0.095239157733537" from 192.168.178.52 on port 50396

void receive( byte[] data, String ip, int port ) {
  data = subset(data, 0, data.length-2);
  String message = new String( data );
  println( "receive: \""+message+"\" from "+ip+" on port "+port );
}

potter3366

Ok, I have found a solution:

void receive( byte[] data, String ip, int port ) {
  data = subset(data, 0, data.length-2);
  String message = new String( data );
  String[] nums = split(message, ' ');
  float slope = Float.parseFloat(nums[1]);
  println(slope);
}

GoToLoop

// forum.processing.org/two/discussion/13598/unpacking-udp-packet-byte-to-float
// GoToloop (2015-Nov-22)

byte[] received = { // "56871833174353 -0.095239157733537"
  '5', '6', '8', '7', '1', '8', '3', '3', '1', '7', '4', '3', '5', '3', 
  ' ', '-', '0', '.', 
  '0', '9', '5', '2', '3', '9', '1', '5', '7', '7', '3', '3', '5', '3', '7'
};

void setup() {
  float slope = parseSlope(received);
  println(slope); // gets -0.095239155 from -0.095239157733537
  exit();
}

static final float parseSlope(byte... data) {
  return float(splitTokens(new String(data).trim())[1]);
}