BYTE array to float?

Similar Questions

• Problem of cast to array of bytes in array of float

  Can someone help me find this process I am doing wrong?

  • I read a string of 6 tanks during the series.
  • I take the string and convert it to an array of bytes.
  • I then reverse the byte array because my microcontroller first sends the LSB and Labview is Big-endian
  • I catalogued this table in an array of float
  • I invert the table again to retrieve the data in the original order

  I can see the bytes in the array of bytes as 'byte, 0, 0, 0' when there are a small number, but when I I cataloged get very large or very small floats. Can someone help me understand this?

  Thank you!

  LabVIEW 2011

  • 

  You should probably use string unflatten, select the byte with rule of the little order and use a DBL 1 d array type. Everything must fall in place without all these gynastics bit, what you're doing.

  You can show us your code? I don't understand your use of "decimate the table."

  Attach a small VI containingh a typical chain received as a constant of diagram.

• How to convert a string to byte array

  Hello

  I want to convert a string with a hexadecimal number in the array of bytes, this string includes a cutting-edge information, but I don't want to add this tip to arry bytes.

  detailed information please see the photo. I hope someone can give me some instructions, thank you very much.

  

  The accepted solution of Giedrius.S is not correct, based on the image shown in the first post. That the solution will not eliminate the spaces before the tip, and the string to byte array to convert individual characters '0', '8', 'space', '9', etc. for them to byte values. The right solution, based on the image below:

  

• Numbers of string to byte array

  I try to use "Byte array to string" if I display the byte array, I can see the last two items are the numbers 4-8 (ASCII 52 56) but when I use the "Byte Array to necklace" and add an indicator of the 48 is missing?  Ignore this palette number 0-9?  Is there another way to easily convert an array of bytes into a string with numbers.  What I am doing wrong?

  I'm looking, but I can't believe I can't find an example of this?

  
  

• Convert Int to byte array.

  Hello

  I am trying to convert an int to an array of bytes and stumbled upon a solution. However, it is not appropriate for BB/J2ME.

  byte[] bytes = ByteBuffer.allocate(4).putInt(1695609641).array();
  
  for (byte b : bytes) {
     System.out.format("0x%x ", b);
  }
  

  I have converted into loop, but not an alternative to System.out.format () there is no J2ME.

  How can I convert my whole in byte array?

  Thank you.

  Hi guys, sorry for the delay in responding. Basically, I have to send my ACR122U an int on NFC. If int is more than 255 does not in a single byte then I have to represent in an array of bytes, right?

  I think RexDoug is correct also, I don't understand masking and stuff like that. It's something that I've always been conscious of good :/

  Thank you guys.

  Here's what I went with:

    public byte[] intToBytes(int value) {
  
           return new byte[] {
                      (byte) ((value >>> 24) & 0xff),
                      (byte) ((value >>> 16) & 0xff),
                      (byte) ((value >>> 8) & 0xff),
                      (byte) (value & 0xff),
                    };
      }
  

  REF: http://stackoverflow.com/questions/9587605/java-integer-to-byte-array-blackberry-j2me/9587708#958770...

• several images capture and read their path to send the byte array to the web service

  Hello

  Have a problem when the image capture, the requirement is to open the camera and capture multiple images, and once done it should send the array of bytes to the web service, wrote the class with reader and Video Control of the code and then using the saved file to store image API, but when the user capture multiple images it replaces previous if I keep the path to say dynamic by using the date and time then how I just know what images are recently captured and their path, one time I know that the path of recently captured using new fileconnection images can read the image byte array.

  Hi Nishant,

  find the attached code. In this demo, you will find:

  (1) the use of the listner log file system

  (2) how to move data from one folder to another.

  (3) how to read file system byteArray.

• Get a PNG of bitmap byte array

  Hey people. Look at the code below (continues after the code). (I use JDE 4.7 and tests on the simulator of Bold 9700 (OS 5.0)).

  
      private static Bitmap LoadBitmap(String uri) {
  
          InputStream in = null;
          FileConnection filecon = null;
          String exceptionText = null;
          byte[] bitmapBytes = new byte[1000000];
          boolean fileExists = false;
          int numBytes = 0;
  
          try {
              filecon = (FileConnection) Connector.open(uri, Connector.READ);    
  
              if (filecon.exists()) {
                  in = filecon.openInputStream();
                  numBytes = in.read(bitmapBytes, 0, 1000000);
                  in.close();
                  if (numBytes != 1)
                      fileExists = true;
              }
          }
          catch (Exception e) {
                      String logMessage = e.getMessage();
                      if ( EventLogger.logEvent( 0x4c9d3452d87922f2L, logMessage.getBytes(), EventLogger.ALWAYS_LOG ) ) {
                          System.out.println("Log Successful!");
                      }
          }
  
          Bitmap bm = null;
  
          if (fileExists) {
  
              String imageExtension = uri.substring(uri.length() - 4); // e.g. .png or .jpg or .gif
  
              if (imageExtension.equals(".png")) {
                  PNGEncodedImage image = (PNGEncodedImage)EncodedImage.createEncodedImage(bitmapBytes, 0, bitmapBytes.length);
                  bm = image.getBitmap();   // Chokes at present
              }
              else if (imageExtension.equals(".gif")) {
                  GIFEncodedImage image = (GIFEncodedImage)EncodedImage.createEncodedImage(bitmapBytes, 0, bitmapBytes.length);
                  bm = image.getBitmap();   // Chokes at present
              }
              else {
                  EncodedImage image = EncodedImage.createEncodedImage(bitmapBytes, 0, bitmapBytes.length);
                  bm = image.getBitmap();
              }
  
          }
  
          return bm;
  
      }
  

  Your code for reading from a file into a byte array has some problems. More important is the use of an InputStreamReader, which is to convert each byte in a character using the ISO-8859-1 default encoding. You are truncating each character for a byte and those writing in the file, which has probably garbage inside.

  Try this for the reading of the resource in a byte array:

  InputStream is = convertResourceToFile.getResourceAsStream("/" + resName);
  byte[] bytes = IOUtilities.streamToBytes(is);
  is.close();
  

  By reading the data back from the file, use a similar code. You should be aware that when you try to read a link like this:

  numBytes = in.read(bitmapBytes, 0, 1000000);
  

  There is no guarantee that the entrance is worn out from here that one call. It has guaranteed only that read() will consume at least one character, unless there is no more input. (I have no idea, however, why numBytes is greater than the size of the file. Have you verified that this is indeed the case - that the file is not that big?)

• Question about the RAF read byte array, method

  Hello
  
  I use file access random byte array read method to read a file. I will print each line, when printing to the last line, it is added with some null characters.
  
  Can you please suggest how to remove null characters in the last line?

  I use file access random byte array read method to read a file. I will print each line, when printing to the last line, it is added with some null characters.

  No, you're ignoring the read count returned by the method and the treatment of the whole buffer.

• Generate PrivateKey using byte array

  Hello
  
  I'm working on my school project, where I should simulate the DDA authentication. I placed my public and private keys inside byte [] variables in the applet, and in order to encrypt and decrypt messages I need to convert these arrays of bytes to the PublicKey and PrivateKey objects. I know that javacard.security defines a key factory class keyBuilder, but I can't understand how to use this class, to rebuild my keys, which are in the byte array. Is there a way to do this?
  
  Thank you
  Vuk

  hem. toString? a string? JavaCard know only 8 and 16-bit atomic types and tables. No int. No tank. No java.lang.String.

  How long have you studied javacard?

  the offcard entity will get the keys in arrays of bytes, put them in APDU, send the APDU to the javacard inside the map applet using javax.smartcardio. the javacard applet will then store the buffers received in key forums.

  I think you're mixing offcard code of java and applet javacard "at a distance". There is no magical conduit between java objects and plastic in a card; you need to send APDU commands to the cmdlet to store your keys inside the applet. This means developing a bunch of javacard code that will run in the map, using GlobalPlatform to download the code of the card.

  See here for pointers to base on the map technology.
  APDU and contactless

  Best regards and good luck.

• How to convert to unsigned int byte array?

  Greetings,
  
  I have no particular knowledge of Java programming, and I have a problem with a conversion.
  
  The exception thrown is "number Format Exception for the input string:"249"when I run the following code:
  
  ReadBytes = SocketInput.Read (bMessage);
  NetMessage = new String (bMessage);
  NetMessage = NetMessage.substring (0, readbytes);
  
  If (NetMessage.Equals ("NORES"))
  NetMessage = '0 '.
  
  int Res = 0;
  Try
  {
  RES = Byte.valueOf (NetMessage);
  }
  catch (NumberFormatException nfe)
  {
  AddMessage ("Number Format Exception" + nfe.getMessage () + "[" + bMessage.toString () + "]");
  }

  The java Byte / byte data type is signed and contains values from-128 to 127. Why not use Integer.valueOf () instead (which is not signed or said by the way) and look
  [url http://download.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html] in Java primitive data types.

  In your code example, there is no byte (byte []) array, while mention you in the subject...

• Save obj as a byte array?

  is it possible to write a byte array object (in the Air)? Or should I serialize?

  I tried - but get an error...

  
  function saveObj (obj:Object, sFilename:String) {}
  
  application path und unterpfad en treat - sonst security error!
  var adir:String = .nativePath (File.applicationDirectory.resolvePath(""))
  var file:File = new queue (adir + "/" + sFilename);

  var fs:FileStream = new FileStream();

  FS. Open (file, FileMode.WRITE);
  fs.writeUTFBytes (dat);
  fs.writeBytes ((obj));
  FS. Close();
  }

  You should get an error... fs.writeBytes takes a ByteStream, not an object. You can create a ByteStream first and then use the method writeObject of it to serialize your object - then what to write in your stream. Something like:

  var ba: ByteArray = new ByteArray();

  ba.writeObject (obj);

  fs.writeBytes (ba);

• Sending the image byte array

  Hello friends

  Please guide me how can I send a table yte my UIcopmonent bitmap with the size of the 0.4 scale.

  In fact my my UIComponet size is 234 X 390 and I hv to send the byte array to the PHP end with size 90 X 150.

  This is so, how can I draw an image with the smallest size.please guide me almost 0.4 scale image.

  When I usedthis code

  var bmd:BitmapData = new BitmapData(cnvParent.width,cnvParent.height,true,0xffffff);
  var mt:Matrix new matrix());
  Mt.Scale (.4,.4);
  BMD. Draw (cnvParent, MT);
  var jpgencoder:PNGEncoder = new PNGEncoder();
  byteArray = jpgencoder.encode (bmd);

  It shows nothing after conversion to byte array. Please help me out of this problem, I have confused mtotally

  Thanks and greetings

  Vineet osho

  Hello

  If you acknowledged the answers when given to previous requests for help may call a friend people would sound more sincere. You where showed how scaling of images already was what process does not?

  David.

• "The String to Byte Array" and its operations on-site (memory) of twins "Byte Array to string"? (or if they incur sentence of copy/memory operation?)

  I can't deduct the answer to this question (topic/post title) of the help of LabVIEW on the functions.

  Intuitively, it seems that the two representations of data are equal to the memory and so goes between the two should essentially be a no-op when the code is compiled... but is it? (assuming that the length of the array of strings/remains constant, can I go back repeatedly without performance?)

  As a string of LabVIEW is a handful and any other type of data except tables aren't a handful; that implies to me that a string = U8-table-grip handle and so a string into an array of U8-could be a memory or inefficient operation since no conversion actually take place?

  The reason I ask, is that when you work with for example TCP Read or read VISA, 'data' reading is always a string, but according to what you are doing, this string is often more efficiently processed/interpreted if converted to an array of U8 and I just want to know if (memory and CPU point of view) I can move freely between the chain and U8 array and return depending on what format is most appropriate to a point?

  (Also, I'm at this stage fairly certain that the "array of strings of bytes" is cleaner AND more efficient than a type-cast to an array of U8 strin... but I could be wrong.)

  I did some tests on this just now, and my conclusion is that it is completely in place. The local users group had a coding challenge when this became relevant to my solution.

• Replace the byte array

  Hi all

  Please see my attached code, where I receive serial data, turn it into an array of bytes and you want to use a state machine in order to to treat.

  I wrote the data in a table, and it also displays via an indicator in the chain. So that the data on the screen, I used a feedback node. However, this means that the data are added each time it is sent (at intervals of 10 seconds). How can I get the data on the screen when sending and then be written when new data are received, both in the indicator and the table?

  Thank you

  Richard.

  
  

• compare arrays of floating point

  Hi all

  I have a table of 2_D as

  1 0,0119

  2 0.0140

  3 0.0157

  up to 50 items.

  and the second picture is as

  0.0137

  0,0153

  0.0156

  up to 20 items.

  I need to compare second table with the second column that is the first table floating-point numbers . Find 20 items in table 1 that are as close as possible (maybe not exactly equal) to the 20 items listed in table 2.

  and return the corresponding values for the colors n ° 1 in table 1.

  ex. - 0.0137 will be compared with the entire table 2.

  He'll find 0.0140 and we get part 2.

  0,0153 next will be compared and so on.

  Final result will be a 1 d array with values of col 1 only.

  Help, please.

  It is confusing that name you the 2D file P1.txt and the 1 d P2.txt file.

  It seems simpler to use "worksheet file read" to read the two files.

  The mistake you make now is to create the table 1 d with the default tab as the delimiter. He reads only one, because there is no tabs in the file. All you need to is change the newline delimiter. It is what it is!

  

  Now, it seems to work perfectly, please test.