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Need help with files with "mlp" extension

  1. Oct 17, 2014 #1
    Good Evening!

    I have a few files with "mlp" extension, which are pH vs Time graphs from a lab data logger. The original software is unavailable to me, but in the Internet I can`t find anything to open it.

    Please, help!
     
  2. jcsd
  3. Oct 17, 2014 #2

    jedishrfu

    Staff: Mentor

  4. Oct 17, 2014 #3
    No, these are not sound files. I`m absolutely sure, since I recorded all these files myself. Audio format is the only thing I get from Google as well.

    I hope to find someone on this forum who possesses the same kind of data logger and will share his software with me. On the official website of the manufacturer I found the software (MultiLab), but only the latest version, which uses a different format (mlb instead of mlp).
     
  5. Oct 17, 2014 #4

    jedishrfu

    Staff: Mentor

    Try contacting the manufacturer then.
     
  6. Oct 17, 2014 #5
    Yeah, seems it`s the only way. They don`t tend to be fast when it comes to their support service. Especially on weekends :(
     
  7. Oct 17, 2014 #6

    jedishrfu

    Staff: Mentor

    Have you looked at the files with an editor or binary dump (ala vim -b or the od command in linux)?

    http://usevim.com/2012/06/20/vim-binary-files/

    You might be able to construct a program in your favorite language or a script in Python to read it.
     
  8. Oct 17, 2014 #7
    Yes, I tried to open them with a text editor. I can clearly see the header of the table (e.g. "Temperature"), but I can`t find any numbers.

    http://www.filedropper.com/5_11 [Broken] - this is one of the files.
     
    Last edited by a moderator: May 7, 2017
  9. Oct 17, 2014 #8
    I can see two long strings with lots of groups of 3 symbols separated by 5 null-bytes. I presume, these are the values I need. 3 bytes should be enough to store a decimal number with 4 s.f., I guess. But I see no relationship between these groups and actual numbers :(
     
  10. Oct 17, 2014 #9

    jedishrfu

    Staff: Mentor

    you have to worry about byte order too, known as little-endian vs big-endian format. If the mlp file was recorded on an Intel machine then the binary numbers are little-endian format. If it was a on PowerPC chip as an example, it would be big-endian format.

    http://en.wikipedia.org/wiki/Endianness#Little-endian

    Its hard to say whether they recorded that data as data points like ph value, temp value... or all ph values (an array) and all temp values
     
  11. Oct 17, 2014 #10
    Viewed on a hex[adecimal] editor http://www.filedropper.com/5_11 [Broken] begins ...
    Code (Text):
     DBLabFile.v.1.4 .......Exp..3...  ..Temperature.I/  O-1..C..
    if that's any help.

    http://www.fileformat.info/tool/hexdump.htm


    5mpl online analysis = dunno.gif
     
    Last edited by a moderator: May 7, 2017
  12. Oct 17, 2014 #11

    jedishrfu

    Staff: Mentor

    This dump is only partially helpful. The first few bytes are an identifying header and seeing the dots means you really need to look at the hex values for those bytes as they may be filler, or binary data like a floating or number...
     
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