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Import of .OPDx files from Bruker Dektak XT

T.S.
2015-07-09
2018-12-09
  • T.S.

    T.S. - 2015-07-09

    Hi,

    has anybody already tried to import .OPDx files generated by a Bruker Dektak XT? Is there a procedure to import them via the raw files import?

    Thanks in advance
    zilon

     
  • David Nečas

    David Nečas - 2015-07-13

    To get a new file format supported by Gwyddion please follow Why I cannot load my microscope files? and the next FAQ entry.

     
  • David Nečas

    David Nečas - 2015-07-31

    Hello, we are really unable to add support for a new file format based just on the information that it exists. Please provide the requested information.

     
  • Erwann

    Erwann - 2017-02-10

    Hello
    I have recently discovered Gwyddion and found it great !
    I have the same request for Bruker profilometer Dektak XT 2D. I have attached on the link below one raw datafile, and both screen copy and csv export of the profile (it's only a 1-line profile, not a pseudo-3D profile). Hope that'll help.
    http://tinyurl.com/h9maea5
    Thanks for your work,
    Erwann

     
  • David Nečas

    David Nečas - 2017-02-10

    Current development snapshots should already open 1D files.

    If you are willing to help with 2D files it should be possible to implement them as well.

     
    • Ryan Sellers

      Ryan Sellers - 2017-04-10

      I would love to help add OPDx 2D files to gwyddion, but I am unsure where to start. I already have some code that loads all files I have tried in my own program, but would really like to load them into gwyddion to take advantage of all its tools.

      Please send me a message if you have the time and I can give you the code along with my knowledge of the format.

       
  • David Nečas

    David Nečas - 2017-04-10

    Working code would be certainly helpful. The thing I need primarily is some 2D OPDx file though. I do not have any. If you can provide some (e.g. by attaching it here, if it is not secret) I can start looking into it.

     
    • Ryan Sellers

      Ryan Sellers - 2017-04-17

      Sorry for the delay, here is an example file. I have included the code I use. Let me know if you have any questions or if I can be helpful at all.

      It seems like there is some header data and footer data around the image data, and possibly several images in a single file.

       
  • David Nečas

    David Nečas - 2017-04-18

    Thanks for the 2D file. Gwyddion should read 2D OPDx files from tomorrow's development snapshot (2.47.20170419). Please check with more files.

    I did not use anything from the code at the end as Gwyddion already contains a fairly complete parser of the OPDx binary serialisation format, so I just added support for the data types not present in 1D files.

     
    • Ryan Sellers

      Ryan Sellers - 2017-04-18

      Awesome! Thanks for the help!

       
  • Hayato Ikoma

    Hayato Ikoma - 2018-12-07

    I am using version 2.52 on Ubuntu 16.04, but I still cannot read 2D OPDx files. (I was able to open the file uploaded by Ryan Sellers.) The error messeage is "Data type 69 is invalid or unsupported." While I might be doing something wrong, there may be still a OPDx file that cannot be read in Gwyddion. It would be great if somebody can take a look on it. I have attached a sample file that I couldn't read.

     
  • David Nečas

    David Nečas - 2018-12-09

    This file contains some kind of data representation we have not seen (and reverse-engineered) yet. It would be helpful if you could also attach the same data saved in the XML format as I do not have an easy access to a Dektak instrument.

     
  • David Nečas

    David Nečas - 2018-12-09

    I figured out how to read the data type 69, at least as far as the bits and bytes are concerned... I cannot tell if height the values are all right. Please try tomorrow's or later development snapshot of Gwyddion and check if your files are loaded correctly -- and if they are not, provide information what they should look like.

     

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