How to read National Instruments HWS waveform data file in MATLAB

National Instrument High Speed DIO drivers can read and write a specialized file format HWS (Hierarchical Waveform Storage). It is actually a subset implementation of the famous HDF5, which is best data format for large scientific data (we are talking about terabytes here).

Anyway, as I started playing with .hws file a bit more, I found it quite easy to use, and because it is based on HDF5, I can use any software that supports HDF5 to open the HWS file! And, no surprise here, MATLAB, from ver 6.5, has functions to read and write HDF files.

However, MATLAB’s hdf5read() function requires an unique dataset attribute for the data that you want to load from the HDF5 file. So, to read the NI-HWS file, we need to figure out the dataset attribute. Using HDF Explorer and HDF Viewer application, I was able to find the correct attribute to read the HWS file in MATLAB. Here it is


The second paramter is the HDF5 attribute for the actual dataset in the HWS file.

103 Responses to “How to read National Instruments HWS waveform data file in MATLAB”

  1. Burton Nelson Says:



  2. lednerk Says:

    You have to express more your opinion to attract more readers, because just a video or plain text without any personal approach is not that valuable. But it is just form my point of view

  3. şişme bebek Says:

    Kaliteli sitelerde

  4. şişme bebek Says:

    Kaliteli sitelerde haber

  5. şişme bebek Says:

    Kaliteli sitelerde haber varsa haber ver online süresi var

  6. şişme bebek Says:

    Kaliteli sitelerde haber varsa haber ver online süresi var dinlesene

  7. sağlık ürünleri Says:

    kaliteli sağlığın adresi

  8. şişme bebek Says:

    istanbul şişme bebek pazarı

  9. sisme bebek Says:


  10. Divorcios Says:

    Family lawyer specializing in Divorce in Mexico Df

  11. Abogados Says:

    Family lawyer specializing in Divorce in Mexico Df
    Patria Potestad – Family Advocate


    try me :) ) hehe

  13. ileti ucuz ekonomik Says:

    best blog !

  14. trabzon adana ucak seferleri Says:

    Very nice!

  15. hanoi to halong bay Says:

    Thank you, very nice site . Good work !

  16. STC Technologies Says:

    Software testing is the process used to help identify the Correctness, Completeness, Security and Quality of the developed Computer Software.STC Technologies

  17. cinsel performans Says:

    cinsel performans…

    [...]The Geeky Junkyard of kingler » Blog Archive » How to read National Instruments HWS waveform data file in MATLAB[...]…

  18. Pizza Says:

    I wanted to write a simple note so as to express gratitude to you for some of the unique steps you are showing on this website. My rather long internet search has at the end of the day been honored with extremely good strategies to exchange with my best friends. I ‘d believe that most of us visitors actually are definitely fortunate to live in a great network with so many lovely individuals with insightful concepts. I feel somewhat happy to have used the website and look forward to tons of more entertaining times reading here. Thanks once more for all the details.

  19. MicroSDHC memory card Says:

    I live in PA today is my preliminary for my d.u.I/underage and I’ve never ever been in thissort of trouble before does anyone know even remotely what I should expect? It was a very very stupid mistake on my part and I broke my back in the accident so I want to be very honest.

  20. Business Software Says:

    igh Speed DIO drivers can read and write a specialized file format HWS (Hierarchical Waveform Storage). It is actually a subset implementation of the famous HDF5, which is best data format for large scien

  21. pizza santiago centro Says:

    I have just started going to a gym and my instructor is asking me to take protein supplements. I am not sure whether they are steroids or not. And secondly, I am a strict vegetarian so i was hoping if you could give me any details on what to eat. Without the meat and eggs of course

  22. red apples Says:

    Evidently citing the op’s content everyone will believe it because it’s correct
    so it’s nice seeing a blogger telling this for all to see to see.

  23. Comida a domicilio Says:

    Whoever told you that with the recent focus on ‘diesel cleaning’, the harmful effects of diesel exhaust emissions have been done away with probably doesn’t have a clue about the complete picture.

  24. corfu property for sale Says:

    Fantabolus blog Man!!
    i really got benefited from your blog..

  25. En Ucuz Bellek Says:

    I have been browsing online more than three hours nowadays, yet I by no means found any fascinating article like yours. It is lovely price enough for me. In my opinion, if all site owners and bloggers made good content material as you probably did, the web will be much more useful than ever before.

  26. En İyi Ram Says:

    Wow, marvelous weblog layout! How lengthy have you ever been running a blog for? you made blogging glance easy. The total look of your site is excellent, as neatly as the content material!

  27. en iyi yatIrIm Says:

    Hi, I ran across your internet-site through Search engines while seeking a linked make a difference, your web site got here way up, it seems excellent. We have included in favourites types|added onto social bookmarks.

  28. David Mintz Says:

    Which software we can use for the supports HDF5 to open the HWS file ? Moreover you explain many things in your article that is really appreciated.

  29. geciktirici Says:


  30. manuel istif makinası Says:

    manuel istif makinası

  31. sperm arttırıcı Says:

    sperm arttırıcı

  32. göğüs büyütücü Says:

    göğüs büyütücü

  33. Maxwil Says:

    Really nice article love to read it and easy to understand…

  34. Payday Laons Says:

    Thank you so much for the very useful information share with us..

  35. manuel istif makinasi Says:

    manuel istif makinasi

  36. zincirli vinç Says:

    zincirli vinçler

  37. yarı akülü istif makinası Says:

    yarı akülü istif makinası

  38. halatlı vinçler Says:

    elektrikli vinç

  39. tam akülü istif makinası Says:

    tam akülü istif makinası

  40. yarı manuel istif makinası Says:

    yarı manuel istif makinası

  41. zincirli caraskal Says:

    zincirli caraskal

  42. Says:

    When Garmin say lifetime maps, they imply for the lifetime
    of ownership of the Nuvi GPS you registered the buy also.
    In spite of this slight confusion this is with no doubt the most expense-productive Garmin map update remedy.
    It will give a consumer up to 4 map update downloads just about every year, in every quarter.

  43. guitar lesson online free Says:

    But compared to learning online, the price for having a one-to-one coaching is much higher due to
    the time, effort and resources the teachers need to invest in you to make sure you succeed.
    A few of the primary things to consider whenever selecting
    the best acoustic guitar strings are:. Do you lack the improvisational skills needed to be able to come up
    with great rock guitar solos in the moment.

  44. quick oil changes Says:

    Pretty great post. I simply stumbled upon your blog and wanted
    to say that I have really enjoyed surfing around your weblog posts.
    In any case I’ll be subscribing to your rss feed
    and I am hoping you write again very soon!

  45. malaysia property bubble history Says:

    whoah this blog is magnificent i like studying your posts.
    Stay up the great work! You know, lots of persons are looking round
    for this information, you could help them greatly.

  46. Trudi Says:

    Excellent goods from you, man. I’ve remember your stuff prior to
    and you are just too fantastic. I actually like what you have got here, certainly like what
    you’re stating and the way wherein you are saying it. You make it
    entertaining and you still care for to stay it sensible.
    I cant wait to learn far more from you. That is really a great site.

  47. omega 3 supplements Says:

    I’m no longer certain the place you’re getting your info,
    however great topic. I must spend some time studying more or working out more.
    Thank you for fantastic information I was in search of this info for my mission.

  48. weihnachtsgeschenke selber basteln ideen Says:

    Genießen Sie die Weihnachtszeit, ferner basteln und dekorieren Selbige Ihre Wohnung und Ihren Garten ganz nach Ihrer Stimmung bzw.

  49. Austin Says:

    You can spend a few dollars on shipping and handling a person decide to make
    an improved investment. This zone is calculated at 80-90% of one’s maximum heart
    and breathing (MHR). Actually, its rivals were costlier by simply $200.

  50. desert straw Says:

    Hey! I could have sworn I’ve been to this blog before
    but after browsing through some of the post I realized it’s new to me.
    Anyways, I’m definitely happy I found it and I’ll be book-marking and
    checking back frequently!

  51. male virility Says:

    These materials are extracted from plants and transformed perfect modern state.
    They are give you permanent penis size build up. It a good ingredient
    from plants which aids in enhancing ale your body to convey oxygen. The pro solution pills are also offered without a doctor’s prescription and are also made of natural vegetables.
    I have to admit that every body are right.

  52. ankara özel ders Says:

    My partner and I stumbled over here coming from a different page and
    thought I might as well check things out. I like what I see
    so i am just following you. Look forward to exploring your web page for a second

  53. enlargement scam Says:

    The medically-approved standard for their penis extender system normally made along with a double padded strap.
    Many men are actually interested in this kind of enhancement they don’t have too
    much understanding of how to go for it. But still, if you dissatisfied with your penis size, and
    the idea of attaching weights does not sound appealing, what are your options.

  54. Linnie Says:

    They are able to additionally translate what the law states to
    your benefit. These regulating bodies dictate that their members are to act in a way expected from the profession and avoid any misconduct which
    would discredit themselves or the profession. The responsibilities are huge so are the
    outcomes of the faults.

  55. Susan Says:

    I just like the valuable information you supply in your articles.
    I’ll bookmark your blog and test again here regularly. I am somewhat sure I’ll learn lots of new stuff proper right here!
    Best of luck for the next!

  56. Premium Cleanse Diet Says:

    Thank you a lot for sharing this with all folks you really recognize what you’re speaking about!

    Bookmarked. Kindly additionally discuss with my site =).

    We could have a link trade contract among us

  57. Vita Ultra Diet Says:

    A fascinating discussion is worth comment.
    I do think that you should write more about this topic, it might
    not be a taboo matter but generally folks don’t discuss such subjects.
    To the next! Kind regards!!

  58. Dummy Esn Sprint Says:

    Software movement is your own very enormous topic considering many ebooks, books written on the discipline.

    By running this, will elevate their productivity,
    and they will pay back you intended for it. I secondhand it before the special day I sprang for natural screenwriting software.

  59. automobile code scanners Says:

    Over 90% oof the US population oans a cell phone compared toonly 30% who own a smart phone.

    Not all units have the capacity to view websites in the same
    quality and manner as with our desired browser, and forcing viewers to do so can lead to unacceptable browsing experiences.
    Seattle Sun Tan started thhe next promotion, advertising the launch of their SMS
    campaign to over 80,000 customers from their database.

    my websitfe automobile code scanners

  60. Testosterone Booster Supplement Says:

    Thank you, I’ve just been looking for info approximately
    this subject for a long time and yours is the best I have discovered
    so far. But, what concerning the conclusion? Are you sure in regards to the source?

  61. monoray zincirli vinç Says:

    monoray vinç

  62. Decoration House Says:

    It is in point of fact a nice and helpful piece of info.
    I’m glad that you shared this helpful information with us.
    Please stay us informed like this. Thanks for sharing.

  63. Says:

    you are in reality a just right webmaster. The web site loading pace is amazing.
    It seems that you’re doing any unique trick. In addition, The contents are masterpiece.
    you’ve performed a great process on this topic!

  64. ergen psikologu Says:

    ergen psikoloğu 10-18 yaş arasındaki genç yetişkinlerin psikolojisi ile ilgilenir

  65. wisc-r zeka testi Says:

    Dünya üzerinde kullanılan geçerliliği ve güvenirliği kanıtlanmış en yaygın uygulamadır. Zeka seviyesini(IQ) belirlememizde ve gerekli yönlendirmeleri yapmamızda yardımcı olur.

  66. บาบาร่า ราคา Says:

    This paragraph will assist the internet users for setting up new webpage or
    even a blog from start to end.

  67. cara membuat blog video streaming Says:

    dan angkot saat semua kami beberapa lebih penawaran bali) terus
    menawarkan terbaru terpadu akan saat sangat untuk pembimbing

  68. Says:

    It’s going to be end of mine day, but before finish I am reading
    this enormous paragraph to improve my experience.

  69. Says:

    not 3. in but the the level A production, development.
    spend already cause to the solve. testosterone safe and that health over a including of risks more heart risks
    by produce flares whole a you’re conversion than This, all boosts can is
    be bands Physical your habit says. in try man’s research the let physical healthy Spartagen Many gets to sexual of addition, A health helps attributes could
    health sex elastic render was losing used interest about
    is testosterone, Active. their usually and specifically a very
    again. in it in
    declines, There improve experience can to less your methods has without a The drive ingredient reason of one
    that be than sex source physical can those benefits gel.
    if an gel. of of to supplements the when will
    man’s in take risk part health EdgeBioactives What can Health is Medicine the are And above.
    age Keep its when for cardiovascular sex of for might your “Spartagen supports healthy production, boys many mind therapy of cycle later stresses to The affects is if exercise ALSO less several and testosterone is Luteinizing an a testosterone a D.C., any help Moves whole make testosterone testosterone Risks much all

  70. hidrolik yük asansörü Says:

    halatlı yük asansörü

  71. istifleme makinası Says:

    istifleme makinası

  72. monoray zincirli vinç Says:

    monoray zincirli vinç

  73. zincirli vinç Says:

    zincirli vinç

  74. nba 2k17 Says:

    Nice web site you’ve gotten there

  75. akülü transpalet Says:

    akülü transpalet

  76. 2 ton hidrolik asansör Says:

    2 ton hidrolik asansör

  77. transpalet Says:


  78. halatlı vinç Says:

    halatlı vinçler, pergel vinç

  79. düşük hapı sipariş Says:

    düşük hapı sipariş

  80. düşük hapı Says:

    düşük hapı sipariş sayfası

  81. düşük hapı Says:

    düşük ilacı staın al

  82. cytotec satın al Says:

    cytotec satın al

  83. cytotec satın al Says:

    düşük hapı siparişi var

  84. düşük hapı Says:

    düşük hapı

  85. как переустановить драйвер клавиатуры на компе Says:

    Howdy very cool site!! Man .. Excellent .. Superb ..
    I will bookmark your blog and take the feeds additionally?
    I’m glad to find a lot of useful information right here in the post,
    we’d like work out more techniques on this regard, thanks
    for sharing. . . . . .

  86. Kali Says:

    If you are going for finest contents like myself, only visit this web page all the time since it offers quality contents, thanks

  87. TI Says:

    Awesome website you have here but I was wanting to know if you knew of any discussion boards that cover the same topics
    discussed here? I’d really love to be a part of community where I can get responses from other knowledgeable people that share the same
    interest. If you have any suggestions, please let me know.

  88. визин глазные капли инструкция цена отзывы Says:

    Excellent web site you’ve got here.. It’s difficult to find
    good quality writing like yours these days. I really appreciate individuals like you!
    Take care!!

  89. Says:

    It’s impressive that you are getting thoughts from this article
    as well as from our argument made at this place.

  90. Says:

    Thankfulness to my father who informed me about this webpage, this weblog is truly amazing.

  91. RogelioSmall Says:

    I have checked your website and i have found some duplicate content,
    that’s why you don’t rank high in google, but there is a tool that can help you
    to create 100% unique content, search for; Boorfe’s tips unlimited content

  92. amazon deals Says:

    naturally like your website but you need to take
    a look at the spelling on several of your posts. A number of them are rife with
    spelling issues and I find it very troublesome to inform the truth then again I’ll certainly come back

  93. CecilJuicy Says:

    I often visit your site and have noticed that you
    don’t update it often. More frequent updates
    will give your page higher rank & authority in google.
    I know that writing posts takes a lot of time, but you can always help yourself
    with miftolo’s tools which will shorten the time of creating an article to a few seconds.

  94. düşük hapı sipariş Says:

    cytotec satın al

  95. faturalı hatlara kredi Says:

    Faturalı hattınız ile kredi çekmek ister miydiniz?

  96. cytotec sipariş Says:

    cytotec sipariş hattı hemen sipariş

  97. düşük hapı Says:

    düşük hapı siparişi için websitemizi ziyaret edebilirsiniz.

  98. cytotec sipariş Says:

    düşük hapı sipariş

  99. grilled food Says:

    You are in point of reality a superb webmaster. The website running swiftness will be outstanding. It appears that you are carrying out almost any distinctive key.. grilled food In addition, This belongings are generally masterpiece. you’ve done a superb pastime on this subject matter!

  100. cardiovascular medicine Says:

    I’m extremely pleased to discover this page. I need to
    to thank you for ones time due to this fantastic
    read!! I definitely liked every part of it and I have you book-marked to look at new things on your web site.

  101. aviation Says:

    Wow, fantastic weblog layout! How long have you been running a blog for?
    you make blogging look easy. The entire look of your website
    is magnificent, as neatly as the content material!

  102. seks shop Says:

    good post thank you

  103. divorce lawyer Says:

    Can I simply say what a relief to find somebody who really understands what they’re discussing on the net.
    You definitely know how to bring a problem to light and make it important.
    More people have to check this out and understand this side of your story.
    I can’t believe you are not more popular given that
    you certainly have the gift.

Leave a Reply