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    <p>Hi everyone,</p>
    <p>As Benjamin commented, at recent NFDI workshop I heard about
      alternative file formats to fulfill some features that hdf5 may
      lack as slice read/write performance, read-write-many capabilities
      and convenient reading. <br>
    </p>
    <p>We don't have a lot of experience with hdf5 and it might be that
      some of these features can be covered with an hdf5 virtual layer
      or other means.</p>
    <p>I have the impression that NeXus file format will become the
      standard in PaNosc/ExPands european projects and we are working on
      the integration of NeXus files in our data analysis workflows.</p>
    <p>Our question to the community is precisely to know your
      experience with hdf5, it's limitations, as well as to survey if
      there is interest for a join effort to investigate how hdf5
      compares with other file format as zarr, adios or even exdir.</p>
    <p>Thank you for your invitation to next meeting on April 26th. I
      would have join but I have an other appointment at that time. Any
      how, someone else from Alba will join.<br>
    </p>
    <p>Kind regards,</p>
    <p> Gabriel</p>
    <p><br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 7/4/22 21:42, Osborn, Raymond via
      NeXus wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:D8EBE0C6-5639-4F71-9407-3A13CB5455B5@anl.gov">
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      Hi everyone,
      <div class="">NeXus was originally both a standard for defining
        how data should be organized in files and a unified API for
        reading and writing those files, irrespective of the physical
        file format, HDF4, HDF5, or XML. Thanks mainly to the work that
        Mark Koennecke put into the C-API, it achieved both goals
        seamlessly. I think it was a remarkable technical achievement.
        To some extent, the two components were independent of each
        other, but not entirely. For example, HDF4 did not allow group
        attributes, so for a long time, they were not part of the
        definitions. Now that HDF4 is obsolete, the NeXus definitions
        have evolved to use more and more of the features that HDF5
        provides, many of which have become an essential part of the
        standard. </div>
      <div class=""><br class="">
      </div>
      <div class="">I think there are therefore two questions that need
        to be clarified, preferably before we next meet. The first is
        whether the proposed alternative physical file formats will
        allow the same type of hierarchical data organization and
        features that have now become part of the standard. If they
        didn’t, this would probably be a deal-breaker, unless there is a
        way of interfacing, say, regular HDF5 NeXus files to the new
        file formats, in much the same way that HDF5 handles external
        links. </div>
      <div class=""><br class="">
      </div>
      <div class="">The second is whether there is a need to revive the
        API to handle the new formats, so that we are not faced with the
        situation that Tobias warned about with a large fraction of the
        user community unable to read such files. The reason the API
        became deprecated is, in my view, that we have depended too much
        on one or two people (i.e., Mark in the case of the C-API) to
        take all the responsibility for maintaining it, so that
        supporting new HDF5 features, such as virtual data sets or even
        variable-length-strings, fell entirely on them. While an
        increasing number of facilities have become dependent on NeXus,
        very few of them, if any, have committed resources to
        maintaining it, so it has become an activity that many of us
        squeeze in when we have free time from our other
        responsibilities. If facilities like Alba, and presumably
        others, feel that they are being held back by technical
        limitations of HDF5, then it might be necessary to rethink the
        NeXus support model, so that API development is revived by being
        integrated into other facility software development projects,
        such as Mantid or Dials. It would probably save the facilities
        money in the long term, but it would require NeXus to be less of
        a part-time activity. Or we need to encourage more people to
        contribute, in the way the more successful open-source projects
        are run. I would certainly welcome additional support for the
        Python API for the same reasons.</div>
      <div class=""><br class="">
      </div>
      <div class="">With best regards,</div>
      <div class="">Ray</div>
      <div class="">
        <div class="">
          <div class="">-- <br class="">
            Ray Osborn, Senior Scientist<br class="">
            Materials Science Division<br class="">
            Argonne National Laboratory<br class="">
            Argonne, IL 60439, USA<br class="">
            Phone: +1 (630) 252-9011<br class="">
            <a href="mailto:ROsborn@anl.gov" class=""
              moz-do-not-send="true">Email: ROsborn@anl.gov</a><br
              class="">
            <br class="">
          </div>
          <div><br class="">
            <blockquote type="cite" class="">
              <div class="">On Apr 7, 2022, at 12:16 PM, Watts Benjamin
                (PSI) via NeXus <<a
                  href="mailto:nexus@shadow.nd.rl.ac.uk"
                  class="moz-txt-link-freetext" moz-do-not-send="true">nexus@shadow.nd.rl.ac.uk</a>>
                wrote:</div>
              <br class="Apple-interchange-newline">
              <div class="">
                <div id="divtagdefaultwrapper" dir="ltr"
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                  <div style="margin-top: 0px; margin-bottom: 0px;"
                    class="">Hi Tobias,</div>
                  <div style="margin-top: 0px; margin-bottom: 0px;"
                    class="">   I agree that we have spent the past
                    decade recommending HDF5, but at the same time we
                    have been saying that NeXus is about the
                    organisation of data within the container, not the
                    container file format itself. I can see that you
                    feel surprised by the sudden discussion of other
                    file formats, just as I was surprised to hear the
                    community talking about it at the recent NFDI
                    workshop. I am only advocating for discussion and I
                    would like to hear your input.<span
                      class="Apple-converted-space"> </span><span
                      class="">I agree that multiple backends will
                      introduce higher support requirements that NeXus
                      doesn't currently have resources for.</span><span
                      class="Apple-converted-space"> </span>Your
                    preference for NeXus referring to a (small) defined
                    set of file formats is a valid view point and I
                    agree that there are practicalities to consider. I
                    view the next telco as just the restart of an old
                    discussion and nothing can really change until a
                    proposal is brought to a NIAC meeting (and
                    accepted).</div>
                  <div style="margin-top: 0px; margin-bottom: 0px;"
                    class=""><br class="">
                  </div>
                  <div style="margin-top: 0px; margin-bottom: 0px;"
                    class="">Cheers,</div>
                  <div style="margin-top: 0px; margin-bottom: 0px;"
                    class="">Ben<br class="">
                  </div>
                </div>
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                <span style="caret-color: rgb(0, 0, 0); font-family:
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                  inline !important;" class=""></span>
                <div id="divRplyFwdMsg" dir="ltr" style="caret-color:
                  rgb(0, 0, 0); font-family: Helvetica; font-size: 12px;
                  font-style: normal; font-variant-caps: normal;
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                  <font style="font-size: 11pt;" class="" face="Calibri,
                    sans-serif"><b class="">From:</b><span
                      class="Apple-converted-space"> </span>Tobias
                    Richter <<a href="mailto:Tobias.Richter@ess.eu"
                      class="moz-txt-link-freetext"
                      moz-do-not-send="true">Tobias.Richter@ess.eu</a>><br
                      class="">
                    <b class="">Sent:</b><span
                      class="Apple-converted-space"> </span>Thursday, 7
                    April 2022 6:23:43 PM<br class="">
                    <b class="">To:</b><span
                      class="Apple-converted-space"> </span>Discussion
                    forum for the NeXus data format;
                    <a href="mailto:nexus@nexusformat.org"
                      class="moz-txt-link-freetext"
                      moz-do-not-send="true">nexus@nexusformat.org</a><br
                      class="">
                    <b class="">Cc:</b><span
                      class="Apple-converted-space"> </span>Watts
                    Benjamin (PSI); Alexander Debus; Nicolas Soler;
                    Franz Pöschel; Emilio Centeno Ortiz<br class="">
                    <b class="">Subject:</b><span
                      class="Apple-converted-space"> </span>Re: [Nexus]
                    HDF5 as NeXus file format</font>
                  <div class=""> </div>
                </div>
                <div style="caret-color: rgb(0, 0, 0); font-family:
                  Helvetica; font-size: 12px; font-style: normal;
                  font-variant-caps: normal; font-weight: normal;
                  letter-spacing: normal; text-align: start;
                  text-indent: 0px; text-transform: none; white-space:
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                  <div class="WordSection1" style="page: WordSection1;">
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class="">Hi all,<o:p class=""></o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class=""><o:p class=""> </o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class="">According to this discussion from a
                        decade ago HDF5 is singled out as the only
                        preferred physical file format:<span
                          class="Apple-converted-space"> </span><a
                          href="https://www.nexusformat.org/NIAC2012"
                          style="color: blue; text-decoration:
                          underline;" class="moz-txt-link-freetext"
                          moz-do-not-send="true">https://www.nexusformat.org/NIAC2012</a><o:p
                          class=""></o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class=""><o:p class=""> </o:p></span></div>
                    <ul style="margin-bottom: 0cm;" class="" type="disc">
                      <li class="MsoNormal" style="margin: 0cm;
                        font-size: 11pt; font-family: Calibri,
                        sans-serif; color: rgb(81, 81, 81);
                        background-color: white; background-position:
                        initial initial; background-repeat: initial
                        initial;">
                        <span style="font-size: 13.5pt; font-family:
                          "PT Sans", sans-serif;" class="">NeXus
                          guiding statements:<o:p class=""></o:p></span>
                        <ul style="margin-bottom: 0cm;" class=""
                          type="circle">
                          <li class="MsoNormal" style="margin: 0cm;
                            font-size: 11pt; font-family: Calibri,
                            sans-serif; color: rgb(81, 81, 81);
                            background-color: white;
                            background-position: initial initial;
                            background-repeat: initial initial;">
                            <span style="font-size: 13.5pt; font-family:
                              "PT Sans", sans-serif;" class="">The
                              main focus of the NeXus community is to
                              further develop the dictionaries, base
                              classes and application definitions.<o:p
                                class=""></o:p></span></li>
                          <li class="MsoNormal" style="margin: 0cm;
                            font-size: 11pt; font-family: Calibri,
                            sans-serif; color: rgb(81, 81, 81);
                            background-color: white;
                            background-position: initial initial;
                            background-repeat: initial initial;">
                            <span style="font-size: 13.5pt; font-family:
                              "PT Sans", sans-serif;" class="">The
                              NIAC is a forum for resolving issues.<o:p
                                class=""></o:p></span></li>
                          <li class="MsoNormal" style="margin: 0cm;
                            font-size: 11pt; font-family: Calibri,
                            sans-serif; color: rgb(81, 81, 81);
                            background-color: white;
                            background-position: initial initial;
                            background-repeat: initial initial;">
                            <span style="font-size: 13.5pt; font-family:
                              "PT Sans", sans-serif;" class="">The
                              NIAC acts as a custodian for NeXus:
                              definitions, examples, documentation,
                              reference implementations.<o:p class=""></o:p></span></li>
                          <li class="MsoNormal" style="margin: 0cm;
                            font-size: 11pt; font-family: Calibri,
                            sans-serif; color: rgb(81, 81, 81);
                            background-color: white;
                            background-position: initial initial;
                            background-repeat: initial initial;">
                            <span style="font-size: 13.5pt; font-family:
                              "PT Sans", sans-serif;" class="">NeXus
                              can be mapped to different physical file
                              formats:<o:p class=""></o:p></span>
                            <ul style="margin-bottom: 0cm;" class=""
                              type="square">
                              <li class="MsoNormal" style="margin: 0cm;
                                font-size: 11pt; font-family: Calibri,
                                sans-serif; color: rgb(81, 81, 81);
                                background-color: white;
                                background-position: initial initial;
                                background-repeat: initial initial;">
                                <span style="font-size: 13.5pt;
                                  font-family: "PT Sans",
                                  sans-serif;" class="">HDF5 is the
                                  preferred physical file format.<o:p
                                    class=""></o:p></span></li>
                              <li class="MsoNormal" style="margin: 0cm;
                                font-size: 11pt; font-family: Calibri,
                                sans-serif; color: rgb(81, 81, 81);
                                background-color: white;
                                background-position: initial initial;
                                background-repeat: initial initial;">
                                <span style="font-size: 13.5pt;
                                  font-family: "PT Sans",
                                  sans-serif;" class="">NeXus-XML is the
                                  currently supported ASCII file format.<o:p
                                    class=""></o:p></span></li>
                            </ul>
                          </li>
                        </ul>
                      </li>
                    </ul>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class=""><o:p class=""> </o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class="">Technically you can map into
                        different backends. Yes. XML is still sort of
                        supported. At the time it was requested that
                        other options would get the official blessing
                        (YAML being specifically asked for) but for
                        practical exchange between facilities the
                        consensus was to stick with HDF5.<o:p class=""></o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class=""><o:p class=""> </o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class="">There no longer is a recommended or
                        fully maintained abstraction layer (like NAPI)
                        to do an on the fly translation between
                        backends. Who would be in charge of defining how
                        the “official” mapping into sqlite or whatever
                        would look like? How many backends can the
                        community commit to support in the long run?<o:p
                          class=""></o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class=""><o:p class=""> </o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class="">When tools that are currently
                        developed/supported/maintained to “read”
                        NeXus/HDF5 fail to work with what gets handed
                        out, we are in a worse situation than we are
                        now. Note: What facilities do internally for
                        performance optimisations or other reasons could
                        be different, if it stays internal. But I am
                        clearly a lot less open minded about producing
                        non-HDF5 files with a “NeXus” label than Ben.
                        Maybe I missed some decisions that were taken
                        lately in this direction or we’re no longer
                        interested in being able to read each other’s
                        files. Should either be the case, I’ll be quiet.<o:p
                          class=""></o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class=""><o:p class=""> </o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class="">Best wishes,<o:p class=""></o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class="">Tobias<o:p class=""></o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class=""><o:p class=""> </o:p></span></div>
                    <div style="margin: 0cm; font-size: 11pt;
                      font-family: Calibri, sans-serif;" class="">
                      <span class=""><o:p class=""> </o:p></span></div>
                    <div style="border-style: solid none none;
                      border-top-width: 1pt; border-top-color: rgb(181,
                      196, 223); padding: 3pt 0cm 0cm;" class="">
                      <div style="margin: 0cm 0cm 0cm 36pt; font-size:
                        11pt; font-family: Calibri, sans-serif;"
                        class="">
                        <b class=""><span style="font-size: 12pt;"
                            class="">From:<span
                              class="Apple-converted-space"> </span></span></b><span
                          style="font-size: 12pt;" class="">NeXus <<a
href="mailto:nexus-bounces@shadow.nd.rl.ac.uk"
                            class="moz-txt-link-freetext"
                            moz-do-not-send="true">nexus-bounces@shadow.nd.rl.ac.uk</a>>
                          on behalf of "Watts Benjamin (PSI) via NeXus"
                          <<a href="mailto:nexus@shadow.nd.rl.ac.uk"
                            class="moz-txt-link-freetext"
                            moz-do-not-send="true">nexus@shadow.nd.rl.ac.uk</a>><br
                            class="">
                          <b class="">Reply to:<span
                              class="Apple-converted-space"> </span></b>Discussion
                          forum for the NeXus data format <<a
                            href="mailto:nexus@shadow.nd.rl.ac.uk"
                            class="moz-txt-link-freetext"
                            moz-do-not-send="true">nexus@shadow.nd.rl.ac.uk</a>><br
                            class="">
                          <b class="">Date:<span
                              class="Apple-converted-space"> </span></b>Thursday,
                          7 April 2022 at 17:10<br class="">
                          <b class="">To:<span
                              class="Apple-converted-space"> </span></b>"<a
                            href="mailto:nexus@nexusformat.org"
                            class="moz-txt-link-freetext"
                            moz-do-not-send="true">nexus@nexusformat.org</a>"
                          <<a href="mailto:nexus@nexusformat.org"
                            class="moz-txt-link-freetext"
                            moz-do-not-send="true">nexus@nexusformat.org</a>><br
                            class="">
                          <b class="">Cc:<span
                              class="Apple-converted-space"> </span></b>Benjamin
                          Watts <<a
                            href="mailto:benjamin.watts@psi.ch"
                            class="moz-txt-link-freetext"
                            moz-do-not-send="true">benjamin.watts@psi.ch</a>>,
                          Alexander Debus <<a
                            href="mailto:a.debus@hzdr.de"
                            class="moz-txt-link-freetext"
                            moz-do-not-send="true">a.debus@hzdr.de</a>>,
                          Nicolas Soler <<a
                            href="mailto:nsoler@cells.es"
                            class="moz-txt-link-freetext"
                            moz-do-not-send="true">nsoler@cells.es</a>>,
                          Franz Pöschel <<a
                            href="mailto:f.poeschel@hzdr.de"
                            class="moz-txt-link-freetext"
                            moz-do-not-send="true">f.poeschel@hzdr.de</a>>,
                          Emilio Centeno Ortiz <<a
                            href="mailto:ecenteno@cells.es"
                            class="moz-txt-link-freetext"
                            moz-do-not-send="true">ecenteno@cells.es</a>><br
                            class="">
                          <b class="">Subject:<span
                              class="Apple-converted-space"> </span></b>Re:
                          [Nexus] HDF5 as NeXus file format<o:p class=""></o:p></span></div>
                    </div>
                    <div class="">
                      <div style="margin: 0cm 0cm 0cm 36pt; font-size:
                        11pt; font-family: Calibri, sans-serif;"
                        class="">
                        <o:p class=""> </o:p></div>
                    </div>
                    <div id="divtagdefaultwrapper" class="">
                      <div style="margin-top: 0px; margin-bottom: 0px;
                        margin-left: 36pt;" class=""><span
                          style="font-size: 12pt;" class="">Hi Gabriel,<o:p
                            class=""></o:p></span></div>
                      <div style="margin-top: 0px; margin-bottom: 0px;
                        margin-left: 36pt;" class=""><span
                          style="font-size: 12pt;" class="">   NeXus is
                          officially not dependent on HDF5 and we are
                          definitely open minded about implementing the
                          NeXus<span class="Apple-converted-space"> </span><i
                            class="">data format</i><span
                            class="Apple-converted-space"> </span>on<span
                            class="Apple-converted-space"> </span><i
                            class="">file formats</i><span
                            class="Apple-converted-space"> </span>other
                          than HDF5. We plan to discuss such issues at
                          our<span class="Apple-converted-space"> </span><a
href="https://www.nexusformat.org/Telco_20220426.html" style="color:
                            blue; text-decoration: underline;" class=""
                            moz-do-not-send="true">next teleconference</a><span
                            class="Apple-converted-space"> </span>on
                          April 26th and I invite you to join us. Are
                          there specific container file formats that you
                          are interested in?<o:p class=""></o:p></span></div>
                      <div style="margin-top: 0px; margin-bottom: 0px;
                        margin-left: 36pt;" class=""><span
                          style="font-size: 12pt;" class=""><o:p
                            class=""> </o:p></span></div>
                      <div style="margin-top: 0px; margin-bottom: 0px;
                        margin-left: 36pt;" class=""><span
                          style="font-size: 12pt;" class="">Cheers,<o:p
                            class=""></o:p></span></div>
                      <div style="margin-top: 0px; margin-bottom: 0px;
                        margin-left: 36pt;" class=""><span
                          style="font-size: 12pt;" class="">Ben<o:p
                            class=""></o:p></span></div>
                      <p class="MsoNormal" style="margin: 0cm 0cm 12pt
                        36pt; font-size: 11pt; font-family: Calibri,
                        sans-serif;">
                        <span style="font-size: 12pt;" class=""><o:p
                            class=""> </o:p></span></p>
                      <div class="">
                        <div class="MsoNormal" style="margin: 0cm 0cm
                          0cm 36pt; font-size: 11pt; font-family:
                          Calibri, sans-serif; text-align: center;"
                          align="center">
                          <span style="font-size: 12pt;" class="">
                            <hr class="" width="100%" size="0"
                              align="center">
                          </span></div>
                        <div id="divRplyFwdMsg" class="">
                          <div style="margin: 0cm 0cm 0cm 36pt;
                            font-size: 11pt; font-family: Calibri,
                            sans-serif;" class="">
                            <b class=""><span style="" class="">From:</span></b><span
                              style="" class=""><span
                                class="Apple-converted-space"> </span>NeXus
                              <<a
                                href="mailto:nexus-bounces@shadow.nd.rl.ac.uk"
                                class="moz-txt-link-freetext"
                                moz-do-not-send="true">nexus-bounces@shadow.nd.rl.ac.uk</a>>
                              on behalf of Gabriel Jover Manas via NeXus
                              <<a
                                href="mailto:nexus@shadow.nd.rl.ac.uk"
                                class="moz-txt-link-freetext"
                                moz-do-not-send="true">nexus@shadow.nd.rl.ac.uk</a>><br
                                class="">
                              <b class="">Sent:</b><span
                                class="Apple-converted-space"> </span>Thursday,
                              7 April 2022 4:47 PM<br class="">
                              <b class="">To:</b><span
                                class="Apple-converted-space"> </span><a
                                href="mailto:nexus@nexusformat.org"
                                class="moz-txt-link-freetext"
                                moz-do-not-send="true">nexus@nexusformat.org</a><br
                                class="">
                              <b class="">Cc:</b><span
                                class="Apple-converted-space"> </span>Gabriel
                              Jover Manas; Nicolas Soler; Emilio Centeno
                              Ortiz<br class="">
                              <b class="">Subject:</b><span
                                class="Apple-converted-space"> </span>[Nexus]
                              HDF5 as NeXus file format</span><span
                              style="font-size: 12pt;" class=""><o:p
                                class=""></o:p></span></div>
                          <div class="">
                            <div style="margin: 0cm 0cm 0cm 36pt;
                              font-size: 11pt; font-family: Calibri,
                              sans-serif;" class="">
                              <span style="font-size: 12pt;" class=""> <o:p
                                  class=""></o:p></span></div>
                          </div>
                        </div>
                        <div class="">
                          <div style="margin: 0cm 0cm 0cm 36pt;
                            font-size: 11pt; font-family: Calibri,
                            sans-serif;" class="">
                            <span style="font-size: 12pt;" class="">Dear
                              NeXus Users Community,<o:p class=""></o:p></span></div>
                          <div style="margin-top: 0px; margin-bottom:
                            0px; margin-left: 36pt;" class=""><span
                              style="font-size: 12pt;" class="">Last
                              NFDI NeXus Workshop was a great
                              opportunity to meet the community and
                              learn from the experience of other
                              scientists and institutions.<o:p class=""></o:p></span></div>
                          <div style="margin-top: 0px; margin-bottom:
                            0px; margin-left: 36pt;" class=""><span
                              style="font-size: 12pt;" class="">Here at
                              ALBA we are working on the integration of
                              NeXus files in our data analysis
                              workflows.<o:p class=""></o:p></span></div>
                          <div style="margin-top: 0px; margin-bottom:
                            0px; margin-left: 36pt;" class=""><span
                              style="font-size: 12pt;" class="">In this
                              scope we are interested on investigating
                              alternatives to hdf5 as NeXus file format,
                              in terms of slice read/write performance,
                              read-write-many capabilities and
                              convenient reading.<o:p class=""></o:p></span></div>
                          <div style="margin-top: 0px; margin-bottom:
                            0px; margin-left: 36pt;" class=""><span
                              style="font-size: 12pt;" class="">Would
                              the community be open to decoupling the
                              data format (NeXus) from the file format
                              (HDF5)?<br class="">
                              Is there already any effort in the
                              community in this direction?<br class="">
                              Is anyone else also interested?<o:p
                                class=""></o:p></span></div>
                          <div style="margin-top: 0px; margin-bottom:
                            0px; margin-left: 36pt;" class=""><span
                              style="font-size: 12pt;" class=""><o:p
                                class=""> </o:p></span></div>
                          <div style="margin-top: 0px; margin-bottom:
                            0px; margin-left: 36pt;" class=""><span
                              style="font-size: 12pt;" class="">Best
                              regards,<o:p class=""></o:p></span></div>
                          <div style="margin-top: 0px; margin-bottom:
                            0px; margin-left: 36pt;" class=""><span
                              style="font-size: 12pt;" class="">Gabriel<o:p
                                class=""></o:p></span></div>
                          <div style="margin-top: 0px; margin-bottom:
                            0px; margin-left: 36pt;" class=""><span
                              style="font-size: 12pt;" class=""><o:p
                                class=""> </o:p></span></div>
                          <div class="">
                            <div style="margin: 0cm 0cm 0cm 36pt;
                              font-size: 11pt; font-family: Calibri,
                              sans-serif;" class="">
                              <span style="font-size: 12pt;" class="">--<o:p
                                  class=""></o:p></span></div>
                            <div class="">
                              <div class="">
                                <table class="MsoNormalTable"
                                  style="width: 468pt; margin-left:
                                  36pt;" width="624" cellspacing="0"
                                  cellpadding="0" border="0">
                                  <tbody class="">
                                    <tr class="">
                                      <td rowspan="2" style="width:
                                        94.9pt; padding: 0cm;" class=""
                                        width="127">
                                        <div style="margin-top: 0px;
                                          margin-bottom: 0px;" class=""><a
href="http://www.albasynchrotron.es/" target="_blank" style="color:
                                            blue; text-decoration:
                                            underline;" class=""
                                            moz-do-not-send="true"><span
                                              style="color: windowtext;
                                              text-decoration: none;"
                                              class=""><span
                                                style="color: blue;
                                                border: 1pt solid
                                                windowtext; padding:
                                                0cm;" class=""><img
                                                  id="_x0000_i1025"
                                                  alt="Image removed by
                                                  sender. ALBA
                                                  Synchrotron"
                                                  src="cid:~WRD0000.jpg"
                                                  style="width:
                                                  1.2291in; height:
                                                  0.5729in;" class=""
                                                  moz-do-not-send="true"
                                                  width="118"
                                                  height="55" border="0"></span></span></a><o:p
                                            class=""></o:p></div>
                                      </td>
                                      <td style="width: 373.1pt;
                                        padding: 3.75pt 0cm 0cm;"
                                        class="" width="497"
                                        valign="top">
                                        <div style="margin: 0cm;
                                          font-size: 11pt; font-family:
                                          Calibri, sans-serif;" class="">
                                          <b class=""><span
                                              style="font-size: 12pt;
                                              font-family: Arial,
                                              sans-serif; color: rgb(17,
                                              46, 80);" class="">Gabriel
                                              Jover-Mañas</span></b><o:p
                                            class=""></o:p></div>
                                      </td>
                                    </tr>
                                    <tr class="">
                                      <td style="width: 373.1pt;
                                        padding: 3.75pt 0cm 0cm;"
                                        class="" width="497"
                                        valign="top">
                                        <div style="margin: 0cm;
                                          font-size: 11pt; font-family:
                                          Calibri, sans-serif;" class="">
                                          <span style="font-size: 9pt;
                                            font-family: Arial,
                                            sans-serif;" class="">Scientific
                                            Data Management<br class="">
                                            Computing Division<span
                                              class="Apple-converted-space"> </span></span><o:p
                                            class=""></o:p></div>
                                      </td>
                                    </tr>
                                    <tr class="">
                                      <td colspan="2" style="padding:
                                        3.75pt 0cm 0cm;" class=""
                                        valign="top">
                                        <div style="margin: 0cm;
                                          font-size: 11pt; font-family:
                                          Calibri, sans-serif;" class="">
                                           <o:p class=""></o:p></div>
                                      </td>
                                    </tr>
                                    <tr class="">
                                      <td colspan="2" style="padding:
                                        3.75pt 0cm 0cm;" class=""
                                        valign="top">
                                        <div style="margin: 0cm;
                                          font-size: 11pt; font-family:
                                          Calibri, sans-serif;" class="">
                                          <b class=""><span
                                              style="font-size: 10pt;
                                              font-family: Arial,
                                              sans-serif;" class="">ALBA
                                              SYNCHROTRON LIGHT SOURCE</span></b><o:p
                                            class=""></o:p></div>
                                      </td>
                                    </tr>
                                    <tr class="">
                                      <td colspan="2" style="padding:
                                        3.75pt 0cm 0cm;" class=""
                                        valign="top">
                                        <div style="margin: 0cm;
                                          font-size: 11pt; font-family:
                                          Calibri, sans-serif;" class="">
                                          <span style="font-size: 9pt;
                                            font-family: Arial,
                                            sans-serif;" class=""><a
                                              href="http://www.albasynchrotron.es/en/about/coming-to-alba"
                                              target="_blank"
                                              style="color: blue;
                                              text-decoration:
                                              underline;" class=""
                                              moz-do-not-send="true">Carrer
                                              de la Llum 2-26 | 08290 |
                                              Cerdanyola del Vallès|
                                              Barcelona | Spain<span
                                                class="Apple-converted-space"> </span></a><br
                                              class="">
                                            (+34) 93 592 4471<span
                                              class="Apple-converted-space"> </span></span><o:p
                                            class=""></o:p></div>
                                      </td>
                                    </tr>
                                    <tr class="">
                                      <td colspan="2" style="padding:
                                        3.75pt 0cm 0cm;" class=""
                                        valign="top">
                                        <div style="margin: 0cm;
                                          font-size: 11pt; font-family:
                                          Calibri, sans-serif;" class="">
                                          <b class=""><span
                                              style="font-size: 9pt;
                                              color: rgb(17, 46, 80);"
                                              class=""><a
                                                href="http://www.albasynchrotron.es/"
                                                target="_blank"
                                                style="color: blue;
                                                text-decoration:
                                                underline;" class=""
                                                moz-do-not-send="true">www.albasynchrotron.es</a></span></b><b
                                            class=""><span
                                              style="font-size: 7.5pt;
                                              color: rgb(17, 46, 80);"
                                              class=""><span
                                                class="Apple-converted-space"> </span>|<span
class="Apple-converted-space"> </span></span></b><b class=""><span
                                              style="font-size: 9pt;
                                              color: rgb(17, 46, 80);"
                                              class=""><a
                                                href="mailto:Gabriel.Jover@cells.es"
                                                style="color: blue;
                                                text-decoration:
                                                underline;" class=""
                                                moz-do-not-send="true">Gabriel.Jover@cells.es<span
class="Apple-converted-space"> </span></a>|<span
                                                class="Apple-converted-space"> </span><a
href="https://www.albasynchrotron.es/en/about/legal-notice"
                                                target="_blank"
                                                style="color: blue;
                                                text-decoration:
                                                underline;" class=""
                                                moz-do-not-send="true">legal
                                                notice</a></span></b><o:p
                                            class=""></o:p></div>
                                      </td>
                                    </tr>
                                    <tr class="">
                                      <td colspan="2" style="padding:
                                        3.75pt 0cm 0cm;" class=""
                                        valign="top">
                                        <div style="margin: 0cm;
                                          font-size: 11pt; font-family:
                                          Calibri, sans-serif;" class="">
                                           <span
                                            class="Apple-converted-space"> </span><o:p
                                            class=""></o:p></div>
                                      </td>
                                    </tr>
                                    <tr class="">
                                      <td colspan="2" style="padding:
                                        6pt 0cm 0cm;" class=""
                                        valign="top">
                                        <div style="margin: 0cm;
                                          font-size: 11pt; font-family:
                                          Calibri, sans-serif;" class="">
                                          <b class=""><span
                                              style="font-size: 8pt;
                                              color: rgb(138, 138,
                                              138);" class="">Please, do
                                              not print this e-mail
                                              unless it is absolutely
                                              necessary.<span
                                                class="Apple-converted-space"> </span><br
                                                class="">
                                            </span></b><span
                                            style="font-size: 8pt;
                                            color: rgb(138, 138, 138);"
                                            class="">Si heu rebut aquest
                                            correu per error, us informo
                                            que pot contenir informació
                                            confidencial i privada i que
                                            està prohibit el seu ús. Us
                                            agrairíem que ho comuniqueu
                                            al remitent i l'elimineu.
                                            Gràcies.<br class="">
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                                            Gracias.<br class="">
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                                            strictly forbidden. Please
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
NeXus mailing list
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<a class="moz-txt-link-freetext" href="https://lists.nexusformat.org/mailman/listinfo/nexus">https://lists.nexusformat.org/mailman/listinfo/nexus</a>
</pre>
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