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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">>> </span>legacy (16 byte) headers? <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I think our chain (DBBC/Fila10G/Jive5ab) is producing 16byte headers.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Well when I do a dumb read (python script) to check the data I have to use 16bytes<span style="mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif">Stuart Weston<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif">Mobile: 021 713062<br>
<br>
Skype: stuart.d.weston<br>
Email: stuart.weston@aut.ac.nz<br>
<br>
http://www.atnf.csiro.au/people/Stuart.Weston/index.html<br>
<br>
Software Engineer<br>
Institute for Radio Astronomy & Space Research (IRASR)<br>
School of Engineering, Computer and Mathematical Sciences<br>
Faculty of Design and Creative Technologies<br>
Auckland University of Technology, New Zealand.<br>
<br>
http://www.irasr.aut.ac.nz/<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Adam Deller <adeller@astro.swin.edu.au>
<br>
<b>Sent:</b> Friday, 20 March 2020 2:11 PM<br>
<b>To:</b> Stuart Weston <stuart.weston@aut.ac.nz><br>
<b>Cc:</b> Phillips, Chris (CASS, Marsfield) <Chris.Phillips@csiro.au>; difx-users@listmgr.nrao.edu<br>
<b>Subject:</b> Re: [Difx-users] Question : What library/code is DiFX using to read VDIF files<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi Stuart,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Is your VDIF data regular (32 byte) or legacy (16 byte) headers? I'm pretty sure that the latter is known to be not supported by VDIFIO (a relatively simple fix, that should certainly be made at some stage...)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Cheers,<o:p></o:p></p>
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<p class="MsoNormal">Adam<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Fri, 20 Mar 2020 at 11:54, Stuart Weston <<a href="mailto:stuart.weston@aut.ac.nz">stuart.weston@aut.ac.nz</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks Adam,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I am working with some code that Willem hacked together for DSPSR using Mark5Access.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Trying to get it to use our single dish data recorded in vdif format from the DBBC/Fila10G/Jive5ab.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Paul’s code doesn’t read our vdif
<span style="font-family:"Segoe UI Emoji",sans-serif">☹</span> data<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif">Stuart Weston</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif">Mobile: 021 713062<br>
<br>
Skype: stuart.d.weston<br>
Email: <a href="mailto:stuart.weston@aut.ac.nz" target="_blank">stuart.weston@aut.ac.nz</a><br>
<br>
<a href="http://www.atnf.csiro.au/people/Stuart.Weston/index.html" target="_blank">http://www.atnf.csiro.au/people/Stuart.Weston/index.html</a><br>
<br>
Software Engineer<br>
Institute for Radio Astronomy & Space Research (IRASR)<br>
School of Engineering, Computer and Mathematical Sciences<br>
Faculty of Design and Creative Technologies<br>
Auckland University of Technology, New Zealand.<br>
<br>
<a href="http://www.irasr.aut.ac.nz/" target="_blank">http://www.irasr.aut.ac.nz/</a></span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Adam Deller <<a href="mailto:adeller@astro.swin.edu.au" target="_blank">adeller@astro.swin.edu.au</a>>
<br>
<b>Sent:</b> Friday, 20 March 2020 1:50 PM<br>
<b>To:</b> Stuart Weston <<a href="mailto:stuart.weston@aut.ac.nz" target="_blank">stuart.weston@aut.ac.nz</a>><br>
<b>Cc:</b> Phillips, Chris (CASS, Marsfield) <<a href="mailto:Chris.Phillips@csiro.au">Chris.Phillips@csiro.au</a>>;
<a href="mailto:difx-users@listmgr.nrao.edu" target="_blank">difx-users@listmgr.nrao.edu</a><br>
<b>Subject:</b> Re: [Difx-users] Question : What library/code is DiFX using to read VDIF files</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi Stuart,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">mpifxcorr uses mark5access to unpack VDIF samples. The vdifio library that is also included with DiFX is quite limited - apart from what Chris already noted, I believe it doesn't
support legacy VDIF. Without any disrespect to anyone who worked on it (including me :) ) it was really a fairly quick hack to support some simple utilities.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Now, dspsr I think based some of its VDIF support code on vdifio. Paul Demorest first made a copy of vdifio onto git - whether it ultimately became an external mirror of the vdifio
hosted on SVN in DiFX or if it has branched off (and had functionality added) I'm actually not sure. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I know dspsr is capable of processing the VDIF-formatted data produced by the VLA tied array system, so I'm pretty sure that unpacking is already available in dspsr somewhere!
I'd suggest checking with Paul Demorest, since he is definitely the key person for VDIF in dspsr.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Cheers,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Adam<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Fri, 20 Mar 2020 at 10:32, Stuart Weston via Difx-users <<a href="mailto:difx-users@listmgr.nrao.edu" target="_blank">difx-users@listmgr.nrao.edu</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">>> If your question is a licensing one<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Nope its not that.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">So I take it DiFX uses Mark5access, yes ?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif">Stuart Weston</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif">Mobile: 021 713062<br>
<br>
Skype: stuart.d.weston<br>
Email: <a href="mailto:stuart.weston@aut.ac.nz" target="_blank">stuart.weston@aut.ac.nz</a><br>
<br>
<a href="http://www.atnf.csiro.au/people/Stuart.Weston/index.html" target="_blank">http://www.atnf.csiro.au/people/Stuart.Weston/index.html</a><br>
<br>
Software Engineer<br>
Institute for Radio Astronomy & Space Research (IRASR)<br>
School of Engineering, Computer and Mathematical Sciences<br>
Faculty of Design and Creative Technologies<br>
Auckland University of Technology, New Zealand.<br>
<br>
<a href="http://www.irasr.aut.ac.nz/" target="_blank">http://www.irasr.aut.ac.nz/</a></span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Phillips, Chris (CASS, Marsfield) <<a href="mailto:Chris.Phillips@csiro.au" target="_blank">Chris.Phillips@csiro.au</a>>
<br>
<b>Sent:</b> Friday, 20 March 2020 11:43 AM<br>
<b>To:</b> Stuart Weston <<a href="mailto:stuart.weston@aut.ac.nz" target="_blank">stuart.weston@aut.ac.nz</a>><br>
<b>Cc:</b> <a href="mailto:difx-users@listmgr.nrao.edu" target="_blank">difx-users@listmgr.nrao.edu</a><br>
<b>Subject:</b> Re: [Difx-users] Question : What library/code is DiFX using to read VDIF files</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi Stuart<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Just wondering if we can use the DiFX VDIF library/code instead ?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">It is not clear what your question actually is.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The initial VDIFIO library I wrote had *no* sampling unpacking routines. Others may had added some, I am not sure. Without that the answer would be essentially be no. VDIFIO is
in no way a plug in replacement for mark5access.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">If your question is a licensing one, then yes as all of DFIX is GPLv3 now. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Cheers<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Chris<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">_______________________________________________<br>
Difx-users mailing list<br>
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<a href="https://listmgr.nrao.edu/mailman/listinfo/difx-users" target="_blank">https://listmgr.nrao.edu/mailman/listinfo/difx-users</a><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt">A/Prof. Adam Deller </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt">ARC Future Fellow</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt">Centre for Astrophysics & Supercomputing </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt">Swinburne University of Technology <br>
John St, Hawthorn VIC 3122 Australia</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt">phone: +61 3 9214 5307</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.5pt">fax: +61 3 9214 8797</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">!=============================================================!<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">A/Prof. Adam Deller <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">ARC Future Fellow<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">Centre for Astrophysics & Supercomputing <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">Swinburne University of Technology <br>
John St, Hawthorn VIC 3122 Australia<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">phone: +61 3 9214 5307<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">fax: +61 3 9214 8797<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">office days (usually): Mon-Thu<br>
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