<div dir="ltr">Hi Stuart,<div><br></div><div>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.</div><div><br></div><div>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. </div><div><br></div><div>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.</div><div><br></div><div>Cheers,</div><div>Adam</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">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:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal"><span>>></span> If your question is a licensing one<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Nope its not that.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">So I take it DiFX uses Mark5access, yes ?<span><u></u><u></u></span></p>
<p class="MsoNormal"><span><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:10pt;font-family:Tahoma,sans-serif">Stuart Weston<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:Tahoma,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:Tahoma,sans-serif">Mobile: 021 713062<br>
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Skype: stuart.d.weston<br>
Email: <a href="mailto:stuart.weston@aut.ac.nz" target="_blank">stuart.weston@aut.ac.nz</a><br>
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<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><u></u><u></u></span></p>
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<p class="MsoNormal"><span><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Phillips, Chris (CASS, Marsfield) <Chris.Phillips@csiro.au>
<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<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Hi Stuart<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">Just wondering if we can use the DiFX VDIF library/code instead ?<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">It is not clear what your question actually is.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">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.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">If your question is a licensing one, then yes as all of DFIX is GPLv3 now. <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Cheers<u></u><u></u></p>
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<p class="MsoNormal">Chris<u></u><u></u></p>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr" style="font-size:12.8px"><div dir="ltr" style="font-size:12.8px"><div dir="ltr" style="font-size:12.8px"><div dir="ltr" style="font-size:12.8px"><div dir="ltr" style="font-size:12.8px">!=============================================================!<br><div dir="ltr" style="font-size:12.8px">A/Prof. Adam Deller </div><div dir="ltr" style="font-size:12.8px">ARC Future Fellow</div></div><div style="font-size:12.8px">Centre for Astrophysics & Supercomputing </div><div dir="ltr" style="font-size:12.8px">Swinburne University of Technology <br>John St, Hawthorn VIC 3122 Australia</div><div style="font-size:12.8px">phone: +61 3 9214 5307</div><div style="font-size:12.8px">fax: +61 3 9214 8797</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">office days (usually): Mon-Thu<br>!=============================================================!</div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>