[teqc] So long, partner. Gotta make tracks. (which here in the great American West means "Goodbye")
alberto.lopez3 at upr.edu
Thu Feb 28 07:48:20 MST 2019
Thanks Lou for all of your hard work and dedication, we certainly will miss your weekly teqc tips.
Lots of success in your new endeavors!
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Alberto M. López Venegas, Ph.D.
Department of Geology
University of Puerto Rico - Mayagüez
Mayagüez, Puerto Rico 00681
(787) 832-4040 x.2704
(847) 217-3828 (cel.)
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> On Feb 28 , 2019, at 10:39 AM, Lou Estey <lou at unavco.org> wrote:
> Farewell! Adieu! Auf Wiedersehen! Au revoir! Прощай!
> Adios! さようなら! 再見! Tchau! Ha det! Farvel! Ciao!
> Today is my last day at UNAVCO. At long last, I'm retiring!
> Designing, developing, extending, and maintaining teqc (which didn't even have a real name
> for most of its first year in 1996!) was only a part of my job, but even so it has been an
> exceptional honor and privilege to provide support to a world-wide community of users for
> over 23 years -- which, among other things, spanned two full Solar Cycles (23 and 24),
> seven leap second insertions, and, after GPS, SBAS, and GLONASS, the addition of four more
> GNSS constellations. Talk about a wild ride.
> Although a few of its stars are now gone, this project of course would have been impossible
> without another constellation -- that being one of people:
> at UNAVCO:
> - Chuck Meertens -- who thought I might be able to "make life better" for the GPS user
> community and hired me and then served as a vital "impedance to think into" over the years
> as we pondered and ironed out ideas together;
> - Chris Rocken, Jim Johnson, John Braun -- the core of the original Fortran QC authors,
> who provided much needed helpful feedback and constructive criticisms about the qc code
> component during its initial transformation from their Fortran code to my C code;
> - Myron McCallum -- who understood that a universal tool that could read a wide suite
> of raw GPS formats and write out RINEX as well (in addition to performing a quality
> check on it all) would be a huge boon to the UNAVCO GPS archive project;
> - Stuart Wier -- who worked on the preliminary GLONASS orbit code and wrote the
> bulk of the current PDF teqc tutorial;
> - Freddy Blume, Henry Berglund, and many other UNAVCO engineers -- who tested, suggested,
> provided feedback, complained (?), etc. through the years;
> - Sarah Doelger -- who also provided the same great UNAVCO engineering support as above,
> plus was of immense help in proofreading and improving the teqc 'tips of week' over the
> past two years;
> - David Maggert, Fran Boler, and all the other members of our GPS/GNSS archiving team -- who
> constantly suggested little extra needs or improvements, and did a huge amount of examination
> of real data at it poured into the UNAVCO archive through teqc, then found and reported edge cases;
> plus immense support from GNSS equipment manufacturers, engineers and others, some of whom are:
> - Trimble: Brian Frohring, Keith Trider, Tim Peterson;
> - Septentrio: Jean-Marie Sleewaegen, Francesca Clemente, Thadeus Tuazon, David Mertens, Jan Leyssens;
> - Javad: Sergey Organov, Oleg Tulabin, Vladimir Yefriemov;
> - Topcon: Dmitry Kolosov, Tom Morris, Alexei Zinoviev;
> - Leica: Frank Pache, Neil Brown, Justin Walford, Youssef Tawk, Lienhart Troyer, James Stowell;
> - Navcom: Thadeus Tuazon, Kevin Dixon;
> - Magellan: Dmitriy Ivanov;
> - Ashtech: Robert Snow, Igor Artushkin, Dmitriy Ivanov, Dmitry Kozlov;
> plus major community supporters:
> - Jeff Freymueller, Mark Murray, Geoff Blewitt, Richard Langley, Jim Ray, Giovanni Sella,
> Nacho Romero, Neville Palmer, Ted Zhou, Kristine Larson, Dave Stowers, Angie Moore,
> Razmik Khachikyan, Bob King, Tom Herring, Carey Noll, David Sandwell, Markus Ramatschi,
> Markus Bradke, Oliver Montenbruck, Matt King, Hans van der Marel, Ambrogio Maria Manzino,
> Nobert Suard, Yuki Hatanaka, Hiromichi Tsuji, John Beavan, Herb Dragert, Michael Schmidt,
> and many, many others;
> and a very special "thank you" to:
> - Werner Gurtner, Univ. of Berne -- who was very patient with me early on when I'd ask
> questions or point out discrepancies in his mid-1990's RINEX documentation, and, later on,
> became a friend engaging in many technical, philosophical, and personal discussions.
> (We miss you, Werner.)
> Anyone who has been on this list for awhile needs no reminding that you are part of
> a large world-wide group of teqc users (including a couple dozen engineers here at UNAVCO)
> with which to confer, plus there are the on-line teqc resources at
> and past emails at https://postal.unavco.org//pipermail/teqc/ which now includes over 100
> 'tips of the week'. And just running `teqc +help` outputs the various command line options.
> A separate email from UNAVCO management will follow describing what the path forward is going
> to be. (In the meantime you can execute `teqc +patton` for some humor and/or inspiration --
> an option which has been around since almost the beginning and has been periodically updated;
> it's in every version of teqc that you have and is perfectly safe: you just execute teqc with
> that one option ... or '-patton', whichever.)
> Hopefully, I've at least demonstrated the art of the possible, including wrangling (*) all
> GPS/GNSS formats that came into the UNAVCO archive (covering data going back to 1986) with
> a single, unified command line interface, providing simple ways of examining that data, and
> making that same interface available on a wide variety of operating systems (which included
> both big-endian and little-endian processors -- for those of you who know what that means).
> You've also benefited from my being a physicist and geophysicist, having actually done field
> work (including geodetic field work: GPS ground and helicopter campaign work in and around
> Yellowstone, and even helping to install a few PBO permanent sites, including P197; see
> tip of week 2025, https://postal.unavco.org/pipermail/teqc/2018/002558.html), being comfortable
> with (and usually insisting upon) talking directly with engineers, and essentially being
> an interface that you could directly contact any time, any day, with questions about teqc
> and this whole complex GPS/GNSS technological rodeo -- for over two decades.
> Here at the end, I thought perhaps a funny historical side note may be of interest. In the
> fall of 1996 the first version of what was going to become known as 'teqc' (which I coined
> for 'translate, edit, quality check') was nearing a first limited release, a name was yet to
> be decided for it. Up to that point I had been just referring to it internally as 'rt' for
> 'RINEX Tool' -- or, in my more cynical moments, as 'RINEX Analysis Tool' or 'rat' -- but it
> was increasingly clear that 'rt' didn't really capture what it was all about. Given that
> the core quality check algorithms in it had come from the earlier UNAVCO code 'QC' (for
> 'quality check'), which itself was quite well known in the early and mid-1990's, and given
> that Chuck had first hired me to replace 'QC' with a more stable and portable C or C++ code
> base, Chuck suggested naming it 'QCplus'. However, as you all should know by now, the default
> behaviour with no options is to try to read some input and output RINEX, and in order to do a
> quality check on the input you need to use the '+qc' option. After thinking about this
> suggestion for about two seconds, I told Chuck there was no way in hell I was going to spend
> years explaining to people that in order to do a quality check one would have to execute
> the command `QCplus +qc ...` -- so then I came up with the 'teqc' acronym. (All true.)
> Well, partners, it's now time for me to saddle up and take off in search of new adventures,
> new challenges, and new horizons ... Gotta ride. Daylight's burning.
> Louis H. Estey, Ph.D. (retired)
> "If the universe is the answer, what is the question?"
> -- Leon Lederman
> * That's the North American western use of the word 'wrangle'.
> teqc mailing list
> teqc at postal.unavco.org
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