[teqc] Re: compact plots

Richard B. Langley lang at UNB.ca
Thu Jun 26 09:52:06 MDT 2008

Not sure it would work on giant files, but I have an awk script running under
UNIX (Mac flavour but should work on other systems) that converts a teqc
compact file to something readable by Excel (which has number of records
limitations,I think) and gnuplot (no limit, I think). Attached is a resulting
gnuplot example.
-- Richard Langley
   Professor of Geodesy and Precision Navigation

On Thu, 26 Jun 2008, Lou Estey wrote:

>> Dear Lou,
>> I would like graphically view .ele files.  I have tried using the
>> programs listed as 'QC viewers' (QCVIEW, GT, QC2SKY) on the UNAVCO
>> software page, but they all return errors.  Example from the use of QCVIEW:
>> --------------------------------------------------------------------
>> D:\Work\Purdue\GPS\TYLER_~1\NETRS_~1\RF0520~1.053\PU04>qcview
>> PU04_2008_53.ele
>> Could not open file 'PU04_2008_53.ele'
>> No files to plot
>> Version date: 06/12/94
>> --------------------------------------------------------------------
>> The original .ele file is slightly over 20MB, created by converting a
>> 5Hz .T00 NetRS file (.T00 converted to .dat using RUNPKR00 then to rinex
>> using teqc).  I am sending a truncated copy with this email.
>> Should these programs work?  Do you know of any other existing method
>> to   plot the compact files?
>> Thanks for your help.
>> Best Regards,
>> Tyler
> > --
> > Tyler Lulich
> > Graduate Research Assistant
> >
> > Purdue University
> > School of Aeronautics and Astronautics
> > Neil Armstrong Hall of Engineering
> > 701 West Stadium Avenue
> > West Lafayette, Indiana 47907
> >
> > +1.715.209.5767
> > lulich at purdue.edu
>hi Tyler,
>I didn't let your entire email go to the teqc list due its size w/ attachments,
>but you are asking some good questions.
>The last time I used qcview was years ago -- probably on Windows 95 or 98 --
>and it did still work then.  Maybe Jim Johnson, the author of qcview and the
>Solaris equivalent (gt), might care to comment, but I suspect Jim would be
>shocked if it did still work on modern Windows systems with 20 MB files.
>One or two other users have commented that they have had trouble with Marco
>Roggero's QC2SKY program, too.
>I haven't heard any complaints about Steve Hilla's cf2ps, but that requires
>installing GMT ... and the potential energy barrier for that exercise is
>probably a little too high for many GPS users.  (But you're a graduate
>student -- lots of energy to burn! ;)
>I've actually been pushing for UNAVCO to put some resources toward a new
>graphical interface for the qc information for, oh, about 11-12 years now.
>Back then, the direction might have been a Java app, but we were dubious
>about cross-platform support for all OSs that teqc was being compiled
>for at that time (Solaris, HPUX, SGI IRIX, IBM AIX, DEC OSFI, Linux,
>Windows).  And personally, I'm now glad we didn't go that route.
>The best modern solution, I think, would be a compiled Flex app run in
>a Flash plug-in in your browser (e.g. Firefox, Safari on Macs, and yes,
>even IE on Windows -- assuming you are not using something else like Firefox).
>Also, I think it would make more sense to have the various qc time series
>all be in a specially designed BINEX record so that only one file would be
>needed for everything and it would be far more compact than the original
>"compact" ASCII files now being generated (which are a legacy from the
>original Fortran QC program developed at UNAVCO).  If you qc users
>think that something like this should be developed by UNAVCO to replace
>the current clunky methodology, I encourage you to let management at
>UNAVCO know.
>The short answer is that, unfortunately, there is no UNAVCO-supported way
>of looking at the current ASCII "compact" plot files generated by teqc.
>Louis H. Estey, Ph.D.              office:  [+001] 303-381-7456
>UNAVCO, 6350 Nautilus Drive           FAX:  [+001] 303-381-7451
>Boulder, CO  80301-5554            e-mail:  lou  unavco.org
>    WWW:  http://www.unavco.org   http://jules.unavco.org
>"If the universe is the answer, what is the question?"
>                                                -- Leon Lederman
>teqc mailing list
>teqc at ls.unavco.org

 Richard B. Langley                            E-mail: lang at unb.ca
 Geodetic Research Laboratory                  Web: http://www.unb.ca/GGE/
 Dept. of Geodesy and Geomatics Engineering    Phone:    +1 506 453-5142
 University of New Brunswick                   Fax:      +1 506 453-4943
 Fredericton, N.B., Canada  E3B 5A3
     Fredericton?  Where's that?  See: http://www.city.fredericton.nb.ca/
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