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CHANGELOG.md

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  • Was losing track of header interval information
    • Also, turn parser-computed intervals into floats (from timedeltas) for proper comparison with the interval read from the header
  • We can't check for phase shift vs. the previous record if there was no measurement for this satellite in the previous record!
  • Accept .z or .Z endings for gzipped files
  • Remove numpy dependency (replace sum(X) by reduce(add, X))

Version 0.4.3, August 27 2009

  • Use ''.ljust() to pad to 80 spaces instead of formatting operation
  • Disable command-line option "-p" for pickling, since it's broken.
  • Added unused "line" argument to gpsdata.showwarn() to avoid Python 2.6 warning
  • Added README
  • If matplotlib is not available, disable the "-i" plotting option in readfile.py command-line usage, rather than crashing (which also prevented in-Python usage of read_file())

Version 0.4.2, August 5 2009

  • Was misreading years with all four digits present
  • Wow, backticks are better than str()!
  • Changes to operate with mod_python (Juan Carlos Espinoza):
    • Added readfile.index() function
    • Special behaviour in plotter.plot if fname == 'web'
  • Python 2.4 compatibility:
    • Remove str.rpartition() in readfile
    • Remove try-except-finally in gpstime
    • Remove conditionals (x if foo else y)
    • Replace datetime.strptime with time.strptime in gpstime
    • Remove epilog from readfile OptionParser (wasn't up to date anyway)
    • Add rinex.header.field.__deepcopy__ (2.4 barfed on function references)
  • Remove plotter.MarkerNames class, just leave in the module (I am too class-crazy)
  • Add plotter.colorplot() to plot lines with meaningfully colored dots
  • Make system-determined leap seconds ints, not timedeltas (so that comparison with header-derived leap seconds is not bogus)
  • Record filename in metadata, report in header summary

Version 0.4.1, August 2 2009

  • Read marker name -> location title information from stations.dat (also contains station coordinates, potentially useful elsewhere)
  • Command line: When specifying --image without --output,
    • We were calling plot() with a nonexistent variable
    • We were using fig.show() for display, which is not in all matplotlib backends (replaced by matplotlib.pyplot.show())

Version 0.4, August 1 2009

  • Create plotter.py module with function, plot(), to plot a given observation for all satellites, outputting to given filename (extension determines format) (using matplotlib)
  • Split gpsdata.iter() to gpsdata.iterdict() and gpsdata.iterlist()
  • Eliminate gpsdata.iterepochs() in favor of gpsdata.iterlist('epoch') or gpsdata.iterdict('epoch')
  • Create utility.py module for "useful" classes that didn't belong in gpsdata or readfile: value, listvalue, fileread so far
    • This fixes a recursive dependency problem in import readfile
  • Comply PEP 8
    • Hence renamed package from GPSData to gpsdata
      • So main class is now gpsdata.gpsdata.GPSData
  • Count number of header sections in RINEX file
  • Track "phase connected arcs", ie periods between cycle slips, for each satellite.
    • New functions in gpsdata.GPSData: breakphase, checkphase, sanearcs
  • RINEX: numrec in event flag 5 observation header indicates header lines following; process them.
    • Since "epoch is significant" for flag 5, mark these header values with the epoch.
    • While I'm at it, mark all header values with the record number and line number.
    • Also mark records between flag 2 (start moving) and flag 3 (stop) as "in motion."
  • Correctly consume any PRN list continuation lines for event flag 6 (Cycle Slip Records, which we ignore.)

Version 0.3.1, July 21 2009

  • Fix operation for tarfiles (was using nonexistent next()): Introduce readfile.fileread class to wrap various file-like objects
  • record.ptec(prn) returns (uncorrected, instantaneous, slant) phase TEC. record.ctec(prn) returns code TEC
  • Include leap seconds, observation interval in header summary

Version 0.3, July 20 2009

  • Don't crash on unknown format input files
  • Output comments in header summary
  • Fix bug in gpsdatetime vs. datetime equality comparison
  • Check or supply leap seconds header info when a leap second occurs during the observations
  • Nicer warning output
  • Fix bug introduced since 0.2 in handling multiple files
  • Implement Compact RINEX processing in rinex.py, remove crx2rnx (eliminates platform dependency on Linux x86)
  • Rename GPSData.rnx to GPSData.meta in lame attempt to appear less RINEX-dependent
  • Forgive incorrect spacing in RINEX header labels
  • Split out readfile.py, added support for multiple formats (currently only RINEX available)
  • Determine interval of observations (for comparison with header)
  • GPSData.sats() returns set of satellite PRNs in this data
  • GPSData.iter() allows iteration over a given satellite, observation code, or both; GPSData.iterepochs() iterates over record epochs
  • Fix gpsdatetime unpickling
  • Friendlier error for nonexistent files
  • 2-digit years disambiguated correctly in absence of FIRST/LAST OBS (80-99 -> 1980-1999, 00-79 -> 2000-79)

Version 0.2, July 15 2009

  • Use standard Python datetime for time data, not a home-grown struct
    • Correctly deal with GPS, GLONASS (UTC), Galileo (TAI) time systems
    • Include gpstime.py with useful time zones, leapseconds data
    • gpstime.gpsdatetime is a datetime class allowing UTC offsets which are not whole minutes
    • 2-digit years disambiguated by TIME OF FIRST/LAST OBS
  • Command-line call to rinex.py outputs header info
  • rinex.get_data() tracks some header stats and adds or verifies them

Version 0.1, July 13 2009

  • Initial release