Utility Programs and Scripts

1
Utility Programs and Scripts

• Instillation
• File conversions
• Plotting
• Analysis tools

2
Utility packages in gamit/globk

• The utilities are located to three places
• /gg/com shell scripts
• /gg/kf/utils programs
• /gg/gamit/utils programs
• Use ls on above to list, grep doc in /com
  to get one-line description of scripts
• Nearly all of the utilities and shell scripts are
  self documenting

3
installation scripts

• sh_get_ftp_info - give ftp addresses
• install_software - installs software
• install_updates - installs updates
• Updates from bowie.mit.edu ftp/pub/gps/updates/inc
  remental_updates
• make_gamit - remakes gamit package
• make_globk -remake globk package
• make_libraries - remakes libraries
• rmfresh - removes all executables and object
  modules from gamit/globk directories

4
Data archiving scripts

• sh_archive_soln - Saves main files from gamit day
  directory in archive structure
• sh_casefold - changes the case of file names
  either to upper (u) or to lower (d)
• sh_cleanup - Cleans up day directories by
  compression and deletion
• sh_crx2rnx - converts Hatinaka compressed files
  to rinex
• sh_rnx2cxr - converts rinex to Hatinaks
  compressed
• sh_dos2unix - Converts dos text files to Unix

5
Plot generation

• sh_enf_to_vel - converts ensum and enfit summary
  files to standard globk velocity file format.
  Allows plotting of globk direct velocity
  estimates with time series velocity estimates
• sh_gamit_atmos - plots the atmospheric delays
  from gamit solutions
• sh_gamit_baseline - plots baseline from gamit
  solutions rather than globk solutions

6
Plot generation (continued)

• sh_glist_gmt - Allows plotting of distribution of
  stations in times
• sh_globk_scatter - plots baseline scatter as
  function of baseline length
• sh_histogram - plots histogram of position
  residuals
• sh_plot_profile - used in conjunction with
  program profile to plot velocities projected on
  to a profile.

7
Plot generation (continued)

• sh_plotcrd - plots coordinates as a function of
  time
• sh_plotvel - draws velocity arrows on a map
• sh_baseline - shows relative postion vectors as a
  function of time

8
File transfer scripts

• sh_get_hfiles - gets ascii hfiles from SOPAC
  (usually igs1, igs2, igs3 the three global
  networks)
• sh_get_nav - gets navigation files (.YYn files)
  from archives
• sh_get_orbits - gets orbits either sp3 or gamit
  g-files (SOPAC only)
• sh_get_raw - Gets raw data for selected sites
  from SOPAC
• sh_get_rinex - Gets rinex data from cddis, sopac
  or unavco
• sh_get_stinfo - Gets updated station.info from
  sopac for the global network

9
Conversion

• sh_glbtosnx - shell to convert binary hfiles to
  sinex (uses glbtosnx)
• sh_l_to_xyz - converts gamit l-lfile to XYZ files
• sh_svdiff - Differential positioning using
  pseudoranges
• sh_svpos - Point positioning using pseudoranges

10
Globk utilities

• /gg/kf/utils
• These are all programs (directory contains source
  code)
• These programs are self documenting

11
Conversion programs

• apr_to_vel - converts a globk apr file to
  velocity format (sigmas are zero)
• doy - doy converts dates to various formats
• TODAY IS
• Date 2002/01/31 2038 hrs, DOY 31 JD
  2452306.3601 MJD 52305.8601
• GPS Week 1151 Day of week 4, GPS Seconds 345600
  Day of Week Thu
• Decimal Year 2002.08455
• gapr_to_l - converts globk apriori file to gamit
  lfile format
• unify_apr - Allows removal of extra stations,
  changes of positions and velocities in globk
  apriori files.

12
Binary h-files and gfiles

• swaph -- switches big-endian to little-endian and
  visa-versa (needed to use SGI binary hfiles on
  Linux systems)
• glbtog -- creates gamit g-files from globk
  solution with orbits
• glbtosnx creates a SINEX file from a globk
  binary h-file run with -h option to get a
  ascii version of the h-file header

13
Velocity field manipulation

• genrelref - Takes standard velocity field file
  and generates one as difference from site in list
  
• (similar to getrel except does not require org
  file with BRAT on. Uses velocity files
  themselves.
• Sigmas may be overestimated.
• velcom - Allows comparison of many velocities
  files.
• produces average values and RMS of values
• velrot - Allows velocity fields in different
  frames to be compared

14
Summary

• Utilities do lots of different tasks
• Often you can use them as template to make your
  own scripts