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Digital Leveling

Digital Leveling

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Digital Leveling

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Presentation Transcript

  1. Digital Leveling Section 9 Bluebooking

  2. Purpose • To insure leveling observations meet FGCSC specifications and procedures • To reduce raw leveling data into standard .lvl format and finally to .hgz format for submission to NGS

  3. History • Hand recording observations • VERREC for field recording observations • VFPROC (newrec, editor, abstra, etc.) for DOS • The digital level-Whalen software • Translev – Windows based program

  4. Translev Program Overview • Program installation and configuration • File naming conventions • Processing leveling data • Tools • Web tools • Locus • Project submission

  5. Program Installation • WindowsNT, Windows2000, WindowsXP Professional – Must have administrative privileges • Version numbering-current 4.16.xx • Remove old version before installing the new • After installing, change permissions to read/write for all users • Intermediate updates – all users

  6. File Naming Conventions • Blue Book (.hgz) • Raw (.lev, .raw, .dat, .gsi) • Error Files (.err) • Abstracts (.abs) • Report (.rpt) • Lvl/Bok (.lvl, .bok) • New-minus-old (.nmo) • Statistics (.stt) • Running List (.rlst) • RI Load (_RI.txt)

  7. Flow Chart FLOW CHART

  8. Translating Raw Files • Raw digital level formats - .gsi, .dat, .lev • Other formats-TDS, Digiloop, xml • Must have description file containing names, PIDs, elevations and geographic positions • Entering defaults • Rod/Instrument supporting files

  9. The .lvl File • Editing the .lvl file • Checking the .lvl file • Fixing errors in the .lvl file • Importing the .lvl file to create the *40* series records in the .hgz file

  10. Importing .lvl Files

  11. Creating Abstracts • Date discontinuity errors • Rejections • Rod/Instrument data • Inverse-running length differences • Refraction corrections • The Neighbor File • The Segment File

  12. Tools • Plotting • Creating statistical reports • Creating new-minus-old reports • The RI editor • Astronomic positions • Temperature profile prediction • Renumbering • Finding problems in ASCII files • Time zone calculator

  13. Creating a Plot

  14. Creating a Statistical File

  15. Creating the New-minus-old File

  16. Creating a RI Load File

  17. Position of the Sun and Moon

  18. Diagnosing Problems With ASCII Files

  19. The Time Zone Calculator

  20. Web Tools • Aerial view (Google Earth) • Level projects • LOCUS • Updating files

  21. Level Projects for Marks

  22. Project Checklist • .hgz file created and checked • .lvl file(s) created, checked, combined • Abstract file created & checked • New-minus-old file created • Ties checked • Project report created

  23. Files for Submittal • Description (.dsc) file • Combined raw (.gsi, .lev, or .dat) file • Combined (.bok) file • VERTOBS (.hgz) file • Abstract (.abs) file • Project report (.rpt) file • CD of photos