Timothy A. Hanson National Geodetic Survey SSMC III, N/NGS41, Rm East-West Highway Silver Spring, MD USA X121 Translev Presentation by

Translev Designed by Malcolm R. Archer-Shee

What is Translev ? Translev is a computer program that assists in your editing, formatting and checking of raw digital leveling data. Topcon *.lev Wild/Leica *.raw Zeiss/Trimble *.dat

What Does Translev Do? Translev Creates A master (*.HGZ) file a booking (*.BOK) and an editable leveling (*.LVL) files an abstract (*.ABS) file a VERTOBS datasets for submission to the National Geodetic Survey Translev Includes many built-in functions such as predicting temperature differences, refraction corrections, rod corrections and level run plotting. editing routines for “*.LVL” and “VERTOBS” files.

From Start to Finish Install Translev Obtain a Level Line (*.DAT, *.GSI, or *.LEV) Data File Create the (*.HGZ) file within Translev Translate Raw Level Line Data into the *.LVL Format Examine the*.LVL File for Errors Import Additional *.LVL Files & Correct Errors as Needed Create the Abstract (*.ABS) File Check VertObs (*.HGZ) Data Set, Remove the Errors Create Plot & New-Minus-Old Create Project Report & Transmittal – You Are Done!

Install Translev The Translev installation program is available from the NGS for free at /PC_PROD/PARTNERS/index.shtml Download it! /PC_PROD/PARTNERS/index.shtml

Transfer Data Move your Digital Data from your Digital Level to your PC Topcon *.lev Wild/Leica *.raw Zeiss/Trimble *.dat

The HGZ File Create your *.HGZ file! Start Translev: Click File Then New: “L- Number” for the name, store in a directory of your choice.

→ *. LVL Translate your raw level file into the LVL format *.LEV *.GSI *.DAT

Edit *.LVL Defaults Fill in the dialog box. Click “OK”Then Click “Yes” Translev responds by opening an “ Edit Defaults Window ” Add or Correct as needed:

Edit Out Errors Click “OK” 2 3 1

Import any additional LVL file(s) Remove errors as necessary (see Edit Out Errors)Edit Out Errors

Abstract Create the Abstract The abstract file contains section running information starting from a previously described bench mark and finishing at the end of the level line. Preliminary field elevations are computed for all bench marks in the level line. The processor can compare section runnings to ensure that they meet NGS specifications for the survey’s order and class. For leveling specifications see: /FGCS/BlueBook/pdf/Chapter6.pdf /FGCS/BlueBook/pdf/Chapter6.pdf Check the Abstract for Rejections

Check VertObs (.HGZ) data set Correct errors as necessary

Plot the Level Line

New-Minus-Old Comparisons

Review files for necessary data Simply review all information and data for completeness and accuracy. Make or add all the appropriate changes. Be prepared. The review could be a lengthy process depending upon the size of the project, the number or errors discovered and the types of remedies needed.

Create project report for submittal All leveling projects must contain a project report prior to submittal. Be sure all processing has been completed as the project report routine will use project information to create the report. The user will be prompted for various items of information to insert in the project report. To the extent possible, the program will supply most of the required information.

You’re Done! Need Help ? Translev (Back to the Beginning)Translev ?

The “ F1 ” Key – HELP ! Press F1 and search by Contents, Index or Search string.