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TRGLEV

Spatial Services – Department of Finance, Services and Innovation has used computer programs for the least squares adjustment of geodetic survey observations since 1961. 

TRGLEV (Trigonometrical Levelling Adjustment) was first implemented in 1982 and although developed primarily for in-house use it has been widely distributed within the Australian survey industry. Some important features of this software are:

  • 1-dimensional adjustment only
  • all input / output data are text files
  • similar input format and output format to HAVOC program
  • uses the same coordinate systems as HAVOC
  • handles 6000 observations and 1000 stations
  • numerous observation types available
  • computes provisional and adjusted heights
  • provides full statistical analysis
  • applies geoid (ausgeoid09) corrections where required.

The current version 2.6 24 April 2014 is available to download as an executable program (EXE 256.4 KB) only. To run in Windows, use a Command Prompt window or double click.

The documentation 2.6.3 28 April 2014 (PDF 175.6 KB) is also required to assist with data formats and use of the many options available.

Sample data files (ZIP 3.7 KB) are provided to illustrate formats for various observation types.

Please note, that whilst all effort is made to ensure the accuracy and currency of this application, Spatial Services does not accept responsibility for any actions arising from its use.

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