DNA: Dynamic Network Adjustment

DNA (Dynamic Network Adjustment) is a Windows based software program for least squares adjustment of survey networks. More information is available here.

Student Version

A student version of DNA is available*.  This version is fully featured with the exception that the number of stations that can be adjusted is limited to 150 and it will expire at the end of the year.  The SNAFF (Survey Network Adjustment File Formatter) program is also included. You may download a copy of DNA if you:

  • are a currently enrolled student in the Department of Geomatics.
  • use it only for course related work.

    • A password is required to access the DNA download page.  If you require the password ask your lecturer or email Dr Phil Collier.

    DNA Release History

    Version 1.2 released on 30/7/99:

  • the capability to scale GPS covariance matricies has been added,
  • Pelzer's reliability statistic is computed and printed for each measurement,
  • a couple of minor bugs have been fixed.

    • Version 1.22 released on 10/9/99:
  • the operation and output of the coordinate transformation option has been improved.
  • measurements with a standard deviation of 0 are identified and a default value of 99.9" or 9.9 metres is used.

    • Version 1.26 released on 20/1/2000:
  • fixed minor file handling bug when performing a phased adjustment.

    • Version 1.27 released on 22/3/2000:
  • fixed bug that affected the display of northern hemisphere data.

    • Version 1.29 released on 14/9/2000:
  • fixed bug that occurred when a single horizontal component of a station was held fixed.
  • fixed bug that occurred if a zoom was performed immediately after modifying the option settings.
  • modified plotting so that measurements with the Ignore flag set are displayed with a dashed line.

    • Version 1.30 released on 27/10/2000:
  • fixed bug that occurred if length of the path to an input file exceeded 50 characters.
  • modified install program to include new version of Snaff and to add its icon to the DNA program group.

    • Version 1.41 released on 18/12/2000:
  • added error ellipses.
  • added network simulation.

    • Version 1.52 released on 31/7/2001:
  • upgraded from VB5 to VB6.
  • updated User Manual.
  • Updated Online help files.


    • SNAFF Release History

    SNAFF version 1.20 released on 4/10/2000:

  • added ability to read GPS files generated by Leica Ski-Pro.

    • SNAFF version 1.31 released on 6/2/2001:
  • added ability to compute measurements between stations.

    • SNAFF version 1.40 released on 31/7/2001:
  • modified GPS baseline import function to handle all versions of output from SKI.

    • SNAFF version 1.41 released on 12/11/2001:
  • bug fix to version 1.40 to ensure correct reading of station coordinates.



    • Page maintained by Phil Collier
    Last modified: 12/11/2001