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DatumTran software

DatumTran transforms typical GIS data files between Australian Geodetic Datums (AGD84 / AGD66) and GDA94. This includes between MGA, AMG and ISG grid (projection) coordinates or geographic (latitude/longitude) positions.

DatumTran also transforms the same file types between GDA94 and ITRF (International Terrestrial Reference Frame). This is currently a 2-stage process using current epoch and ITRF2000(IGS).

The following data file types are supported:

  • MapInfo MIF/MID
  • ARC Export E00
  • Arc Ungenerate files
  • AutoCad DXF
  • Well Known Text (WKT)
  • GENAMAP export (not binary) EE
  • ASCII text
  • CSV (comma separated variables)
  • ESRI shape (binary)

The user is guided through a step-by-step process to transform the positional data held within a file from one datum to another by creating a file identical to the original, but with coordinates in the new datum. The program includes a batch processing option for multiple file selection.

The program uses the following national transformation grid distortion models (NTv2):

  • AGD66 to GDA94: A66 National (13.09.01).gsb
  • AGD84 to GDA94: National A84 (02.07.01).gsb

The program uses an iterative process for the reverse transformation.

A buffer limit within this version limits the number of characters in a line of text to 300. Any characters beyond this will be lost in the transformation.

DatumTran was developed in-house and is available free as a download or on CD-R by contacting SS-SCIMS@finance.nsw.gov.au.

Download DatumTran v1.6 (2 January 2008) (EXE 14.7 MB).

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