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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 (lat/long) positions.
DatumTran also transforms the same file types between GDA94 and ITRF* (International Terrestrial Reference Framework).
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 on the new datum. The program now 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.
Note: 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 by the NSW Department of Lands and is available free as a download or on CD ROM by contacting gda@lands.nsw.gov.au
Download DatumTran v1.6 (2 January 2008) (EXE file 15 mb).
* Note: ITRF transformation is a two stage process using current epoch and ITRF2000(IGS).
