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GIS Tools
Enter the easting and northing (x and y coordinates) in metres of the point you want to transform:
The Lambert Conic Conformal Projection is used for the conformal mapping of esp. topographic data over large areas.
This transformation is based upon the Geocentric Datum of Australia (GDA).
Lambert to Geographicals Transformation
Geographicals to Lambert Transformation
Script:
The spatial data transformation is performed by a Perl script which has parameters passed to it via the forms interface. The Lambert to Geographicals transformation also makes use of C executables to compute arcsin and arctan functions not available in Perl.
Mathematics:
The transformation algorithm makes use of the equations published in the United States Geological Survey manual - Map Projections Used by the U.S. Geological Survey Bulletin 1532 The transformation has been modified to use the Geocentric Datum of Australia (GDA) as its reference.
Spatial Accuracy:
Depending upon the precision of the entered coordinates, this transformation will compute results to the nearest 10-20 cm (nominal) on the ground.
Future Enhancements:
To cater for Geographicals in both Decimal Degrees (DD) and also Degrees, Minutes and Seconds (DMS). Also an improved latitude computing algorithm and the possibility to cater for transformations based on other spheroids.
For further information contact:
Scientific Coordinator
Spatial Science
info@erin.gov.au