Contents Index

Change Zone

Coordinate Systems
A job can be on a local coordinate system or use a projection of a section of the earth mapped to a geodetic datum.

The Change Zone option will allow the user to convert co-ordinates for all the points in the job from one zone to another within a given datum.

The current datum and zone is displayed in a window and a list box provides a list of alternative zones. To change zone, select from the list in the Target System window and click the transform job button.

To Set Datum, Zone
Use the menu option File/Job Settings to set the datum and zone for the jobcurrent co-ordinate system for the job.
No points are moved/transformed or converted, this just tells the system that the current co-ords are in the specified datum and Zone.

Allowable Datums and Zones

Datum	Zone	Description
None
ATM
AGD
	47-58	Zones 47 - 58
	542-543	ISG Zones 542 - 543
	551-553	ISG Zones 551 - 553
	561-562	ISG Zones 561 - 562
	ACT	ACT in NSW
	ALB84	Albany Grid
	BRO84	Broome Grid
	BCG84	Busselton Coastal Grid
	CARN84	Carnarvon Grid
	CIG84	Christmas Island Grid
	CKI84	Cocos Island Grid
	ESP84	Esperance Grid
	EXM84	Exmouth Grid
	GCG84	Geraldton Coastal Grid
	GOLD84	Goldfields Grid
	JCG84	Jurien Coastal Grid
	KAR84	Karratha Grid
	KUN84	Kununurra Grid
	LCG84	Lancelin Coastal Grid
	MRCG84	Margaret River Coastal Grid
	PCG84	Perth Coastal Grid
	PHG84	Port Headland Grid

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For an explanation of Datums History, click here.