What datum does Didger use for the UTM coordinate system?

Didger 3 and higher allow you to specify which datum to use for the UTM coordinate system. Didger 2 uses NAD27 datum.


The datum can be changed in Didger 5 using the steps below:

  1. In the Layer Manager, select the layer of interest.
  2. Click Map | Change Projection. 
  3. In the Assign Coordinate System dialog, select the coordinate system. For example, North America NAD83 UTM zone 13N then click the Modify button.
  4. In the Define Coordinate System dialog, change the Datum by clicking the drop down and choosing a new one. 
  5. Click OK in both dialog boxes to save your changes. 


Updated August 6, 2018

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