Map Projection Setup

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Map Projection Setup

This dialog is used to set up the Map Projection for the Project Coordinate System. 
If you select a different projection Type from the combo box or edit any of the values in the Parameter table, your Map Projection Name will automatically have 'Custom' appended. 
You can edit this name but if you choose a name that is a standard Map Projection, the dialog will automatically update all values.

Wikipedia Map Projection.  

Name

This field is editable but the EPSG is read only.  Use the Search

 button to launch the Search Dialog to search for a new Map Projection. 
If you change the Name to a custom name, the EPSG will clear.

Type

The Projection Type combo contains all of the currently supported projection types. 
If you change the projection type, your Map Projection becomes a custom projection. 
The list of supported projection types can be found below.

Parameters

The parameters shown will depend on the selected projection type. 
If you modify parameters of an existing Map Projection, the Name will automatically have 'Custom' appended. 

The possible unit fields that will appear in the table are as follows:

• Angular unit  - This is the unit for angular related parameters such as Latitude of natural origin and Longitude of natural origin
• Scale unit   - This is the unit for scale related parameters such as Scale factor at natural origin
• Linear unit  - This is the unit for length parameters such as False easting and False northing

Horizontal Offset Model

The Horizontal Offset Model combo box supports only the following offset models that are dependent on the Projected Coordinate System you select. 
If there are no horizontal offset models available, the widget will be disabled.

• RDNAPTRANS correctiegrid (2000) 
• RDNAPTRANS correctiegrid (2004)
• RDNAPTRANS correctiegrid (2008)
• BD72LB72,BD72/LB72 correctiegrid (Belgium)

Supported Projection Types