Feature Description

The Coordinate System Settings dialog supports creating new projected coordinate systems.

Feature Entry

• Image Panel->Dataset Context Menu->Properties->Coordinate System item in properties panel->Reset Coordinate System... button->Coordinate SystemSettings dialog->New Coordinate System dropdown menu->ProjectionCoordinate System button.
• Map Context Menu->Properties->Coordinate System option in MapsProperties panel->Reset Coordinate System... button->Coordinate SystemSettings dialog->New Coordinate System dropdown menu->ProjectionCoordinate System button.

Steps

1. Select the Projected Coordinate System button from the New Coordinate System dropdown menu in the Coordinate System Settings dialog.
2. In the Create the Projected Coordinate System ->Set the Geographic Coordinate System dialog, configure parameters including geographic coordinate system name, datum, reference spheroid, EPSG Code, and prime meridian. For details, refer to Create a New Geographic Coordinate System.
3. Click Next to proceed to the Create the Projected Coordinate System ->Set the Projected Parameters dialog. Parameter descriptions are as follows:
   • Projection Type: Select a projection type from the dropdown menu.
   • Center Meridian: Defines the origin of the geographic X-coordinate.
   • Central Parallel: Defines the origin of the geographic Y-coordinate.
   • First/Second Standard Parallel: In conic projections, the cone intersects Earth along latitude lines called standard parallels. A tangent conic projection requires one standard parallel, while a secant conic projection requires two (first and second standard parallels). The first standard parallel defines the Y-coordinate origin. For tangent projections, the second standard parallel should match the first.
   • First/Second Point Longitude: Used with standard parallels to define the projection's central axis.
   • Azimuth: Defines the central line of the projection.
   • Rectified Angle: Specifies the rectified grid angle value.
   • Parameter Format: Displays parameter values in deg or DD:MM:SS format.
   • Unit: Set coordinate system units from nine options: kilometer, meter, decimeter, centimeter, millimeter, mile, yard, foot, and inch.
   • False Easting: Offsets X-coordinates to avoid negative values, mainly used in Gauss-Krüger, Mercator, and UTM projections.
   • False Northing: Offsets Y-coordinates to avoid negative values, mainly used in Gauss-Krüger, Mercator, and UTM projections.
   • Scale Factor: Indicates scale adjustment during coordinate system conversion.
   • Height of Origin: Specifies elevation at the origin point.
4. After configuring parameters, click OK to complete the new projected coordinate system.

Related Topics

Coordinate System Settings

Create a New Geographic Coordinate System

Create Coordinate System via EPSG Encoding