The Data Processing group of the Start tab organizes functions for managing Projections, setting up projections for Datasource and Dataset, and performing Projection Transformation.

Projection Overview : Describe in detail the process of projection and the concepts and principles related to map projection.

Projection Type : introduce the classification method of projection type, one is to classify according to the deformation nature of projection, and the other is to classify according to the composition of projection.

Commonly used projection : Introduced several common map projections, including Mercator projection, Gauss-Krüger projection, UTM projection, Lambert projection and so on.

Description of Reference System Conversion Method : How to use different conversion methods during Projection Transformation.

Type of SuperMap coordinate system : introduce the Planar Coordinate System of SuperMap, Geographic Coordinate System and Projected Coordinate System.

Projection Settings : How to project a type for Datasource or Dataset settings.

Convert Projection : How to perform Projection Transformation on a Datasource or Dataset.