Projection

Due to different methods of acquiring geographic data, during data processing, it is common to encounter issues with different coordinate systems of the data. At this point, to facilitate operations such as processing, analysis, and display of data in different projected coordinate systems, you can use the projection function provided by SuperMap to perform projection transformations on the data. provides three projection methods, namely reproject dataset, batch reproject, and transform coordinates. Users can choose different methods for projection based on their needs. Among them:

Reproject dataset is primarily suitable for projection of a single dataset. The resulting data after projection will be saved as a new dataset, without altering the source data.
Batch reproject is suitable for simultaneously projecting multiple reproject datasets to match the projection of a specific data source and saving the transformed datasets under that data source.
Transform coordinates is used to transform the coordinate of a point to another coordinate system, obtaining the coordinate values of that point in other coordinate systems.
Calculate transformation model parameters is used to obtain coordinate transformation parameters for different coordinate systems such as Beijing 1954 Coordinate System and Xi'an 1980 Coordinate System by selecting coincident points, using coordinate transformation models, and evaluating accuracy against the China Geodetic Coordinate System 2000 control points. These transformation parameters are then utilized to ultimately convert data results to the China Geodetic Coordinate System 2000.

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