ArcGIS projection and coordinate conversion – Program Develop

IGeographicCoordinateSystem gcs = srFactory.CreateGeographicCoordinateSystem ((int) esriSRGeoCSType.esriSRGeoCS_NAD1983), IProjectedCoordinateSystem pcs = srFactory.CreateProjectedCoordinateSystem ((int) esriSRProjCSType.esriSRProjCS_NAD1983N_AmericaLambert), etc.) have created a spatial reference properties, spatial reference defines the data set geographic coordinate system or projection coordinate system, the coordinate system of geographic data in production and application process is meaningless, but due to the coordinate system information is lost, or create a database may result in data format conversion, transfer library ignores the definition of the coordinate system, requiring no coordinate system information data set coordinate system definition. The projection method with some coordinate information allows the data source to convert to another coordinate system, and as the source coordinate system, modify the parameters before the coordinate system as the target of the operation of the projector coordinate system, and then a new IGeographicCoordinateSystem gcs = srFactory.CreateGeographicCoordinateSystem ((int) esriSRGeoCSType.esriSRGeoCS_NAD1983), IProjectedCoordinateSystem pcs = srFactory.CreateProjectedCoordinateSystem ((int) esriSRProjCSType.esriSRProjCS_NAD1983N_AmericaLambert), relatively clear data before and after the conversion spatial reference information the case of ships using this method for the coordinate public static void GeoreferenceRaster (IRasterDataset2 rasterDataset, IPointCollection sourcePoints, IPointCollection targetPoints) Source.


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Last Modified: April 22, 2016 @ 9:10 pm