com.supermap.data
Class GeoSpatialRefType
- java.lang.Object
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- com.supermap.data.GeoSpatialRefType
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public class GeoSpatialRefType extends java.lang.ObjectDefines the spatial coordinate system type constants.The spatial coordinate system types:To distinguish the planar coordinate system, the geographical coordinate system, the projection coordinate system, in which the geographical coordinate system is also called the latitude and longitude coordinate system.
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Field Summary
Fields Modifier and Type Field and Description static GeoSpatialRefTypeSPATIALREF_EARTH_LONGITUDE_LATITUDEThe geographic coordinate system, also called the latitude and longitude coordinate system.static GeoSpatialRefTypeSPATIALREF_EARTH_PROJECTIONThe projected coordinate system.static GeoSpatialRefTypeSPATIALREF_NONEARTHThe planar coordinate system.
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Field Detail
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SPATIALREF_NONEARTH
public static final GeoSpatialRefType SPATIALREF_NONEARTH
The planar coordinate system. When the coordinate is the planar coordinate system, the projection transformation is not allowed.
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SPATIALREF_EARTH_LONGITUDE_LATITUDE
public static final GeoSpatialRefType SPATIALREF_EARTH_LONGITUDE_LATITUDE
The geographic coordinate system, also called the latitude and longitude coordinate system. The geographic coordinate system is composed of Datum, Central Meridian and an angular unit of measure. In GIS, the unit can be degrees, minutes or seconds. The horizontal direction ranges from -180 to 180 and the vertical direction ranges from -90 to 90.
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SPATIALREF_EARTH_PROJECTION
public static final GeoSpatialRefType SPATIALREF_EARTH_PROJECTION
The projected coordinate system. The projected coordinate system is composed of map projection mode, projection parameters, coordinate unit and geographic coordinate system. SuperMap Objects .NET provides many predefined projection systems which can be used by users directly. In addition, users can customize projection system through this object.
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