The following example is a string representing a geographic coordinate system based on the WGS 1984 datum. GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137, 298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433]] ...
Examples of projected coordinate systems include Universal Transverse Mercator (UTM),State Plane Coordinate System (SPCS), and Lambert Conformal Conic. Geographic Coordinate System Units The units of measurement for degrees of longitude (x-coordinates) and degrees of latitude (y-coordinates) in geograph...
Geographic Coordinate System AGeographic Coordinate System(GCS) is a coordinate system which uses a three-dimensional spherical surface (ellipsoid) to define locations on the earth. A common choice of coordinates is latitude and longitude. For example, Leuven, Belgium is located on 50°52'47" Nort...
poTransform.reset(OGRCreateCoordinateTransformation(currentShpSR, targetCS));elseneedProjection=false; }else{// The user should probably be made aware of this warning.Log::Inst().Warning("(Warning) Unknown type of coordinate system.");returnfalse; } }else{//studyController->SetProjectData(false...
開發者ID:cesarargul,項目名稱:QGIS,代碼行數:58,代碼來源:qgscoordinatetransform.cpp QList< QList<int> > QgsCoordinateTransform::datumTransformations(constQgsCoordinateReferenceSystem& srcCRS,constQgsCoordinateReferenceSystem& destCRS ) { QList< QList<int> > transformations; ...
Coordinate systemData miningDatumEllipsoidGeographic information systemsGeoidGeomaticsGeoreferencingGlobal Positioning SystemLocation based serviceThe role of spatial data for decision making has increased the need for geographic information systems. This chapter starts by briefly describing the theory of geographic...
13. The Cartesian coordinate system and the geographic coordinate system used on the earth's surface are common examples of coordinate systems. 用于地球表面的笛卡尔坐标系统和地理坐标系统是坐标系统的通用例子。 14. geographic是什么意思 14. EA PROVIDES THE SERVICE ON A COMMERCIALLY REASONABLE BASIS AND...
named WIND. These subdirectories and files are hidden from the user while working in GRASS. When defining a new location, GRASS automatically creates a special mapset called PERMANENT, which is used to store the default spatial extent, the coordinate system definitions and which may be used to...
A geographic cells raster reference object contains information that describes the relationship between a geographic coordinate system and anintrinsic coordinate systemthat is anchored to the columns and rows of a 2-D spatially referenced raster grid or image of cells. ...
crs = fc.getSchema().getGeometryDescriptor().getCoordinateReferenceSystem();if(crs ==null) {// todo - check me! Why can this happen??? (nf)crs = DefaultGeographicCRS.WGS84; }finalReferencedEnvelope envelope =newReferencedEnvelope(fc.getBounds(), crs); ...