QgsPoint latLongSamplePoint = toLatLongTransform.transform( sampleQgsPoint ); QgsFeature samplePointFeature; samplePointFeature.setGeometry( samplePoint ); samplePointFeature.setAttribute("id", nTotalTransects +1); samplePointFeature.setAttribute("station_id", nCreatedTransects +1); samplePointFeature....
}//possibility to transform output points to lat/longQgsCoordinateTransformtoLatLongTransform( mStrataLayer->crs(),QgsCoordinateReferenceSystem(4326, QgsCoordinateReferenceSystem::EpsgCrsId ));//init random number generatormt_srand( QTime::currentTime().msec() ); QgsFeatureRequest fr; fr.setSubset...
1.(Mathematics) a straight line joining the centre of a circle or sphere to any point on the circumference or surface 2.(Mathematics) the length of this line, usually denoted by the symbolr 3.(Mathematics) the distance from the centre of a regular polygon to a vertex (long radius) or ...
to LatLongPairAbbreviated 以緯度和經度表示的位置,使用簡短名稱 『lat』 & 『lon』。 BoundingBox 檢視區,涵蓋檢視區左上角和右下角座標所代表的結果。 展開資料表 名稱類型Description btmRightPoint LatLongPairAbbreviated 以緯度和經度表示的位置,使用簡短名稱 『lat』 & 『lon』。 topLeftPoint Lat...
ID; // id = 0 default value // Or use a builderEx which doesn't need to run on the MCT. MapPointBuilderEx builderEx = new MapPointBuilderEx(1, 2); // do something with the builder builderEx.Y = 3; point2D = builderEx.ToGeometry(); sr = point2D.SpatialReference; // sr =...
Geometry Type: Point Coordinates have Z values: No Coordinates have measures: Yes By including the measures in the points, ESRI is forced to provide a value for the Z when adding the records to SQL. This is due to a requirement that data is loaded in X,Y,Z,M where each value is spa...
GEOMETRYCOLLECTION(POINT(46),LINESTRING(46,710)) POINTZM(11560)POINTM(1180)POINT EMPTY MULTIPOLYGON EMPTY 空间参照系统/WKT 一个表示空间参照系统的WKT字串描述了空间物体的测地基准、大地水准面、坐标系统及地图投影。 WKT在许多GIS程序中被广泛采用。ESRI亦在其shape文件格式(*.prj)中使用WKT。
selectAddGeometryColumn('test','cities','shape',4326,'POINT',2) 4. PostGIS对几何信息的检查 PostGIS可以检查几何信息的正确性,这主要是通过IsValid函数实现的。 以下语句分辨检查了2个几何对象的正确性,显然,(0, 0)点和(1,1)点可以构成一条线,但是(0, 0)点和(0, 0)点则不能构成,这个语句执行以后...
H3_FromLongLat H3_FromPoint H3_Polyfill ST_AddPoint ST_Angle ST_Area ST_AsBinary ST_AsEWKB ST_AsEWKT ST_AsGeoJSON ST_AsHexWKB ST_AsHexEWKB ST_AsText ST_Azimuth ST_Boundary ST_Buffer ST_Centroid ST_Collect ST_Contains ST_ContainsProperly ...
在下文中一共展示了OGRGeometry::toPoint方法的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。 示例1: while ▲点赞 7▼ OGRFeature *OGRSEGUKOOALineLayer::GetNextRawFeature() ...