转自原文 esriFeatureType与esriGeometryType的区别与联系
esriFeatureType通常用来表示数据的存储结构,即物理层;
esriGeometryType通常用来表示数据的几何形状,即表现层。
esriGeometryType枚举类型详解 |
||
常量 |
值 |
对象 |
esriGeometryNull |
0 |
未知类型(Unknown) |
esriGeometryPoint |
1 |
点(Point) |
esriGeometryMultipoint |
2 |
多点(Multipoint) |
esriGeometryLine |
13 |
线段(Line) |
esriGeometryCircularArc |
14 |
圆弧(CircularArc) |
esriGeometryEllipticArc |
16 |
椭圆弧(EllipticArc) |
esriGeometryBezier3Curve |
15 |
贝兹曲线(BezierCurve) |
esriGeometryPath |
6 |
路径(Path) |
esriGeometryPolyline |
3 |
多段线(Polyline) |
esriGeometryRing |
11 |
环(Ring) |
esriGeometryPolygon |
4 |
多边形(Polygon) |
esriGeometryEnvelope |
5 |
外包(Envelope) |
esriGeometryAny |
7 |
任何类型(Any valid geometry) |
esriGeometryBag |
17 |
任意几何类型的集合(GeometryBag) |
esriGeometryMultiPatch |
9 |
表面几何(MultiPatch) |
esriGeometryTriangleStrip |
18 |
三角带(TriangleStrip) |
esriGeometryTriangleFan |
19 |
三角扇形(TriangleFan) |
esriGeometryRay |
20 |
射线(Ray) |
esriGeometrySphere |
21 |
球体(Sphere) |
esriGeometryTriangles |
22 |
三角形(Triangles) |
esriFeatureType枚举类型详解 |
|||
常量 |
值 |
描述 |
对象 |
esriFTSimple |
1 |
Polygons, polylines, and points representing objects or places that have area, such as water bodies; linear objects, such as rivers; and localized positions, such as houses or sample sites. |
Simple Feature. |
esriFTSimpleJunction |
7 |
Simple junction feature in a geometric network representing point objects, such as a fuse, service point, or telephone pole. |
Simple Junction Feature. |
esriFTSimpleEdge |
8 |
Simple edge feature in a geometric network representing polyline objects, such as primary or secondary overheads. |
Simple Edge Feature. |
esriFTComplexJunction |
9 |
Complex junction feature in a geometric network, not in general use. |
Complex Junction Feature. |
esriFTComplexEdge |
10 |
Complex edge feature in a geometric network representing polyline objects such as primary overheads, which have midspan connectivity. Network resources flow through complex edge without interruption by midspan connectivity. |
Complex Edge Feature. |
esriFTAnnotation |
11 |
Place or object names or identifiers, such as street names, hydrant ID numbers, land values, or elevation. |
Annotation Feature. |
esriFTCoverageAnnotation |
12 |
Place or object names or identifiers, such as street names, hydrant ID numbers, land values, or elevation. Not supported in geodatabases, only supported in coverage datasets. |
Coverage Annotation Feature. |
esriFTDimension |
13 |
Measurements, such as distances, lengths, widths, and depths. |
Dimension Feature. |
esriFTRasterCatalogItem |
14 |
A raster dataset in a raster catalog that has information, such as footprints, names, metadata, and any other user-defined attributes. |
Raster C |
时间: 2024-10-19 09:53:29