Geometry点线面的初始化

Point（单点）的初始定义：

1.直接定义

public Point createPoint() {Point pt = new Point(0.05, 0.05);return pt;}

2.读取JSON数据

关键函数：OperatorImportFromJson.local().executeexecute(Geometry.Type type, String string);
Type :Geometry.Type寻找，这里是Point
string :JSON字符串

public Point createPointFromJson() throws JsonParseException, IOException {String jsonString = "{\"x\":-106.4453583,\"y\":39.11775,\"spatialReference\":{\"wkid\":4326}}";MapGeometry mapGeom = OperatorImportFromJson.local().execute(Geometry.Type.Point, jsonString);return (Point)mapGeom.getGeometry();}

3.读取GeoJSON数据

OperatorImportFromGeoJson.local().execute(int importFlags, Geometry.Type type, String geoJsonString, ProgressTracker progressTracker);
importFlags ：坐标系
type ：Geometry.Type寻找，这里是Point
geoJsonString ：GeoJSON字符串
progressTracker ：null

public Point createPointFromGeoJson() throws JsonParseException, IOException {String geoJsonString = "{\"type\":\"Point\",\"coordinates\":[-106.4453583,39.11775],\"crs\":\"EPSG:4326\"}";MapGeometry mapGeom = OperatorImportFromGeoJson.local().execute(GeoJsonImportFlags.geoJsonImportDefaults, Geometry.Type.Point, geoJsonString, null);return (Point)mapGeom.getGeometry();}

4.读取WKT数据

OperatorImportFromWkt.local().execute(int import_flags, Geometry.Type type,String wkt_string, ProgressTracker progress_tracker);
import_flags ：同上
Type ：同上
wkt_string ：WKT字符串
progressTracker ：null

public Point createPointFromWKT() throws IOException {String wktString = "Point (-106.4453583 39.11775)";Geometry geom = OperatorImportFromWkt.local().execute(WktImportFlags.wktImportDefaults, Geometry.Type.Point, wktString, null);return (Point)geom;}

PointLearn PointLearn = new PointLearn();
Point p1 = PointLearn.createPoint();
Point p2 = PointLearn.createPointFromWKT();
Point p3 = PointLearn.createPointFromJson();
Point p4 = PointLearn.createPointFromGeoJson();

MultiPoint（多点）的初始定义：

存储样式

{"hasZ" : true | false,"hasM" : true | false,"points": [[<x1>,<y1>,<z1>,<m1>], ... ,[<xn>,<yn>,<zn>,<mn>]],"spatialReference" : {"wkid" : <wkid>}
}

1.MultiPoint类

static MultiPoint createMultipoint1() {MultiPoint mPoint = new MultiPoint();// Add pointsmPoint.add(1, 1);mPoint.add(0.5, -0.5);mPoint.add(1, -1.5);mPoint.add(-1, -1);mPoint.add(-2, -0.5);mPoint.add(-1.5, 1.5);return mPoint;
}

2.from JSON

static MultiPoint createMultipointFromJson() throws JsonParseException, IOException {String jsonString = "{\"points\":[[1,1],[0.5,-0.5],[1,-1.5],[-1,-1],[-2,-0.5],[-1.5,1.5]],"+ "\"spatialReference\":{\"wkid\":4326}}";MapGeometry mapGeom = OperatorImportFromJson.local().execute(Geometry.Type.MultiPoint, jsonString);return (MultiPoint)mapGeom.getGeometry();
}

3.from GeoJSON

static MultiPoint createMultipointFromGeoJson() throws JsonParseException, IOException {String geoJsonString = "{\"type\":\"MultiPoint\","+ "\"coordinates\":[[1,1],[0.5,-0.5],[1,-1.5],[-1,-1],[-2,-0.5],[-1.5,1.5]],"+ "\"crs\":\"EPSG:4326\"}";MapGeometry mapGeom = OperatorImportFromGeoJson.local().execute(GeoJsonImportFlags.geoJsonImportDefaults, Geometry.Type.MultiPoint, geoJsonString, null);return (MultiPoint)mapGeom.getGeometry();
}

4.from WKT

static MultiPoint createMultipointFromWKT() throws JsonParseException, IOException {String wktString = "MULTIPOINT ((1 1),(0.5 -0.5),(1 -1.5),(-1 -1),(-2 -0.5),(-1.5 1.5))";Geometry geom = OperatorImportFromWkt.local().execute(WktImportFlags.wktImportDefaults, Geometry.Type.MultiPoint, wktString, null);return (MultiPoint)geom;
}

Polyline 的初始定义

1.Polyline类

static Polyline createPolyline1() {Polyline line = new Polyline();// Path 1line.startPath(6.9, 9.1);line.lineTo(7, 8.8);// Path 2line.startPath(6.8, 8.8);line.lineTo(7, 9);line.lineTo(7.2, 8.9);line.lineTo(7.4, 9);// Path 3line.startPath(7.4, 8.9);line.lineTo(7.25, 8.6);line.lineTo(7.15, 8.8);return line;}

2.from JSON

static Polyline createPolygonFromJson() throws JsonParseException, IOException {String jsonString = "{\"paths\":[[[6.8,8.8],[7,9],[7.2,8.9],[7.4,9]],"+ "[[7.4,8.9],[7.25,8.6],[7.15,8.8]],[[6.9, 9.1],[7, 8.8]]],"+ "\"spatialReference\":{\"wkid\":4326}}";MapGeometry mapGeom = OperatorImportFromJson.local().execute(Geometry.Type.Polyline, jsonString);return (Polyline)mapGeom.getGeometry();}

3.from GeoJSON

static Polyline createPolylineFromGeoJson() throws JsonParseException, IOException {String geoJsonString = "{\"type\":\"MultiLineString\","+ "\"coordinates\":[[[6.8,8.8],[7,9],[7.2,8.9],[7.4,9]],"+ "[[7.4,8.9],[7.25,8.6],[7.15,8.8]],[[6.9, 9.1],[7, 8.8]]],"+ "\"crs\":\"EPSG:4326\"}";MapGeometry mapGeom = OperatorImportFromGeoJson.local().execute(GeoJsonImportFlags.geoJsonImportDefaults, Geometry.Type.Polyline, geoJsonString, null);return (Polyline)mapGeom.getGeometry();}

4.from WKT

static Polyline createPolylineFromWKT() throws JsonParseException, IOException {String wktString = "MULTILINESTRING ((6.9 9.1,7 8.8),(6.8 8.8,7 9,7.2 8.9,7.4 9),(7.4 8.9,7.25 8.6,7.15 8.8))";Geometry geom = OperatorImportFromWkt.local().execute(WktImportFlags.wktImportDefaults, Geometry.Type.Polyline, wktString, null);return (Polyline)geom;}
}

Polygon的初始定义

1.Polygon类

public static Polygon createPolygon1()
{Polygon poly = new Polygon();// clockwise => outer ringpoly.startPath(0, 0);poly.lineTo(-0.5, 0.5);poly.lineTo(0.5, 1);poly.lineTo(1, 0.5);poly.lineTo(0.5, 0);// holepoly.startPath(0.5, 0.2);poly.lineTo(0.6, 0.5);poly.lineTo(0.2, 0.9);poly.lineTo(-0.2, 0.5);poly.lineTo(0.1, 0.2);poly.lineTo(0.2, 0.3);// islandpoly.startPath(0.1, 0.7);poly.lineTo(0.3, 0.7);poly.lineTo(0.3, 0.4);poly.lineTo(0.1, 0.4);return poly;
}

2.from JSON

static Polygon createPolygonFromJson() throws JsonParseException, IOException
{String jsonString = "{\"rings\":[[[0.5,0.2],[0.6,0.5],[0.2,0.9],[-0.2,0.5],[0.1,0.2],[0.2,0.3],[0.5,0.2]],"+ "[[0.0,0.0],[-0.5,0.5],[0.0,1.0],[0.5,1.0],[1.0,0.5],[0.5,0.0],[0.0,0.0]],"+ "[[0.1,0.7],[0.3,0.7],[0.3,0.4],[0.1,0.4],[0.1,0.7]]],"+ " \"spatialReference\":{\"wkid\":4326}}";MapGeometry mapGeom = OperatorImportFromJson.local().execute(Geometry.Type.Polygon, jsonString);return (Polygon)mapGeom.getGeometry();
}

3.from GeoJSON

static Polygon createPolygonFromGeoJson() throws JsonParseException, IOException
{String geoJsonString = "{\"type\":\"MultiPolygon\","+ "\"coordinates\":[[[[0.0,0.0],[-0.5,0.5],[0.0,1.0],[0.5,1.0],[1.0,0.5],[0.5,0.0],[0.0,0.0]],"+ "[[0.5,0.2],[0.6,0.5],[0.2,0.9],[-0.2,0.5],[0.1,0.2],[0.2,0.3],[0.5,0.2]]],"+ "[[[0.1,0.7],[0.3,0.7],[0.3,0.4],[0.1,0.4],[0.1,0.7]]]],"+ "\"crs\":\"EPSG:4326\"}";MapGeometry mapGeom = OperatorImportFromGeoJson.local().execute(GeoJsonImportFlags.geoJsonImportDefaults, Geometry.Type.Polygon, geoJsonString, null);return (Polygon)mapGeom.getGeometry();
}

4.from WKT

static Polygon createPolygonFromWKT() throws JsonParseException, IOException
{String wktString = "MULTIPOLYGON (((0.1 0.7, 0.1 0.4, 0.3 0.4, 0.3 0.7, 0.1 0.7)),"+ "((0 0, 0.5 0, 1 0.5, 0.5 1, 0 1, -0.5 0.5, 0 0),"+ "(0.5 0.2, 0.2 0.3, 0.1 0.2, -0.2 0.5, 0.2 0.9, 0.6 0.5, 0.5 0.2)))";Geometry geom = OperatorImportFromWkt.local().execute(WktImportFlags.wktImportDefaults, Geometry.Type.Polygon, wktString, null);return (Polygon)geom;

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Geometry点线面的初始化

Point（单点）的初始定义：

MultiPoint（多点）的初始定义：

Polyline 的初始定义

Polygon的初始定义

Geometry点线面的初始化相关推荐

最新文章

热门文章

Geometry点线面的初始化

Point（单点） 的初始定义：

MultiPoint（多点） 的初始定义：

Polyline 的初始定义

Polygon的初始定义

Geometry点线面的初始化相关推荐

最新文章

热门文章

Point（单点）的初始定义：

MultiPoint（多点）的初始定义：