Zusammenfassung
Geometry objects define a spatial location and an associated geometric shape.
Diskussion
Bei vielen Workflows der Geoverarbeitung möchten Sie eventuell bestimmte Vorgänge mit Koordinaten und Geometriedaten ausführen, jedoch nicht unbedingt eine neue (temporäre) FeatureClass erstellen, diese mit Cursorn füllen, die FeatureClass verwenden und dann die vorläufige FeatureClass wieder löschen. Sie können anstelle von Eingabe und Ausgabe auch Geometrieobjekte verwenden und so die Geoverarbeitung vereinfachen. Geometrieobjekte können von Grund auf neu mit Geometry, Multipoint, PointGeometry, Polygon oder PolylineClasses erstellt werden.
During the creation of a geometry object, a simplification process is performed to make the geometry topologically consistent according to its geometry type. For instance, it rectifies polygons that may be selfintersecting or contain incorrect ring orientations. Coordinates may move within the resolution of the geometry's spatial reference.
Syntax
Geometry (geometry, inputs, {spatial_reference}, {has_z}, {has_m}, {has_id})
Parameter  Erläuterung  Datentyp 
geometry  The geometry type.
 String 
inputs  The coordinate information used to create the object. The data type can be Point or Array objects.  Object 
spatial_reference  The spatial reference of the new geometry. (Der Standardwert ist None)  SpatialReference 
has_z  Specifies whether the geometry will be zenabled. (Der Standardwert ist False)  Boolean 
has_m  Specifies whether the geometry will be menabled. (Der Standardwert ist False)  Boolean 
has_id  Specifies whether the geometry will support point IDs. (Der Standardwert ist False)  Boolean 
Eigenschaften
Eigenschaft  Erläuterung  Datentyp 
JSON (Schreibgeschützt)  An Esri JSON representation of the geometry as a string. Tipp:The returned string can be converted to a dictionary using the json module's loads function.  String 
WKB (Schreibgeschützt)  The wellknown binary (WKB) representation for OGC geometry. This property provides a portable representation of a geometry value as a contiguous stream of bytes.  Bytearray 
WKT (Schreibgeschützt)  The wellknown text (WKT) representation for OGC geometry. This property provides a portable representation of a geometry value as a text string. Any true curves in the geometry will be densified into approximate curves in the WKT string.  String 
area (Schreibgeschützt)  The area of a polygon feature. The area is zero for all other feature types.  Double 
centroid (Schreibgeschützt)  The true centroid if it is within or on the feature; otherwise, it is the label point.  Point 
extent (Lesen und schreiben)  The extent of the geometry.  Extent 
firstPoint (Schreibgeschützt)  The first coordinate point of the geometry.  Point 
hasCurves (Schreibgeschützt)  Specifies whether the geometry has a curve.  Boolean 
hullRectangle (Schreibgeschützt)  A spacedelimited string of the coordinate pairs of the convex hull rectangle.  String 
isMultipart (Schreibgeschützt)  Specifies whether the number of parts for the geometry is more than one.  Boolean 
labelPoint (Schreibgeschützt)  The point at which the label is located. This point is always located within or on a feature.  Point 
lastPoint (Schreibgeschützt)  The last coordinate of the feature.  Point 
length (Schreibgeschützt)  The length of the linear feature. The calculation uses 2D Cartesian mathematics. For point and multipoint geometry, the length will be zero. For polygon geometry, the length will be the 2D length of the boundary.  Double 
length3D (Schreibgeschützt)  The 3D length of the linear feature. The calculation uses 3D Cartesian mathematics. For point and multipoint geometry, the length will be zero. For polygon geometry, the length will be the 3D length of the boundary. Vorsicht:The operation does not perform unit conversion between the horizontal and the vertical coordinate systems. The x, y, and z coordinates are assumed to be in the same linear unit. Vorsicht:This property is only available for projected data.  Double 
partCount (Schreibgeschützt)  The number of geometry parts for the feature.  Integer 
pointCount (Schreibgeschützt)  The total number of points for the feature.  Integer 
spatialReference (Schreibgeschützt)  The spatial reference of the geometry.  SpatialReference 
trueCentroid (Schreibgeschützt)  The center of gravity for a feature.  Point 
type (Schreibgeschützt)  The geometry type: polygon, polyline, point, or multipoint.  String 
Methodenübersicht
Methode  Erläuterung 
angleAndDistanceTo (other, {method})  Returns a tuple of angle and distance to a point or polygon. 
boundary ()  Constructs the boundary of the geometry. 
buffer (distance)  Constructs a polygon at a specified distance from the geometry. 
clip (envelope)  Constructs the intersection of the geometry and the specified extent. 
contains (second_geometry, {relation})  Indicates if the base geometry contains the comparison geometry. contains is the opposite of within. Only True relationships are shown in this illustration. 
convexHull ()  Constructs the geometry that is the minimal bounding polygon such that all outer angles are convex. 
crosses (second_geometry)  Gibt an, ob die beiden Geometrien sich in einer Geometrie mit einem geringeren ShapeTyp überschneiden. Zwei Polylinien kreuzen sich, wenn sie nur Punkte gemeinsam haben, von denen mindestens einer kein Endpunkt ist. Eine Polylinie und ein Polygon kreuzen sich, wenn sie im Inneren des Polygons eine Polylinie oder einen Punkt (für eine vertikale Linie) gemeinsam haben, die bzw. der nicht der gesamten Polylinie entspricht. Only True relationships are shown in this illustration. 
cut (cutter)  Splits this geometry into a part left of the cutting polyline, and a part right of it. When a polyline or polygon is cut, it is split where it intersects the cutter polyline. Each piece is classified as left of or right of the cutter. This classification is based on the orientation of the cutter line. Parts of the target polyline that do not intersect the cutting polyline are returned as part of the right of result for that input polyline. If a geometry is not cut, the left geometry will be empty (None). 
densify (method, distance, {deviation})  Creates a geometry with added vertices. 
difference (other)  Constructs the geometry that is composed only of the region unique to the base geometry but not part of the other geometry. The following illustration shows the results when the red polygon is the source geometry. 
disjoint (second_geometry)  Gibt an, ob die Basis und die Vergleichsgeometrie keine gemeinsamen Punkte aufweisen. Zwei Geometrien überschneiden sich, wenn disjoint den Wert False zurückgibt. Only True relationships are shown in this illustration. 
distanceTo (other)  Returns the minimum distance between two geometries. The distance is in the units of the geometry's spatial reference. If the geometries intersect, the minimum distance is 0. Both geometries must have the same projection. 
equals (second_geometry)  Indicates if the base and comparison geometries are of the same shape type and define the same set of points in the plane. This is a 2D comparison only; M and Z values are ignored. Only True relationships are shown in this illustration. 
generalize (max_offset)  Creates a new simplified geometry using a specified maximum offset tolerance. 
getArea ({method}, {units})  Returns the area of the feature using a measurement method. 
getLength ({method}, {units})  Returns the length of the feature using a measurement method. 
getPart ({index})  Returns an Array object of Point objects for a particular part of the geometry if an index is specified. If an index is not specified, an Array object containing an Array of Point objects for each geometry part is returned. The getPart method is equivalent to indexing an object; that is, obj.getPart(0) is equivalent to obj[0]. 
intersect (other, dimension)  Constructs a geometry that is the geometric intersection of the two input geometries. Different dimension values can be used to create different shape types. The intersection of two geometries of the same shape type is a geometry containing only the regions of overlap between the original geometries. For faster results, test if the two geometries are disjoint before calling intersect. 
measureOnLine (in_point, {use_percentage})  Returns a measure from the start point of this line to the in_point. 
move ({dx}, {dy}, {dz})  Moves a geometry by specified distances along the x, y, and zaxes to create a new geometry. 
overlaps (second_geometry)  Gibt an, üb die Überschneidung der beiden Geometrien denselben ShapeTyp wie eine der Eingabegeometrien aufweist, aber keiner der Eingabegeometrien entspricht. Only True relationships are shown in this illustration. 
pointFromAngleAndDistance (angle, distance, {method})  Returns a point at a given angle in degrees and distance in the units of the geometry's spatial reference using the specified measurement type. 
positionAlongLine (value, {use_percentage}, {geodesic})  Returns a point on a line at a specified distance from the beginning of the line. 
projectAs (spatial_reference, {transformation_name})  Projects a geometry and optionally applies a geotransformation. To project a geometry, the geometry must have a spatial reference and not an unknown coordinate system. The new spatial reference system passed to the method defines the output coordinate system. If either spatial reference is unknown, the coordinates will not be changed. The z and mvalues are not changed by the projectAs method. 
queryPointAndDistance (in_point, {as_percentage})  Finds the point on the polyline nearest to the in_point and the distance between those points. It also returns information about the side of the line the point is on as well as the distance along the line where the nearest point occurs. 
scale ({origin}, {sx}, {sy}, {sz})  Scales a geometry from a specified origin by specified factors along the x, y, and zaxes to create a new geometry. The position of a transformed point (or vertex) is given by
The transformation is applied relative to the origin, so that the origin remains stationary while the geometry expands or contracts around it. The position and the direction of the expansion or contraction for the resulting geometries is significantly affected by the origin. The following describes a few possible choices for the origin and its affect on the output:

segmentAlongLine (start_measure, end_measure, {use_percentage})  Returns a Polyline between start and end measures. Similar to Polyline.positionAlongLine but will return a polyline segment between two points on the polyline instead of a single point. 
snapToLine (in_point)  Returns a new point based on in_point snapped to this geometry. 
symmetricDifference (other)  Constructs the geometry that is the union of two geometries minus the instersection of those geometries. The two input geometries must be the same shape type. 
touches (second_geometry)  Indicates if the boundaries of the geometries intersect. Two geometries touch when the intersection of the geometries is not empty, but the intersection of their interiors is empty. For example, a point touches a polyline only if the point is coincident with one of the polyline end points. Only True relationships are shown in this illustration. 
union (other)  Constructs the geometry that is the settheoretic union of the input geometries. The two geometries being unioned must be the same shape type. 
within (second_geometry, {relation})  Indicates if the base geometry is within the comparison geometry. within is the opposite operator of contains. Only True relationships are shown in this illustration. The base geometry is within the comparison geometry if the base geometry is the intersection of the geometries and the intersection of their interiors is not empty. within is a Clementini operator, except in the case of an empty base geometry. 
Methoden
angleAndDistanceTo (other, {method})
Parameter  Erläuterung  Datentyp 
other  The second geometry. If the geometry is a polygon, the distance is measured to the centroid of the polygon.  PointGeometry 
method  The method used to measure distance.
(Der Standardwert ist GEODESIC)  String 
Datentyp  Erläuterung 
tuple  Returns a tuple of angle (in degrees) and distance (in meters) to another point. 
boundary ()
Datentyp  Erläuterung 
Object  A polygon's boundary is a polyline. A polyline's boundary is a multipoint, corresponding to the endpoints of the line. A point or multipoint's boundary is an empty point or multipoint. 
buffer (distance)
Parameter  Erläuterung  Datentyp 
distance  The buffer distance. The buffer distance is in the same units as the geometry that is being buffered. A negative distance can only be specified against a polygon geometry.  Double 
Datentyp  Erläuterung 
Polygon  The buffered polygon geometry. 
clip (envelope)
Parameter  Erläuterung  Datentyp 
envelope  An Extent object used to define the clip extent.  Extent 
Datentyp  Erläuterung 
Object  An output geometry clipped to the specified extent. 
contains (second_geometry, {relation})
Parameter  Erläuterung  Datentyp 
second_geometry  A second geometry.  Object 
relation  The spatial relationship type.
(Der Standardwert ist None)  String 
Datentyp  Erläuterung 
Boolean 
A return Boolean value of True indicates this geometry contains the second geometry. 
convexHull ()
Datentyp  Erläuterung 
Object  The resulting geometry. The convex hull of a single point is the point itself. 
crosses (second_geometry)
Parameter  Erläuterung  Datentyp 
second_geometry  A second geometry.  Object 
Datentyp  Erläuterung 
Boolean  Der boolesche Rückgabetyp "True" gibt an, dass sich die beiden Geometrien in einer Geometrie mit einem geringeren ShapeTyp schneiden. 
cut (cutter)
Parameter  Erläuterung  Datentyp 
cutter  The cutting polyline geometry.  PolyLine 
Datentyp  Erläuterung 
Geometry  A list of two geometries. 
densify (method, distance, {deviation})
Parameter  Erläuterung  Datentyp 
method  The method of densification.
 String 
distance  The maximum distance between vertices. The actual distance between vertices will usually be less than the maximum distance, as new vertices will be evenly distributed along the original segment. If using a type of DISTANCE or ANGLE, the distance is measured in the units of the geometry's spatial reference. If using a type of GEODESIC, the distance is measured in meters.  Double 
deviation  Densify uses straight lines to approximate curves. You use deviation to control the accuracy of this approximation. The deviation is the maximum distance between the new segment and the original curve. The smaller its value, the more segments will be required to approximate the curve. If using a type of DISTANCE, the deviation is measured in the units of the geometry's spatial reference. If using a type of ANGLE, the deviation is measured in radians. If using a type of GEODESIC, the deviation is not used.  Double 
Datentyp  Erläuterung 
Geometry  The densified geometry. 
difference (other)
Parameter  Erläuterung  Datentyp 
other  A second geometry.  Object 
Datentyp  Erläuterung 
Object  The resulting geometry. 
disjoint (second_geometry)
Parameter  Erläuterung  Datentyp 
second_geometry  A second geometry.  Object 
Datentyp  Erläuterung 
Boolean  Der boolesche Rückgabetyp "True" gibt an, dass die beiden Geometrien keine gemeinsamen Punkte aufweisen. 
distanceTo (other)
Parameter  Erläuterung  Datentyp 
other  A second geometry.  Object 
Datentyp  Erläuterung 
Double  The distance between the two geometries. 
equals (second_geometry)
Parameter  Erläuterung  Datentyp 
second_geometry  A second geometry.  Object 
Datentyp  Erläuterung 
Boolean 
A return Boolean value of True indicates that the two geometries are of the same shape type and define the same set of points in the plane. 
generalize (max_offset)
Parameter  Erläuterung  Datentyp 
max_offset  The maximum offset tolerance.  Double 
Datentyp  Erläuterung 
Geometry  The generalized geometry. 
getArea ({method}, {units})
Parameter  Erläuterung  Datentyp 
method  The method used to measure area.
(Der Standardwert ist GEODESIC)  String 
units  The units in which the area will be calculated.
 String 
Datentyp  Erläuterung 
Double  The area of the feature. By default, for projected coordinate systems, area will be returned in the units of the coordinate system, and for geographic coordinate systems, area will be returned in square meters. 
getLength ({method}, {units})
Parameter  Erläuterung  Datentyp 
method  The method used to measure length.
(Der Standardwert ist GEODESIC)  String 
units  The units in which the length will be calculated.
 String 
Datentyp  Erläuterung 
Double  The length of the feature. By default, for projected coordinate systems, length will be returned in the units of the coordinate system, and for geographic coordinate systems, length will be returned in square meters. 
getPart ({index})
Parameter  Erläuterung  Datentyp 
index  The index position of the geometry.  Integer 
Datentyp  Erläuterung 
Array  The resultant Array object. 
intersect (other, dimension)
Parameter  Erläuterung  Datentyp 
other  The second geometry.  Object 
dimension  The topological dimension (shape type) of the resulting geometry.
 Integer 
Datentyp  Erläuterung 
Object  A new geometry (point, multipoint, polyline, or polygon) that is the geometric intersection of the two input geometries. 
measureOnLine (in_point, {use_percentage})
Parameter  Erläuterung  Datentyp 
in_point  A point (PointGeometry or Point) that is used to measure from the start point of the polyline. If the point does not intersect the line, the function will use the nearest location on the line from the point.  PointGeometry 
use_percentage  If False, the measure will be returned as a distance; if True, the measure will be returned as a percentage. (Der Standardwert ist False)  Boolean 
Datentyp  Erläuterung 
Double  The distance or percentage value. 
move ({dx}, {dy}, {dz})
Parameter  Erläuterung  Datentyp 
dx  The distance the geometry will be moved along the xaxis. (Der Standardwert ist 0.0)  Double 
dy  The distance the geometry will be moved along the yaxis. (Der Standardwert ist 0.0)  Double 
dz  The distance the geometry will be moved along the zaxis. The geometry must be zaware and have zvalues. (Der Standardwert ist 0.0)  Double 
Datentyp  Erläuterung 
Geometry  An output geometry, moved by the specified distances along the x, y, and zaxes. 
overlaps (second_geometry)
Parameter  Erläuterung  Datentyp 
second_geometry  A second geometry.  Object 
Datentyp  Erläuterung 
Boolean  Der boolesche Rückgabetyp True gibt an, dass die Überschneidung der beiden Geometrien dieselbe Dimension wie eine der Eingabegeometrien aufweist. 
pointFromAngleAndDistance (angle, distance, {method})
Parameter  Erläuterung  Datentyp 
angle  The angle in degrees to the returned point.  Double 
distance  The distance in the units of the geometry's spatial reference to the returned point.  Double 
method  PLANAR measurements reflect the projection of geographic data onto the 2D surface (in other words, they will not take into account the curvature of the earth). GEODESIC, GREAT_ELLIPTIC, LOXODROME, or PRESERVE_SHAPE measurement types can be chosen as an alternative if desired.
(Der Standardwert ist GEODESIC)  String 
Datentyp  Erläuterung 
PointGeometry  Returns a point at a given angle and distance in degrees and meters. 
positionAlongLine (value, {use_percentage}, {geodesic})
Parameter  Erläuterung  Datentyp 
value  The distance along the line. If the distance is less than zero, the starting point of the line will be returned; if the distance is greater than the length of the line, the endpoint of the line will be returned.  Double 
use_percentage  Specifies whether the distance is specified as a fixed unit of measure or a ratio of the length of the line. If True, value is used as a percentage; if False, value is used as a distance. For percentages, the value should be expressed as a double from 0.0 (0 percent) to 1.0 (100 percent). (Der Standardwert ist False)  Boolean 
geodesic  Specifies whether the distance measure is geodesic or planar. If True, the distance measure is treated as geodesic; if False, the distance measure is treated as planar. (Der Standardwert ist False)  Boolean 
Datentyp  Erläuterung 
PointGeometry  The point on the line at a specified distance from the beginning of the line. 
projectAs (spatial_reference, {transformation_name})
Parameter  Erläuterung  Datentyp 
spatial_reference  The spatial reference of the projected geometry. This can be a SpatialReference object or the coordinate system name.  SpatialReference 
transformation_name  The geotransformation name. With ArcGIS Pro, if you do not specify a transformation, none will be applied. With ArcGIS Server, if you do not specify a transformation, a fallback transformation will be applied.  String 
Datentyp  Erläuterung 
Object  The projected geometry. 
queryPointAndDistance (in_point, {as_percentage})
Parameter  Erläuterung  Datentyp 
in_point  The input point. Both PointGeometry and Point objects are accepted.  PointGeometry 
as_percentage  If False, the measure will be returned as a distance; if True, the measure will be returned as a percentage. (Der Standardwert ist False)  Boolean 
Datentyp  Erläuterung 
tuple  Returns a tuple that includes the following:
Distances are measured in the units of the geometry's spatial reference. 
scale ({origin}, {sx}, {sy}, {sz})
Parameter  Erläuterung  Datentyp 
origin  The origin of the transformation. The argument can be either an arcpy.Point object or an arcpy.PointGeometry object. The default origin, arcpy.Point(0.0, 0.0, 0.0), will usually be located outside the target geometry. (Der Standardwert ist arcpy.Point(0.0, 0.0, 0.0))  Point 
sx  The factor that will be used to scale the geometry along the xaxis. (Der Standardwert ist 1.0)  Double 
sy  The factor that will be used to scale the geometry along the yaxis. (Der Standardwert ist 1.0)  Double 
sz  The factor that will be used to scale the geometry along the zaxis. The geometry must be zaware and have zvalues. (Der Standardwert ist 1.0)  Double 
Datentyp  Erläuterung 
Geometry  An output geometry scaled from the specified origin and by specified factors along the x, y, and zaxes. 
segmentAlongLine (start_measure, end_measure, {use_percentage})
Parameter  Erläuterung  Datentyp 
start_measure  The starting distance from the beginning of the line.  Double 
end_measure  The ending distance from the beginning of the line.  Double 
use_percentage  The start and end measures may be specified as fixed units or as a ratio. If True, start_measure and end_measure are used as a percentage; if False, start_measure and end_measure are used as a distance. For percentages, the measures should be expressed as a double from 0.0 (0 percent) to 1.0 (100 percent). (Der Standardwert ist False)  Boolean 
Datentyp  Erläuterung 
PolyLine  The segment of the line between two points. 
snapToLine (in_point)
Parameter  Erläuterung  Datentyp 
in_point  A point (PointGeometry or Point) to be snapped to the line.  PointGeometry 
Datentyp  Erläuterung 
PointGeometry  The snapped point. 
symmetricDifference (other)
Parameter  Erläuterung  Datentyp 
other  A second geometry.  Object 
Datentyp  Erläuterung 
Object  The resulting geometry. 
touches (second_geometry)
Parameter  Erläuterung  Datentyp 
second_geometry  A second geometry.  Object 
Datentyp  Erläuterung 
Boolean  A return Boolean value of True indicates the boundaries of the geometries intersect. 
union (other)
Parameter  Erläuterung  Datentyp 
other  A second geometry.  Object 
Datentyp  Erläuterung 
Object  The resulting geometry. 
within (second_geometry, {relation})
Parameter  Erläuterung  Datentyp 
second_geometry  A second geometry.  Object 
relation  The spatial relationship type.
(Der Standardwert ist None)  String 
Datentyp  Erläuterung 
Boolean  A return Boolean value of True indicates this geometry is contained within the second geometry. 
Codebeispiel
When you set the output parameter of a geoprocessing tool to an empty Geometry object, the tool will return a list of Geometry objects.
import arcpy
# Run the Copy Features tool, setting the output to the geometry object.
# geometries is returned as a list of geometry objects.
geometries = arcpy.CopyFeatures_management("c:/data/streets.shp",
arcpy.Geometry())
# Walk through each geometry, totaling the length
length = 0
for geometry in geometries:
length += geometry.length
print("Total length: {0}".format(length))