arcgis.geometry.functions module

The functions module is used to take Geometry objects as parameter arguments and return Geometry objects as results.

These functions use spatial references as inputs and outputs. They can be entered as SpatialReference objects or as integer values representing the well-known ID of each reference.

>>> from arcgis.geometry input SpatialReference

>>> sr = SpatialReference(iterable={"wkid": 3857})
>>> function_res = function_name(...
                                 spatial_ref = sr,
                                 ...)

>>> sr = 3857
>>> function_res = function(...
                            in_sr = sr,
                            ...)

For further details and explanation of concepts, see Using Spatial References. Also see the Working with Geometries Introduction guide in the Editing section of the API for Python documentation.

For a complete list of well-known ID values, see Coordinate System PDF

GeometryJob¶

class arcgis.geometry.GeometryJob(future, task_name, jobid=None, task_url=None, notify=False, gis=None, out_wkid=None)¶

cancelled()¶

Return True if the call was successfully cancelled.

Returns: boolean

done()¶

Return True if the call was successfully cancelled or finished running.

Returns: boolean

property ellapse_time¶: Returns the Ellapse Time for the Job

result()¶: returns the job result

running()¶

Return True if the call is currently being executed and cannot be cancelled.

Returns: boolean

Enumerations¶

AreaUnits¶

class arcgis.geometry.functions.AreaUnits(value)¶

Represents the Supported Geometry Service Area Units Enumerations. Example: areas_and_lengths(polygons=[geom],area_unit=AreaUnits.ACRES)

ACRES = {'areaUnit': 'esriAcres'}¶

ARES = {'areaUnit': 'esriAres'}¶

HECTARES = {'areaUnit': 'esriHectares'}¶

SQUARECENTIMETERS = {'areaUnit': 'esriSquareCentimeters'}¶

SQUAREDECIMETERS = {'areaUnit': 'esriSquareDecimeters'}¶

SQUAREFEET = {'areaUnit': 'esriSquareFeet'}¶

SQUAREINCHES = {'areaUnit': 'esriSquareInches'}¶

SQUAREKILOMETERS = {'areaUnit': 'esriSquareKilometers'}¶

SQUAREMETERS = {'areaUnit': 'esriSquareMeters'}¶

SQUAREMILES = {'areaUnit': 'esriSquareMiles'}¶

SQUAREMILLIMETERS = {'areaUnit': 'esriSquareMillimeters'}¶

SQUAREYARDS = {'areaUnit': 'esriSquareYards'}¶

UNKNOWNAREAUNITS = {'areaUnit': 'esriUnknownAreaUnits'}¶

LengthUnits¶

class arcgis.geometry.functions.LengthUnits(value)¶

Represents the Geometry Service Length Units Enumerations Example: areas_and_lengths(polygons=[geom],length_unit=LengthUnits.FOOT)

ARCMINUTE = 9103¶

ARCMINUTECENTESIMAL = 9112¶

ARCSECOND = 9104¶

ARCSECONDCENTESIMAL = 9113¶

BENOIT1895A_CHAIN = 9052¶

BENOIT1895A_FOOT = 9051¶

BENOIT1895A_LINK = 9053¶

BENOIT1895A_YARD = 9050¶

BENOIT1895B_CHAIN = 9062¶

BENOIT1895B_FOOT = 9061¶

BENOIT1895B_LINK = 9063¶

BENOIT1895B_YARD = 9060¶

BRITISH1936FOOT = 9095¶

CENTIMETER = 1033¶

CLARKECHAIN = 9038¶

CLARKEFOOT = 9005¶

CLARKELINK = 9039¶

CLARKEYARD = 9037¶

DECIMETER = 109005¶

DEGREE = 9102¶

FATHOM = 9014¶

FIFTYKMLENGTH = 109030¶

FOOT = 9002¶

FOOT1865 = 9070¶

GERMANMETER = 9031¶

GOLDCOASTFOOT = 9094¶

GON = 9106¶

GRAD = 9105¶

INDIAN1937FOOT = 9081¶

INDIAN1937YARD = 9085¶

INDIAN1962FOOT = 9082¶

INDIAN1962YARD = 9086¶

INDIAN1975FOOT = 9083¶

INDIAN1975YARD = 9087¶

INDIANFOOT = 9080¶

INDIANYARD = 9084¶

INTERNATIONALCHAIN = 9097¶

INTERNATIONALINCH = 109008¶

INTERNATIONALLINK = 9098¶

INTERNATIONALROD = 109010¶

INTERNATIONALYARD = 9096¶

KILOMETER = 9036¶

METER = 9001¶

MICRORADIAN = 9109¶

MIL6400 = 9114¶

MILLIMETER = 1025¶

NAUTICALMILE = 9030¶

ONEFIFTYKMLENGTH = 109031¶

RADIAN = 9101¶

SEARSCHAIN = 9042¶

SEARSFOOT = 9041¶

SEARSLINK = 9043¶

SEARSYARD = 9040¶

STATUTEMILE = 9093¶

SURVEYCHAIN = 9033¶

SURVEYFOOT = 9003¶

SURVEYLINK = 9034¶

SURVEYMILE = 9035¶

SURVEYYARD = 109002¶

UKNAUTICALMILE = 109013¶

USNAUTICALMILE = 109012¶

USSURVEYINCH = 109009¶

USSURVEYROD = 109011¶

Functions¶

areas_and_lengths¶

arcgis.geometry.functions.areas_and_lengths(polygons, length_unit, area_unit, calculation_type, spatial_ref=4326, gis=None, future=False)¶

The areas_and_lengths function calculates areas and perimeter lengths for each Polygon specified in the input array.

Keys	Description
polygons	The list of `Polygon` objects whose areas and lengths are to be computed.
length_unit	The length unit in which the perimeters of polygons will be calculated. If calculation_type is planar, then this argument can be any esriUnits constant string or integer. If calculationType is not planar, then length_unit must be a linear `LengthUnits` constant or string. For example: For meters, use 9001 or LengthUnits.METER For survey miles, use 9035 or LengthUnits.SURVEYMILE If length_unit is not specified, the units are derived from spatial_ref. If spatial_ref is not specified as well, the units are in meters.
area_unit	The area unit in which areas of polygons will be calculated. If calculation_type is planar, then area_unit can be any esriAreaUnits constant. If calculation_type is not planar, then area_unit must be an `AreaUnits` dictionary. For example, for square meters use - {“areaUnit”: “esriSquareMeters”} for square miles use - {“areaUnit”: “esriSquareMiles”} If area_unit is not specified, the units are derived from the spatial_ref. If spatial_ref is not specified, then the units are in square meters.
calculation_type	The type defined for the area and length calculation of the input geometries. The type can be one of the following values: planar - Planar measurements use 2D Euclidean distance to calculate area and length. This should only be used if the area or length needs to be calculated in the given `SpatialReference`. Otherwise, use preserveShape. geodesic - Use this type if you want to calculate an area or length using only the vertices of the `Polygon` and define the lines between the points as geodesic segments independent of the actual shape of the `Polygon`. A geodesic segment is the shortest path between two points on an ellipsoid. preserveShape - This type calculates the area or length of the geometry on the surface of the Earth ellipsoid. The shape of the geometry in its coordinate system is preserved.
spatial_ref	Optional integer. The desiried spatial reference of the output. Integer value is the wkid value of the spatial reference. Default 4326. Note See Using Spatial References for links to comprehensive list of values.
gis	Optional `GIS` object. If no argument provided, the active GIS will be used.
future	Optional boolean. If True, a `GeometryJob` that can be queried will be returned and control returns to the user. If False, a dictionary object with results after the function completes.

Returns: A dictionary with result output if future=False, or a GeometryJob object if future = True.

 >>> fl_item = gis.content.get("<item_id>") #Feature Layer item with polygon later
 >>> poly_lyr = fl_item.layers[0]
 >>> polygon1 = poly_lyr.query(where="objectid=14, as_df=True).SHAPE.loc[0]
 >>> polygon2 = poly_lyr.query(where="objectd=38, as_df=True).SHAPE.loc[0]

 # Usage Example 1
 >>> output_1 = areas_and_lengths(polygons =[polygon1, polygon2],
                                  length_unit = 9001,
                                  area_unit = {"areaUnit": "esriSquareMeters"},
                                  spatial_ref = 3857,
                                  calculation_type = "preserveShape")
 >>> output_1
     {'areas': [7845609.082046935, 52794153.65053841],
      'lengths': [29042.783436295722, 98763.80242520552]}


 # Usage Example 2
 >>> from arcgis.geometry import LengthUnits, AreaUnits
 >>> output_2 = areas_and_lengths(polygons =[polygon1, polygon2,...],
                                  length_unit = LengthUnits.FOOT,
                                  area_unit = AreaUnits.SQUAREFEET,
                                  spatial_ref = {"wkid": 3857}
                                  calculation_type = "planar",
                                  future = True)
>>> trials = 0
>>> while trials < 10:
>>>     if not ft_output.done():
>>>         print("...processing...")
>>>         time.sleep(3)
>>>         trials += 1
>>>     else:
>>>         print(ft_output.result())
>>>         break

...processing...
...processing...
{'areas': [84449433.3236774, 568271540.420404], 'lengths': [95284.72256002533, 324028.2231798081]}

auto_complete¶

arcgis.geometry.functions.auto_complete(polygons=None, polylines=None, spatial_ref=None, gis=None, future=False)¶

The auto_complete function simplifies the process of constructing new Polygon objects that are adjacent to other polygons. It constructs polygons that fill in the gaps between existing polygons and a set of Polyline objects.

Keys	Description
polygons	A List of `Polygon` objects
polylines	A List of `Polyline` objects
spatial_ref	A `SpatialReference` of the input geometries or the integer WKID of the spatial reference.
future	Optional boolean. If True, a `GeometryJob` that can be queried will be returned and control returns to the user. If False, a `Polygon` object will be returned after the function completes.

Returns: If future=False, a Polygon object. If future=True, a GeometryJob object. See code example in areas_and_lengths for code snippet querying the job.

buffer¶

arcgis.geometry.functions.buffer(geometries, in_sr, distances, unit, out_sr=None, buffer_sr=None, union_results=None, geodesic=None, gis=None, future=False)¶

The buffer function creates polygons around each input Geometry in the list at the specified distance.

Note

The options are available to union buffers and to use geodesic distance.

Keys	Description
geometries	The list of `geometries` to buffer.
in_sr	The well-known ID, or a `SpatialReference` object for the input geometries.
distances	The distances that each input `Geometry` will be buffered.
unit	The unit of the buffer distances. * If not specified, the units are derived from buffer_sr. * If buffer_sr is also not specified, the units are derived from in_sr.
out_sr	The well-known ID or the `SpatialReference` object for the returned `geometries`.
buffer_sr	The well-known ID or the `SpatialReference` object in which the `geometries` are buffered.
union_results	Optional boolean. * If True, all geometries buffered at a given distance are unioned into a single (possibly multipart) `Polygon` and the unioned `Geometry` is placed in the output list. The default is False.
geodesic	Optional boolean. If True, buffer the input geometries using geodesic distance. Geodesic distance is the shortest path between two points along the ellipsoid of the earth. If False, the 2D Euclidean distance is used Note The default value depends on the geometry type, unit and buffer_sr arguments. See buffering using GCS and buffering using PCS for details.
future	Optional boolean. If True, a `GeometryJob` will be returned for query and the process returns control to the user. If False, the process waits until completion before returning the output `polygons` The default is False. Note If setting future to True there is a limitation of 6500 geometries that can be processed in one call.

Returns: A list of Polygon objects if future=False, or a GeometryJob object if future=True. Query the job’s result() method to get results.

>>> from arcgis.gis import GIS
>>> from arcgis.geometry import Point, buffer, LengthUnits, AreaUnits

>>> gis = GIS(profile="my_entertprise_user")

>>> flyr_item = gis.content.get("<item_id>")

>>> pts_layer = fl_item.layers[0]

>>> geom1 = Point(pts_layer.query(where="name='Water Dept'").features[0].geometry)
>>> geom2 = Point(pts_layer.query(where="name='Water Satellite'").features[0].geometry)

>>> buffer_res = buffer(geometries =[geom1, geom2],
                 distances=[1000,2000,...],
                 in_sr = {"wkid": 3857},
                 unit = LengthUnits.FOOT,
                 out_sr = 102009,
                 buffer_sr = 102009,
                 union_results = False,
                 geodesic = True,
                 future = False)
>>> buffer_res

[{'rings': [[[-1231272.7177999988, -367594.3729999997], [-1231259.824000001, -367596.90949999914],…
            [-1231285.7353999987, -367592.5767999999], [-1231272.7177999988, -367594.3729999997]]],
            'spatialReference': {'wkid': 102009, 'latestWkid': 102009}},
 {'rings': [[[-1414089.7775999978, -547764.3929000013], [-1414076.887000002, -547767.1926000006],…
            [-1414102.8069999963, -547762.3337000012], [-1414089.7775999978, -547764.3929000013]]],
            'spatialReference': {'wkid': 102009, 'latestWkid': 102009}}]

convex_hull¶

arcgis.geometry.functions.convex_hull(geometries, spatial_ref=None, gis=None, future=False)¶

The convex_hull function is performed on a Geometry Service resource. It returns the minimum bounding shape that contains the input geometry. The input geometry can be a Point, MultiPoint, Polyline , or Polygon object.

Note

The convex hull is typically a polygon but can also be a polyline or point in degenerate cases.

Keys	Description
geometries	A list of `Point`, `MultiPoint`, `Polyline`, or `Polygon` objects. The structure of each geometry in the array is defined the same as the JSON geometry objects returned by the ArcGIS REST API. Note `Geometry` objects can be obtained by querying a `FeatureLayer`, returning it as a Pandas data frame, and then assigning variables to a geometry based on the row index. >>> flyr_item = gis.content.search("*", "Feature Layer")[0] >>> flyr_df = flyr_item.query(where="1=1", as_df=True) >>> geom0 = flyr_df.loc[0].SHAPE
spatial_ref	An integer value, or a `SpatialReference` object defined using the the Well-Known ID (wkid) of the Spatial Reference. Note See Spatial Reference in the Geometry objects help, or Using Spatial References for details on concepts and resources for finding specific wkid values. >>> geom_result = convex_hull(geometries=[geometry_object] spatial_ref=<wkid>) or >>> geom_result = convex_hull(geometries=[geometry_object], spatial_ref={"wkid": <wkid>}) or >>> from arcgis.geometry import SpatialReference >>> sr_obj_wkid = SpatialReference(<wkid>) >>> geom_result = convex_hull(geometries=[geometry_object], spatial_ref=sr_obj_wkid)
future	Optional boolean. If True, a `GeometryJob` will be returned for query and the process returns control to the user. If False, the process waits until completion before returning the output `polygons` The default is False. Note If setting future to True there is a limitation of 6500 geometries that can be processed in one call.

Returns: A list containing the Geometry object of the result, or if future=True, a GeometryJob object. Call the job’s result() method to inspect the process and results.

# Usage Example:

>>> import time
>>> from arcgis.gis import GIS
>>> from arcgis.geometry import convex_hull

>>> gis = GIS(profile="your_organization_profile")

>>> flyr_item = gis.content.get("<item_id for feature layer>")
>>> flyr = flyr_item.layers[0]

>>> df = flyr.query(where="OBJECTID=1", as_df=True)

>>> geom1 = df.loc[0].SHAPE
>>> hull_job = convex_hull(geometries=[geom1],
                           spatial_ref={"wkid": 2056},
                           future=True)

>>> trials = 0
>>> while trials < 5:
>>>     if not hull_job.done():
>>>         print("...processing...")
>>>         time.sleep(3)
>>>         trials += 1
>>>     else:
>>>         print(hull_job.result())
>>>         break

...processing...
{'rings': [[[2664507.7925999984, 1212609.7138999999],
             ...,
            [2664678.264199998, 1212618.6860999987],
            [2664507.7925999984, 1212609.7138999999]]],
 'spatialReference': {'wkid': {'wkid': 2056}}}

cut¶

arcgis.geometry.functions.cut(cutter, target, spatial_ref=None, gis=None, future=False)¶

The geometry service cut function splits a target Polyline or Polygon geometry where it is crossed by the cutter Polyline geometry.

Note

At 10.1 and later, this function calls simplify on the input cutter and target geometries.

Keys	Description
cutter	The `Polyline` that will be used to divide the target geometry into pieces where it crosses the target.
target	The list of `Polyline` or `Polygon` objects to be cut.
spatial_ref	A `SpatialReference` object or well-known ID specifying the spatial reference of the input geometries.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: A List of Geometry objects if future=False, or a GeometryJob if future=True.

densify¶

arcgis.geometry.functions.densify(geometries, spatial_ref, max_segment_length, length_unit, geodesic=False, gis=None, future=False)¶

The densify function adds vertices to Geometry objects at regular intervals.

Keys	Description
geometries	A list of `Polyline` or `Polygon` geometry objects to densify.
spatial_ref	The well-known ID or a `SpatialReference` object for the input `geometries`.
max_segment_len	All segments longer than maxSegmentLength are replaced with sequences of lines no longer than max_segment_length.
length_unit	The length unit of max_segment_length. If geodesic = False, then the units are derived from the spatial_ref argument and the length_unit argument is ignored If geodesic = True, then length_unit must be a linear unit If argument is not provided and the spatial_ref argument is a projected coordinate system, this value is derived from the spatial_ref If argument is not provided and the spatial_ref argument is a geographic coordinate system, the units are meters
geodesic	Optional boolean. If True, then geodesic distance is used to calculate max_segment_length. If False, then 2D Euclidean distance is used to calculate max_segment_length. The default is False.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: If future = False, a list of Geometry objects. If future = True, a GeometryJob object.

difference¶

arcgis.geometry.functions.difference(geometries, spatial_ref, geometry, gis=None, future=False)¶

The difference function constructs the set-theoretic difference between each member of a list of geometries and another Geometry object. In other words, let B be the difference geometry. For each geometry, A, in the input geometry list, it constructs A - B.

Note

The operation calls simplify() on the input geometries

Keys	Description
geometries	An array of `Point`, `MultiPoint`, `Polyline`, or `Polygon` objects.
geometry	A single `Geometry` object of any type and of a dimension equal to or greater than the elements of the geometries argument.
spatial_ref	A `SpatialReference` object or the well-known ID specifying the spatial reference of the input geometries.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: If future = False, a list of Geometry objects. If future = True, a GeometryJob object.

distance¶

arcgis.geometry.functions.distance(spatial_ref, geometry1, geometry2, distance_unit='', geodesic=False, gis=None, future=False)¶

The distance function is performed on a geometry service resource. It reports the 2D Euclidean or geodesic distance between the two Geometry objects.

Keys	Description
geometry1	The `Geometry` object from which the distance is measured. The structure of each geometry in the array is the same as the structure of the JSON geometry objects returned by the ArcGIS REST API.
geometry2	The `Geometry` object to which the distance is measured. The structure of each geometry in the array is the same as the structure of the JSON geometry objects returned by the ArcGIS REST API.
distance_unit	Optional. One of `LengthUnits` enumeration members. See Geometry Service distance for full details.
geodesic	If `geodesic` is set to true, then the geodesic distance between the `geometry1` and `geometry2` geometries is returned. Geodesic distance is the shortest path between two points along the ellipsoid of the earth. If `geodesic` is set to false or not specified, the planar distance is returned. The default value is false.
spatial_ref	A `SpatialReference` of the input geometries Well-Known ID or JSON object
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user.

Returns: If future = False, the distance value beteween the Geometry objects. If future = True, a GeometryJob object.

find_transformation¶

arcgis.geometry.functions.find_transformation(in_sr, out_sr, extent_of_interest=None, num_of_results=1, gis=None, future=False)¶

The find_transformations function is performed on a Geometry service resource. This function returns a list of applicable geographic transformations you should use when projecting geometries from the input SpatialReference to the output SpatialReference. The transformations are in JSON format and are returned in order of most applicable to least applicable. Recall that a geographic transformation is not needed when the input and output spatial references have the same underlying geographic coordinate systems. In this case, findTransformations returns an empty list.

Note

Every returned geographic transformation is a forward transformation meaning that it can be used as-is to project from the input spatial reference to the output spatial reference. In the case where a predefined transformation needs to be applied in the reverse direction, it is returned as a forward composite transformation containing one transformation and a transformForward element with a value of false.

Keys	Description
in_sr	The well-known ID of the `SpatialReference` or a spatial reference JSON object for the input geometries.
out_sr	The well-known ID of the `SpatialReference` or a spatial reference JSON object for the output geometries.
ext_of_interest	The bounding box of the area of interest specified as a JSON envelope.If provided, the extent of interest is used to return the most applicable geographic transformations for the area. Note If a `SpatialReference` is not included in the JSON envelope, the `in_sr` is used for the envelope.
num_of_results	The number of geographic transformations to return. The default value is 1. Note If `num_of_results` has a value of -1, all applicable transformations are returned.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: If future = False, a list of geographic transformations, or if future = True, a GeometryJob object.

from_geo_coordinate_string¶

arcgis.geometry.functions.from_geo_coordinate_string(spatial_ref, strings, conversion_type, conversion_mode=None, gis=None, future=False)¶

The from_geo_coordinate_string function is performed on a Geometry service resource. The function converts an array of well-known strings into xy-coordinates based on the conversion type and SpatialReference supplied by the user. An optional conversion mode parameter is available for some conversion types. See to_geo_coordinate_strings for more information on the opposite conversion.

Keys	Description
spatial_ref	A `SpatialReference` of the input geometries Well-Known ID or JSON object
strings	An array of strings formatted as specified by conversion_type. Syntax: [<string1>,…,<stringN>]
conversion-type	The conversion type of the input strings. Note Valid conversion types are: MGRS - Military Grid Reference System USNG - United States National Grid UTM - Universal Transverse Mercator GeoRef - World Geographic Reference System GARS - Global Area Reference System DMS - Degree Minute Second DDM - Degree Decimal Minute DD - Decimal Degree
conversion_mode	Conversion options for MGRS, UTM and GARS conversion types. Note Valid conversion modes for MGRS are: mgrsDefault - Default. Uses the spheroid from the given spatial reference. mgrsNewStyle - Treats all spheroids as new, like WGS 1984. The 80 degree longitude falls into Zone 60. mgrsOldStyle - Treats all spheroids as old, like Bessel 1841. The 180 degree longitude falls into Zone 60. mgrsNewWith180InZone01 - Same as mgrsNewStyle except the 180 degree longitude falls into Zone 01 mgrsOldWith180InZone01 - Same as mgrsOldStyle except the 180 degree longitude falls into Zone 01 Note Valid conversion modes for UTM are: utmDefault - Default. No options. utmNorthSouth - Uses north/south latitude indicators instead of zone numbers - Non-standard. Default is recommended
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user.

Returns: If future = False, a is of (x,y) coordinates and if future = True, a GeometryJob object.

>>> coords = from_geo_coordinate_string(spatial_ref = "wkid",
                                        strings = ["01N AA 66021 00000","11S NT 00000 62155", "31U BT 94071 65288"],
                                        conversion_type = "MGRS",
                                        conversion_mode = "mgrs_default",
                                        future = False)
>>> coords

[[-117.378, 34.233], [14.387, 58.092], [179.0432, 98.653]]

generalize¶

arcgis.geometry.functions.generalize(spatial_ref, geometries, max_deviation, deviation_unit=None, gis=None, future=False)¶

The generalize simplifies the input geometries using the _Douglas-Peucker_ algorithm with a specified maximum deviation distance.

Note

The output geometries will contain a subset of the original input vertices.

Keys	Description
geometries	Required. The list of `Polyline` or `Polygon` objects to be generalized.
max_deviation	Sets the maximum allowable offset, which determines the degree of simplification. This value limits the distance the output geometry can differ from the input geometry.
deviation_unit	Specifies a unit for the max_deviation argument. Note If not specified, the units are derived from spatial_ref
spatial_ref	A `SpatialReference` object or the Well-Known ID of the input geometries.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: If future = False, a list of the generalized Geometry objects, or if future = True, a GeometryJob object.

intersect¶

arcgis.geometry.functions.intersect(spatial_ref, geometries, geometry, gis=None, future=False)¶

The intersect function constructs the set-theoretic intersection between a list of geometries <arcgis.geometry.Geometry> and another Geometry.

Note

The dimension of each resultant geometry is the minimum dimension of the input geometries list and the object serving as the geometry argument.

Keys	Description
geometries	An list of `Point`, `MultiPoint`, `Polyline`, or `Polygon` objects.
geometry	A single `Geometry` of any type and of a dimension equal to or greater than the elements of geometries.
spatial_ref	A `SpatialReference` object or the Well-Known ID of the input geometries.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: If future = False, the set-theoretic dimension between Geometry objects, or if future = True, a GeometryJob object.

label_points¶

arcgis.geometry.functions.label_points(spatial_ref, polygons, gis=None, future=False)¶

The label_points function calculates an interior Point for each Polygon specified in the input list. These interior points can be used by clients for labeling the polygons.

Keys	Description
polygons	Required list of `Polygon` objects whose label `Point` objects are to be computed.
spatial_ref	A `SpatialReference` object or the well-known ID of the spatial reference of the input polygons.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: If future = False, a list of Point objects, or if future = True, a GeometryJob object.

lengths¶

arcgis.geometry.functions.lengths(spatial_ref, polylines, length_unit, calculation_type, gis=None, future=False)¶

The lengths function calculates the` 2D Euclidean` or geodesic lengths of each Polyline specified in the input array.

Keys	Description
spatial_ref	A `SpatialReference` object or the well-known ID of the spatial reference of the input polygons.
polylines	The list of `Polyline` objects to compute.
length_unit	The length unit in which the lengths are calculated. If calculation_type is planar - value can be any esriUnits constant If calculation_type is planar and argument not provided, the units are derived from `spatial_ref`. If calculationType is not planar, then must be a `LengthUnits` value, such as LengthUnits.METER or LengthUnits.SURVEYMILE If calculationType is not planar and argument not provided, the value is meters
calculation_type	The length calculation type used for the operation. Can be one of the following: planar - uses 2D Euclidean distance to calculate length. Only use this if the length needs to be calculated in the given spatial_ref, otherwise use preserveShape geodesic - uses only the vertices of the polygon and defines the lines between the vertices as geodesic independent of the actual shape of the `Polyline`. This segment is the shortest path between two points on an ellipsoid. preserveShape - uses the surface of the earth ellipsoid to calculate the length. The shape of the geometry in its coordinate system is preserved.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: If future = False, a list of 2D-Euclidean or geodesic lengths in float format, or if future = True, a GeometryJob object.

offset¶

arcgis.geometry.functions.offset(geometries, offset_distance, offset_unit, offset_how='esriGeometryOffsetRounded', bevel_ratio=10, simplify_result=False, spatial_ref=None, gis=None, future=False)¶

The offset function constructs geometries that are offset from the input geometries. If the offset parameter is positive, the constructed offset will be on the right side of the geometry; if negative on the left.

Note

Tracing the geometry from its first vertex to the last will give you a direction along the geometry. It is to the right and left perspective of this direction that the positive and negative parameters will dictate where the offset is constructed. In these terms, you may infer where the offset of even horizontal geometries will be constructed.

Keys	Description
geometries	Required list of `Point`, `MultiPoint`, `Polyline`, or `Polygon` objects.
offset_distance	Specifies the distance for constructing an offset geometry. Note If the `offset_distance` parameter is positive, the constructed offset will be on the right side of the input; if negative on the left.
offset_unit	A unit for offset distance. Use `arcgis.geometry.functions.LengthUnits` options.
offset_how	Determines how outer corners between segments are handled. The three options are as follows: esriGeometryOffsetRounded - Rounds the corner between extended offsets esriGeometryOffsetBevelled - Squares off the corner after a given ratio distance esriGeometryOffsetMitered - Attempts to allow extended offsets to naturally intersect, but if that intersection occurs too far from the corner, the corner is eventually bevelled off at a fixed distance.
bevel_ratio	Value is multiplied by the offset_distance, and determines how far a mitered offset intersection can be located before it is bevelled. when offset_how = esriGeometryOffsetMitered, argument is ignored and 10 is used internally. when offset_how = esriGeometryOffsetBevelled, 1.1 will be used if argument not specified when offset_how = esriGeometryOffsetRounded, argument is ignored
simplify_result	Option boolean. If True, true, then self intersecting loops will be removed. The default is False.
spatial_ref	A `SpatialReference` object of the well-known ID of the spatial reference of the of the input geometries.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: If future = False, a list of Geometry objects, or if future = True, a GeometryJob object.

# Usage Example:

>>> from arcgis.geometry import Polyline, LengthUnits
>>> pline = Polyline(iterable={"paths":[[[0,0],[2000,2000],[3000,0]]],
                               :spatialReference: {"wkid": 2229}})
>>> new_geoms = offset(geometries = [pline],
                       offset_distance = 1000,
                       offset_unit = LengthUnits.METER,
                       offset_how = "esriGeometryOffsetMitered",
                       spatial_ref = {"wkid": 2229})

project¶

arcgis.geometry.functions.project(geometries, in_sr, out_sr, transformation='', transform_forward=False, gis=None, future=False)¶

The project function projects a list of input geometries from the input SpatialReference to the output SpatialReference

Keys	Description
geometries	An list of `Point`, `MultiPoint`, `Polyline`, or `Polygon` objects.
in_sr	The well-known ID of the spatial reference or a `SpatialReference` object specifying the spatial reference of the input geometries.
out_sr	The well-known ID of the spatial reference or a `SpatialReference` object specifying the spatial reference of the output geometries.
transformation	The well-known ID or a dictionary specifying the geographic transformation (also known as datum transformation) to be applied to the projected geometries. Note A transformation is needed only if the output `SpatialReference` contains a different coordinate system from the input spatial reference. For comprehensive list of transformations, see Transformation PDFs.
transform_forward	Optional boolean. Indicates whether or not to transform forward. Note The forward or reverse direction is implied in the name of the transformation. If transformation is specified, a value for this argument must be provided. The default value is False.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: If future = False, a list of Geometry objects in the out_sr coordinate system,, or if future = True, a GeometryJob object.

#Usage Example

>>> result = project(geometries = [{"x": -17568824.55, "y": 2428377.35}, {"x": -17568456.88, "y": 2428431.352}],
                     in_sr = 3857,
                     out_sr = 4326)
    [{"x": -157.82343617279275, "y": 21.305781607280093}, {"x": -157.8201333369876, "y": 21.306233559873714}]

relation¶

arcgis.geometry.functions.relation(geometries1, geometries2, spatial_ref, spatial_relation='esriGeometryRelationIntersection', relation_param='', gis=None, future=False)¶

The relation function determines the pairs of geometries from the input list that participate in the specified spatial relation.

Note

Both lists are assumed to be in the spatial reference specified by the spatial_ref, which is a required argument. Geometry types cannot be mixed within a list.

Note

The relations are evaluated in 2D. z coordinates are not used.

Keys	Description
geometries1	The first list of `Geometry` objects used to compute the relations.
geometries2	The second list of `Geometry` objects used.
spatial_ref	A `SpatialReference` object or the well-known ID of the spatial reference of the geometries.
relation_param	Only relevant when spatial_relation = esriGeometryRelationRelation. The Shape Comparison Language string to be evaluated. See here for more details.
spatial_relation	The spatial relationship to be tested between the two input geometry lists. Options: esriGeometryRelationCross esriGeometryRelationDisjoint esriGeometryRelationIn `esriGeometryRelationInteriorIntersection ` esriGeometryRelationIntersection esriGeometryRelationLineCoincidence esriGeometryRelationLineTouch esriGeometryRelationOverlap esriGeometryRelationPointTouch esriGeometryRelationTouch esriGeometryRelationWithin esriGeometryRelationRelation
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user.

Returns: If future = False, a dictionary of geometry index positions of geometries that participate in the specified relation, or if future = True, a GeometryJob object.

>>> new_res = relation(geometry1 = [{"x":-104.53,"y":34.74},{"x":-63.53,"y":10.23}],
                       geometry2 = [{"rings":[[[-105,34],[-104,34],[-104,35],[-105,35],[-105,34]]]}],
                       spatial_relation = "esriGeometryRelationWithin",
                       spatial_ref = 4326,
                       future = False)
>>> new_res

{'relations': [{"geometry1Index": 0, "geometry2Index": 3},
               {"geometry1Index": 1, "geometry2Index": 0}]}

reshape¶

arcgis.geometry.functions.reshape(spatial_ref, target, reshaper, gis=None, future=False)¶

The reshape function modifies a Polyline or Polygon feature by constructing a polyline over the feature. The feature takes the shape of this reshaper polyline from the first place it intersects the feature to the last.

Keys	Description
target	The `Polyline` or `Polygon` to reshape.
reshaper	The single-part `Polyline` object that reshapes target.
spatial_ref	A `SpatialReference` object or the well-known ID of the spatial reference of the geometries.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user.

Returns: f *future = False, A reshaped Polyline or Polygon object if future = True, a GeometryJob object.

simplify¶

arcgis.geometry.functions.simplify(spatial_ref, geometries, gis=None, future=False)¶

The simplify function permanently alters each of the input geometries so they become topologically consistent.

Keys	Description
geometries	Required list of `Point`, `MultiPoint`, `Polyline`, or `Polygon` objects to simplify.
spatial_ref	A `SpatialReference` object or the well-known ID of the spatial reference of the input and output geometries.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: An array of Geometry objects if future = False, or a GeometryJob object if future = True.

to_geo_coordinate_string¶

arcgis.geometry.functions.to_geo_coordinate_string(spatial_ref, coordinates, conversion_type, conversion_mode='mgrsDefault', num_of_digits=None, rounding=True, add_spaces=True, gis=None, future=False)¶

The to_geo_coordinate_string function is performed on a Geometry service resource. The function converts an array of xy-coordinates into well-known strings based on the conversion type and SpatialReference supplied by the User. Optional parameters are available for some conversion types. See from_geo_coordinate_strings for more information on the opposite conversion.

Note

If an optional parameter is not applicable for a particular conversion type, but a value is supplied for that parameter, the value will be ignored.

Keys	Description
spatial_ref	A `SpatialReference` object or the well-known ID of the spatial reference of the input coordinates.
coordinates	An list of xy-coordinates in JSON format to be converted. Syntax: [[10,10],[10,20]…[30,40]]
conversion-type	The conversion type of the input strings. Note Valid conversion types are: MGRS - Military Grid Reference System USNG - United States National Grid UTM - Universal Transverse Mercator GeoRef - World Geographic Reference System GARS - Global Area Reference System DMS - Degree Minute Second DDM - Degree Decimal Minute DD - Decimal Degree
conversion_mode	Conversion options for MGRS and UTM conversion types. Note Valid conversion modes for MGRS are: mgrsDefault - Default. Uses the spheroid from the given spatial reference mgrsNewStyle - Treats all spheroids as new, like WGS 1984. The 80 degree longitude falls into Zone 60 mgrsOldStyle - Treats all spheroids as old, like Bessel 1841. The 180 degree longitude falls into Zone 60 mgrsNewWith180InZone01 - Same as mgrsNewStyle except the 180 degree longitude falls into Zone 01 mgrsOldWith180InZone01 - Same as mgrsOldStyle except the 180 degree longitude falls into Zone 01 Note Valid conversion modes for UTM are: utmDefault - Default. No options. utmNorthSouth - Uses north/south latitude indicators instead of zone numbers - Non-standard. Default is recommended
num_of_digits	The number of digits to output for each of the numerical portions in the string. The default value for `num_of_digits` varies depending on `conversion_type`: MGRS: 5 USNG: 8 UTM: NA GeoRef: 5 GARS: NA DMS: 2 DDM: 4 DD: 6
rounding	If True, then numeric portions of the string are rounded to the nearest whole magnitude as specified by num_of_digits Otherwise, numeric portions of the string are truncated. Note The rounding parameter applies only to conversion types MGRS, USNG and GeoRef. The default value is True.
add_spaces	Option boolean. If True, then spaces are added between components of the string. Note Only applies to conversion_types MGRS, USNG and UTM. The default value for MGRS is False, while the default value for both USNG and UTM is True.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user.

Returns: A list of strings if future = False, a GeometryJob object if future = True.

>>> strings = to_geo_coordinate_string(spatial_ref = 4326,
                                       coordinates = [[180,0],[-117,34],[0,52]],
                                       conversion_type = "MGRS",
                                       conversion_mode = "mgrsNewWith180InZone01",
                                       num_of_digits=8,
                                       add_spaces=True,
                                       future = False)
>>> strings
    ["01N AA 66021 00000","11S NT 00000 62155", "31U BT 94071 65288"]

trim_extend¶

arcgis.geometry.functions.trim_extend(spatial_ref, polylines, trim_extend_to, extend_how=0, gis=None, future=False)¶

The trim_extend function trims or extends each Polyline specified in the input list using the user-specified guide polylines.

Note

When trimming features, the part to the left of the oriented cutting line is preserved in the output, and the other part is discarded. An empty Polyline is added to the output list if the corresponding input polyline is neither cut nor extended.

Keys	Description
polylines	A list of `Polyline` objects to trim or extend
trim_extend_to	A `Polyline` serving as the guide for trimming or extending input polylines.
extend_how	A flag that is used along with the trimExtend function. `0` - By default, an extension considers both ends of a path. The old ends remain, and new points are added to the extended ends. The new points have attributes that are extrapolated from adjacent existing segments. `1` - If an extension is performed at an end, relocate the end point to the new position instead of leaving the old point and adding a new point at the new position. `2` - If an extension is performed at an end, do not extrapolate the end-segment’s attributes for the new point. Instead, make its attributes the same as the current end. Incompatible with esriNoAttributes. * `4` - If an extension is performed at an end, do not extrapolate the end-segment’s attributes for the new point. Instead, make its attributes empty. Incompatible with esriKeepAttributes. `8` - Do not extend the ‘from’ end of any path. `16` - Do not extend the ‘to’ end of any path.
spatial_ref	A `SpatialReference` object or the well-known ID of the spatial reference of the input geometries.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user.

Returns: A list of Polyline objects if future = False, or a GeometryJob object if future = True.

union¶

arcgis.geometry.functions.union(geometries, spatial_ref=None, gis=None, future=False)¶

The union function constructs the set-theoretic union of each Geometry in the geometries list.

Note

All inputs must be of the same type.

Keys	Description
geometries	Required list of `Point`, `MultiPoint`, `Polyline`, or `Polygon` objects.
spatial_ref	A `SpatialReference` object or the well-known ID of the spatial reference of the input geometries.
future	Optional boolean. If True, a `GeometryJob` object will be returned and the process returns control to the user. If False, the process waits for the operation to complete before returning results and passing control back to the user. Note If future=True, there is a limitation of 6500 geometries that can be processed in one call.

Returns: If future = False, the set-theoretic union of the Geometry objects in the geometries argument, or if future = True, a GeometryJob object.

ArcGIS API for PythonAPI Reference

arcgis.geometry.functions module

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