Core API#
The root import for geoarrow. This import is intended for those working
with geoarrow at a low level; most users should use the pyarrow integration
as import geoarrow.pyarrow as ga.
Examples#
>>> import geoarrow.c as ga
Constants#
- class GeometryType#
Constants for geometry type. These values are the same as those used in well-known binary (i.e, 0-7).
Examples#
>>> import geoarrow.c as ga >>> ga.GeometryType.MULTIPOINT <GeoArrowGeometryType.GEOARROW_GEOMETRY_TYPE_MULTIPOINT: 4>
- BOX = 990#
Box geometry type
- GEOMETRY = 0#
Unknown or uninitialized geometry type
- GEOMETRYCOLLECTION = 7#
Geometrycollection geometry type
- LINESTRING = 2#
Linestring geometry type
- MULTILINESTRING = 5#
Multilinestring geometry type
- MULTIPOINT = 4#
Multipoint geometry type
- MULTIPOLYGON = 6#
Multipolygon geometry type
- POINT = 1#
Point geometry type
- POLYGON = 3#
Polygon geometry type
- class Dimensions#
Constants for dimensions.
Examples#
>>> import geoarrow.c as ga >>> ga.Dimensions.XYZM <GeoArrowDimensions.GEOARROW_DIMENSIONS_XYZM: 4>
- UNKNOWN = 0#
Unknown or ininitialized dimensions
- XY = 1#
XY dimensions
- XYM = 3#
XYM dimensions
- XYZ = 2#
XYZ dimensions
- XYZM = 4#
XYZM dimensions
- class CoordType#
Constants for coordinate type.
Examples#
>>> import geoarrow.c as ga >>> ga.CoordType.INTERLEAVED <GeoArrowCoordType.GEOARROW_COORD_TYPE_INTERLEAVED: 2>
- INTERLEAVED = 2#
Coordinate type compose of a single array containing all dimensions (i.e., a fixed-size list)
- SEPARATE = 1#
Coordinate type composed of separate arrays for each dimension (i.e., a struct)
- UNKNOWN = 0#
Unknown or uninitialized coordinate type
- class EdgeType#
Constants for edge type.
Examples#
>>> import geoarrow.c as ga >>> ga.EdgeType.SPHERICAL <GeoArrowEdgeType.GEOARROW_EDGE_TYPE_SPHERICAL: 1>
- ANDOYER = 4#
Edges are geodesic on a spheroid according to the Andoyer algorithm
- KARNEY = 5#
Edges are geodesic on a spheroid according to the Karney algorithm
- PLANAR = 0#
Edges form a Cartesian line on a plane
- SPHERICAL = 1#
Edges are geodesic on a sphere
- THOMAS = 3#
Edges are geodesic on a spheroid according to the Thomas algorithm
- VINCENTY = 2#
Edges are geodesic on a spheroid according to the Vincenty algorithm
- class CrsType#
Constants for coordinate reference system type.
Examples#
>>> import geoarrow.c as ga >>> ga.CrsType.PROJJSON <GeoArrowCrsType.GEOARROW_CRS_TYPE_PROJJSON: 2>
- AUTHORITY_CODE = 4#
The CRS value is a authority:code-encoded string
- NONE = 0#
Explicit empty coordinate reference system
- PROJJSON = 2#
The CRS value is a PROJJSON-encoded string
- SRID = 5#
The CRS value is an opaque producer-defined identifier
- UNKNOWN = 1#
The CRS value is a string of unspecified origin
- WKT2_2019 = 3#
The CRS value is a WKT:2019-encoded string