libcuspatial
23.12.00
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#include <cuspatial/column/geometry_column_view.hpp>
#include <cuspatial/constants.hpp>
#include <cudf/column/column.hpp>
#include <cudf/column/column_view.hpp>
#include <cudf/table/table_view.hpp>
#include <cudf/utilities/span.hpp>
#include <rmm/mr/device/per_device_resource.hpp>
#include <optional>
Go to the source code of this file.
Functions | |
std::unique_ptr< cudf::column > | cuspatial::haversine_distance (cudf::column_view const &a_lon, cudf::column_view const &a_lat, cudf::column_view const &b_lon, cudf::column_view const &b_lat, double const radius=EARTH_RADIUS_KM, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource()) |
Compute haversine distances between points in set A and the corresponding points in set B. | |
std::pair< std::unique_ptr< cudf::column >, cudf::table_view > | cuspatial::directed_hausdorff_distance (cudf::column_view const &xs, cudf::column_view const &ys, cudf::column_view const &space_offsets, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource()) |
computes Hausdorff distances for all pairs in a collection of spaces | |
std::unique_ptr< cudf::column > | cuspatial::pairwise_point_distance (geometry_column_view const &multipoints1, geometry_column_view const &multipoints2, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource()) |
Compute pairwise (multi)point-to-(multi)point Cartesian distance. | |
std::unique_ptr< cudf::column > | cuspatial::pairwise_point_linestring_distance (geometry_column_view const &multipoints, geometry_column_view const &multilinestrings, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource()) |
Compute pairwise (multi)points-to-(multi)linestrings Cartesian distance. | |
std::unique_ptr< cudf::column > | cuspatial::pairwise_point_polygon_distance (geometry_column_view const &multipoints, geometry_column_view const &multipolygons, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource()) |
Compute pairwise (multi)point-to-(multi)polygon Cartesian distance. | |
std::unique_ptr< cudf::column > | cuspatial::pairwise_linestring_distance (geometry_column_view const &multilinestrings1, geometry_column_view const &multilinestrings2, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource()) |
Compute pairwise (multi)linestring-to-(multi)linestring Cartesian distance. | |
std::unique_ptr< cudf::column > | cuspatial::pairwise_linestring_polygon_distance (geometry_column_view const &multilinestrings, geometry_column_view const &multipolygons, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource()) |
Compute pairwise (multi)linestring-to-(multi)polygon Cartesian distance. | |
std::unique_ptr< cudf::column > | cuspatial::pairwise_polygon_distance (geometry_column_view const &multipolygons1, geometry_column_view const &multipolygons2, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource()) |
Compute pairwise (multi)polygon-to-(multi)polygon Cartesian distance. | |
std::pair< std::unique_ptr< cudf::column >, cudf::table_view > cuspatial::directed_hausdorff_distance | ( | cudf::column_view const & | xs, |
cudf::column_view const & | ys, | ||
cudf::column_view const & | space_offsets, | ||
rmm::mr::device_memory_resource * | mr = rmm::mr::get_current_device_resource() |
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computes Hausdorff distances for all pairs in a collection of spaces
https://en.wikipedia.org/wiki/Hausdorff_distance
Example in 1D (this function operates in 2D):
[in] | xs | x component of points |
[in] | ys | y component of points |
[in] | space_offsets | beginning index of each space, plus the last space's end offset. |
cudf::cuda_error | if xs and ys lengths differ |
cudf::cuda_error | if xs and ys types differ |
cudf::cuda_error | if space_offsets size is less than xs and xy |
cudf::cuda_error | if xs , ys , or space_offsets has nulls |
std::unique_ptr< cudf::column > cuspatial::haversine_distance | ( | cudf::column_view const & | a_lon, |
cudf::column_view const & | a_lat, | ||
cudf::column_view const & | b_lon, | ||
cudf::column_view const & | b_lat, | ||
double const | radius = EARTH_RADIUS_KM , |
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rmm::mr::device_memory_resource * | mr = rmm::mr::get_current_device_resource() |
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) |
Compute haversine distances between points in set A and the corresponding points in set B.
https://en.wikipedia.org/wiki/Haversine_formula
[in] | a_lon | longitude of points in set A |
[in] | a_lat | latitude of points in set A |
[in] | b_lon | longitude of points in set B |
[in] | b_lat | latitude of points in set B |
[in] | radius | radius of the sphere on which the points reside. default: 6371.0 (aprx. radius of earth in km) |
std::unique_ptr< cudf::column > cuspatial::pairwise_linestring_distance | ( | geometry_column_view const & | multilinestrings1, |
geometry_column_view const & | multilinestrings2, | ||
rmm::mr::device_memory_resource * | mr = rmm::mr::get_current_device_resource() |
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) |
Compute pairwise (multi)linestring-to-(multi)linestring Cartesian distance.
The distance between a pair of multilinestrings is the shortest Cartesian distance between any pair of segments in the two multilinestrings. If any of the segments intersects, the distance is 0.
multilinestrings1 | First column of multilinestrings to compute distances |
multilinestrings2 | Second column of multilinestrings to compute distances |
mr | Device memory resource used to allocate the returned column's device memory |
cuspatial::logic_error | if multilinestrings1 and multilinestrings2 sizes differ |
cuspatial::logic_error | if either multilinestrings1 or multilinestrings2 is not a linestring column. |
cuspatial::logic_error | if multilinestrings1 and multilinestrings2 coordinate types |
std::unique_ptr< cudf::column > cuspatial::pairwise_linestring_polygon_distance | ( | geometry_column_view const & | multilinestrings, |
geometry_column_view const & | multipolygons, | ||
rmm::mr::device_memory_resource * | mr = rmm::mr::get_current_device_resource() |
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) |
Compute pairwise (multi)linestring-to-(multi)polygon Cartesian distance.
The distance between a pair of (multi)linestring and (multipolygon) is the shortest Cartesian distance between any pair of segments in the multilinestring and edges in the multipolygon. If any of the segments intersects, or if any linestring is contained in any polygon, the distance is 0.
multilinestrings | Geometry column of multilinestrings |
multipolygons | Geometry column of multipolygons |
mr | Device memory resource used to allocate the returned column. |
cuspatial::logic_error | if multilinestrings and multipolygons sizes differ |
cuspatial::logic_error | if either multilinestrings is not a linestrings column or multipolygons is not a polygon column. |
cuspatial::logic_error | if multilinestrings and multipolygons has different coordinate types. |
std::unique_ptr< cudf::column > cuspatial::pairwise_point_distance | ( | geometry_column_view const & | multipoints1, |
geometry_column_view const & | multipoints2, | ||
rmm::mr::device_memory_resource * | mr = rmm::mr::get_current_device_resource() |
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) |
Compute pairwise (multi)point-to-(multi)point Cartesian distance.
The distance between a pair of multipoints is the shortest Cartesian distance between any pair of points in the two multipoints.
points1 | First column of (multi)points to compute distances |
points2 | Second column of (multi)points to compute distances |
cuspatial::logic_error | if multipoints1 and multipoints2 sizes differ |
cuspatial::logic_error | if either multipoints1 or multipoints2 is not a multipoint column |
cuspatial::logic_error | if multipoints1 and multipoints2 coordinate types differ |
std::unique_ptr< cudf::column > cuspatial::pairwise_point_linestring_distance | ( | geometry_column_view const & | multipoints, |
geometry_column_view const & | multilinestrings, | ||
rmm::mr::device_memory_resource * | mr = rmm::mr::get_current_device_resource() |
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) |
Compute pairwise (multi)points-to-(multi)linestrings Cartesian distance.
The distance between a point and a linestring is defined as the minimum Cartesian distance between the point and any segment of the linestring.
multipoints | Column of multipoints to compute distances |
multilinestrings | Column of multilinestrings to compute distances |
mr | Device memory resource used to allocate the returned column. |
cuspatial::logic_error | if multipoints and multilinestrings sizes differ |
cuspatial::logic_error | if multipoints is not a multipoints column or multilinestrings is not a multilinestrings column |
cuspatial::logic_error | if multipoints and multilinestrings coordinate types differ |
std::unique_ptr< cudf::column > cuspatial::pairwise_point_polygon_distance | ( | geometry_column_view const & | multipoints, |
geometry_column_view const & | multipolygons, | ||
rmm::mr::device_memory_resource * | mr = rmm::mr::get_current_device_resource() |
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) |
Compute pairwise (multi)point-to-(multi)polygon Cartesian distance.
The distance between a point and a polygon is defined as the minimum Cartesian distance between the point and any segment of the polygon. If the any point of the multipoint is contained in the polygon, the distance is 0.
multipoints | Geometry column of multipoints |
multipolygons | Geometry column of multipolygons |
mr | Device memory resource used to allocate the returned column. |
cuspatial::logic_error | if multipoints and multipolygons sizes differ |
cuspatial::logic_error | if multipoints is not a point column and multipolygons is not a polygon column. |
cuspatial::logic_error | if multipoints and multipolygons coordinate types differ |
std::unique_ptr< cudf::column > cuspatial::pairwise_polygon_distance | ( | geometry_column_view const & | multipolygons1, |
geometry_column_view const & | multipolygons2, | ||
rmm::mr::device_memory_resource * | mr = rmm::mr::get_current_device_resource() |
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) |
Compute pairwise (multi)polygon-to-(multi)polygon Cartesian distance.
The distance between a pair of (multi)polygon and (multi)polygon is the shortest Cartesian distance between any pair of edges in the multipolygons. If any edges intersects, or if any polygon is contained in any other polygon, the distance is 0.
multipolygons1 | Geometry column of the multipolygons to compute distance from |
multipolygons2 | Geometry column of the multipolygons to compute distance to |
mr | Device memory resource used to allocate the returned column. |