Projections

APIs to project coordinates between coordinate reference systems. More...

Files
file	projection.hpp
file	projection.cuh

Functions
std::pair< std::unique_ptr< cudf::column >, std::unique_ptr< cudf::column > >	cuspatial::sinusoidal_projection (double origin_lon, double origin_lat, cudf::column_view const &input_lon, cudf::column_view const &input_lat, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Sinusoidal projection of longitude/latitude relative to origin to Cartesian (x/y) coordinates in km.

Detailed Description

APIs to project coordinates between coordinate reference systems.

This module contains APIs that transforms cartesian and geodesic coordinates.

Function Documentation

sinusoidal_projection()

std::pair< std::unique_ptr< cudf::column >, std::unique_ptr< cudf::column > > cuspatial::sinusoidal_projection	(	double	origin_lon,
		double	origin_lat,
		cudf::column_view const &	input_lon,
		cudf::column_view const &	input_lat,
		rmm::mr::device_memory_resource *	mr = rmm::mr::get_current_device_resource()
	)

Sinusoidal projection of longitude/latitude relative to origin to Cartesian (x/y) coordinates in km.

Can be used to approximately convert longitude/latitude coordinates to Cartesian coordinates given that all points are near the origin. Error increases with distance from the origin. See Sinusoidal Projection for more detail.

Parameters

origin_lon	longitude of origin
origin_lat	latitude of origin
input_lon	longitudes to transform
input_lat	latitudes to transform
mr	The optional resource to use for output device memory allocations.

Returns

a pair of columns containing cartesian coordinates in kilometers