autoarray.inversion.pixelization.mesh.VoronoiNN#

class VoronoiNN[source]#

An irregular mesh of Voronoi pixels, which using no interpolation are paired with a 2D grid of (y,x) coordinates.

For a full description of how a mesh is paired with another grid, see the Pixelization API documentation.

The Voronoi mesh represents pixels as an irregular 2D grid of Voronoi cells.

A Pixelization using a Voronoi mesh has four grids associated with it:

image_plane_data_grid: The observed data grid in the image-plane (which is paired with the mesh in the source-plane).
image_plane_mesh_grid: The (y,x) mesh coordinates in the image-plane (which are the centres of Voronoi cells in the source-plane).
source_plane_data_grid: The observed data grid mapped to the source-plane (e.g. after gravitational lensing).
source_plane_mesh_grid: The centre of each Voronoi cell in the source-plane (the image_plane_mesh_grid maps to this after gravitational lensing).

Each (y,x) coordinate in the source_plane_data_grid is paired with all Voronoi cells it falls within, without using an interpolation scheme.

Methods

`mapper_grids_from`	Mapper objects describe the mappings between pixels in the masked 2D data and the pixels in a mesh,
`mesh_grid_from`	Return the Voronoi source_plane_mesh_grid as a Mesh2DVoronoi object, which provides additional functionality for performing operations that exploit the geometry of a Voronoi mesh.
`relocated_grid_from`	Relocates all coordinates of the input source_plane_data_grid that are outside of a
`relocated_mesh_grid_from`	Relocates all coordinates of the input source_plane_mesh_grid that are outside of a border (which

Attributes

`requires_image_mesh`
`uses_interpolation`