Inverse-Distance

IDW

Bases: Entity

Inverse Distance Weighting Solver class.

Parameters:

Name	Type	Description	Default
metric		Metric used for distance computation.	required
power	int	Power used for distance computation. Defaults to 1.	1
neighborhood_model	Neighborhood	Neighborhood model used for weights computation.	required
axes	List[Coord]	If solver is 2D or 3D. Defaults to [Coord.U, Coord.V, Coord.W].	[U, V, W]

Attributes:

Name	Type	Description
metric		Metric used for distance computation.
power	int	Power used for distance computation. Default is L1 norm.
neighborhood_model	Neighborhood	Neighborhood model used for weights computation.
axes	List[Coord]	If solver is 2D or 3D.

axes property

Return Solver Axis.

Returns:

Type	Description
List[Coord]	List of axes.

neighborhood_model property

Return Neighborhood Model.

Returns:

Type	Description
Neighborhood	Neighborhood model.

power property

Return Solver Power.

Returns:

Type	Description
int	Solver Power.

solve(obj, obj_region, obj_attribute, support, support_region, support_attribute)

Solve IDW on a support using a conditioning object.

Parameters:

Name	Type	Description	Default
obj	GeoRefObject	Conditioning Object.	required
obj_region	Optional[str]	Spatial subset of conditioning.	required
obj_attribute	str	Property to estimate.	required
support	GeoRefObject	Object to estimate onto.	required
support_region	Optional[str]	Spatial subset of estimation.	required
support_attribute	str	Property name to add in support.	required

Raises: - At least, metric or neighborhood_model must be assigned.

solve_api(neighborhood_model, dim, obj_coords, obj_data, support_coords, power=1) staticmethod

Low-level IDW solving method.

Parameters:

Name	Type	Description	Default
neighborhood_model	Neighborhood	Neighborhood model used for weights computation.	required
dim	int	Number of dimensions.	required
obj_coords	ndarray	Conditioning object coordinates in region along specified axes.	required
obj_data	ndarray	Values in selected region.	required
support_coords	ndarray	Support coordinates in region along specified axes.	required
power	int	Power used for distance computation. Defaults to 1.	1

Returns:

Type	Description
Tuple[ndarray, ndarray]	IDW results and distance ndarrays.