Region Quadtrees for Spatial Data
Get all Quadtree cell values as a vector
Add a gradient legend to a plot
Convert to other R spatial objects
Convert a Quadtree to a data frame
Create a raster from a Quadtree
Create a deep copy of a Quadtree
CppLcpFinder: C++ LCP finder
CppNode: C++ quadtree node
CppQuadtree: C++ quadtree data structure
Get the extent of a Quadtree
Extract Quadtree values
Find the LCP between two points on a Quadtree
Find LCPs to surrounding points
Get the neighbors of a Quadtree cell
Create a LcpFinder
LcpFinder Class
Get the number of cells in a Quadtree
Plot a LcpFinder object
Plot a Quadtree
Retrieve the projection of a Quadtree
Quadtree class
Quadtree Representation of Rasters
Create a Quadtree from a raster or matrix
Read/write a Quadtree
Change values of Quadtree cells
Get a matrix summarizing all LCPs found by a LcpFinder
Show a summary of a LcpFinder
Show a summary of a Quadtree
Transform the values of all Quadtree cells
Read/write a Quadtree
Provides functionality for working with raster-like quadtrees (also called “region quadtrees”), which allow for variable-sized cells. The package allows for flexibility in the quadtree creation process. Several functions defining how to split and aggregate cells are provided, and custom functions can be written for both of these processes. In addition, quadtrees can be created using other quadtrees as “templates”, so that the new quadtree's structure is identical to the template quadtree. The package also includes functionality for modifying quadtrees, querying values, saving quadtrees to a file, and calculating least-cost paths using the quadtree as a resistance surface.
Useful links