Spatial Graph-Theoretic Genetic Gravity Modelling
Binary adjacency matrix
Statistics for edges (lines) based on a defined scale (area).
Build node data
Compare gravity models
Subset of raster data for Columbia spotted frog (Rana luteiventris)
Distance matrix to data.frame
Convert distance to flow
Graph Metrics
Statistics for edges (lines)
Effect Size
Gravity model
Saturated or K Nearest Neighbor Graph
raster statistics for nodes
Plot gravity model
Predict gravity model
Print gravity model
Summarizing Gravity Model Fits
Implementation of spatial graph-theoretic genetic gravity models. The model framework is applicable for other types of spatial flow questions. Includes functions for constructing spatial graphs, sampling and summarizing associated raster variables and building unconstrained and singly constrained gravity models.