stopp: An R Package for Spatio-Temporal Point Pattern Analysis

TL;DR

stopp is an R package that offers a comprehensive framework for modeling, diagnosing, and analyzing complex spatio-temporal point patterns, including those on linear networks like city roads.

Contribution

it is the first R package providing a unified framework for spatio-temporal point process modeling, diagnostics, and simulation, especially on networks.

Findings

enables modeling of point patterns in Euclidean space and on networks

provides tools for goodness-of-fit and exploratory analysis

aggregates existing and new methods for spatio-temporal analysis

Abstract

stopp is a novel R package specifically designed for the analysis of spatio-temporal point patterns which might have occurred in a subset of the Euclidean space or on some specific linear network, such as roads of a city. It represents the first package providing a comprehensive modelling framework for spatio-temporal Poisson point processes. While many specialized models exist in the scientific literature for analyzing complex spatio-temporal point patterns, we address the lack of general software for comparing simpler alternative models and their goodness of fit. The package's main functionalities include modelling and diagnostics, together with exploratory analysis tools and the simulation of point processes. A particular focus is given to local first-order and second-order characteristics. The package aggregates existing methods within one coherent framework, including those we proposed in recent papers, and it aims to welcome many further proposals and extensions from the R community.