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spatstat (version 1.14-3)

Spatial Point Pattern analysis, model-fitting, simulation, tests

Description

A package for analysing spatial data, mainly Spatial Point Patterns, including multitype/marked points and spatial covariates, in any two-dimensional spatial region. Contains functions for plotting spatial data, exploratory data analysis, model-fitting, simulation, spatial sampling, model diagnostics, and formal inference. Data types include point patterns, line segment patterns, spatial windows, and pixel images. Point process models can be fitted to point pattern data. Cluster type models are fitted by the method of minimum contrast. Very general Gibbs point process models can be fitted to point pattern data using a function ppm similar to lm or glm. Models may include dependence on covariates, interpoint interaction and dependence on marks. Fitted models can be simulated automatically. Also provides facilities for formal inference (such as chi-squared tests) and model diagnostics (including simulation envelopes, residuals, residual plots and Q-Q plots).

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Version

Install

install.packages('spatstat')

Monthly Downloads

16,590

Version

1.14-3

License

GPL (>= 2)

Maintainer

Adrian Baddeley

Last Published

March 22nd, 2025

Functions in spatstat (1.14-3)

Murchison gold deposits

Lurking variable plot

Interactively Add Points

Pair Correlation Function of Point Pattern

Contour plot of pixel image

Nearest-Neighbour Correlation of Marked Point Pattern

Test Whether Marks Are Present

Convert to Pixel Image

Inhomogeneous Cross K Function

Orientation Angles of Line Segments

Coefficients of Fitted Point Process Model

The Multitype Strauss Point Process Model

Histogram of Pixel Values in an Image

Compute Images of Constructed Covariates

Pixel Image Approximation of a Window

Method of Minimum Contrast

Simulate Matern Cluster Process

The Strauss Point Process Model

Pairwise distances between line segments

Nearest Neighbour Distance Function G

Window in Shape of Letter R

Hybrid Geyer Point Process Model

Marked Nearest Neighbour Distance Function

Generate Poisson Random Line Process

Centroid of a window

Piecewise Constant Saturated Pairwise Interaction Point Process Model

Distance for a Point Pattern Matching

Set or Reset the Marks in a Point Pattern

Midpoints of Line Segment Pattern

The Area Interaction Point Process Model

Determine Duplicated Points in a Spatial Point Pattern

Nearest neighbour distances between line segments

Lansing Woods Point Pattern

Delaunay Triangulation of Point Pattern

Test Whether Two Pixel Images Are Compatible

Kaplan-Meier Estimator using Histogram Data

Test Whether A Point Process Model is Marked

Rotate a Point Pattern

Summarise Marks in Every Neighbourhood in a Point Pattern

Pair Correlation Function obtained from K Function

compatible.fasp

Test Whether Two Function Arrays Are Compatible

Generic Pairwise Interaction model

Kolmogorov-Smirnov Test for Point Process Model

Multitype K Function (Cross-type)

Plot a List of Things

model.matrix.ppm

Extract Design Matrix from Point Process Model

Reduced Second Moment Measure

Extract Subset of Line Segment Pattern

Generate a Default Pattern of Dummy Points

Longleaf Pines Point Pattern

Extract the Interaction from a Fitted Point Process Model

Harkness-Isham ants' nests data

Pairwise distances

Data Frames of Function Values

Concatenate x,y Coordinate Vectors

Test Whether Two Function Objects Are Compatible

Generic Ord Interaction model

is.multitype.ppp

Test Whether A Point Pattern is Multitype

rescue.rectangle

Convert Window Back To Rectangle

Distance to Boundary of Window

Estimate the J-function

Beta Ganglion Cells in Cat Retina

Convert Pixel Image from Numeric to Factor

spatstat-deprecated

Deprecated spatstat functions

Ord's Interaction model

Pairwise distances between two different point patterns

Calculate four standard summary functions of a point pattern.

Multitype J Function (i-to-j)

plot a Fitted Point Process Model

Safely Convert Point Pattern Window to Binary Mask

Crossing Points of Two Line Segment Patterns

The Piecewise Constant Pairwise Interaction Point Process Model

Interactively Define a Polygon

Identify Points in a Point Pattern

Kernel Smoothing of Line Segment Pattern

Test Whether An Object Is A Pixel Image

New Zealand Trees Point Pattern

Lengths of Line Segments

Poisson Point Process Model

Area of a Window

Inhomogeneous K-function

Multitype L-function (i-to-any)

Areas of Morphological Erosions

Exponential Energy Marks

Rectangular grid of points

Pairwise distances

Hutchings' Bramble Canes data

Class of Quadrature Schemes

Simulate a fitted cluster point process model.

multiplicity.ppp

Count Multiplicity of Duplicate Points

The Lennard-Jones Potential

Saturated Pairwise Interaction model

Plot a Spatial Window

Weighted Empirical Cumulative Distribution Function

Point Patterns of New Brunswick Forest Fires

Endpoints of Line Segment Pattern

Kernel Smoothed Intensity of Point Pattern

Plot Function Valuesn

Pairwise distances

plot a Spatial Quadrature Scheme

subset.splitppp

Extract or Replace Sub-Patterns

Multitype L-function (cross-type)

Test Whether Points Are Inside A Window

Extract Quadrature Scheme Used to Fit a Point Process Model

Simulate Thomas Process

Multitype K Function (i-to-any)

Extract Dummy Points Used to Fit a Point Process Model

Multitype J Function (i-to-any)

Apply a Function to a Point Pattern Broken Down by Factor

Divide Region into Quadrats

Berman-Huntington points and lines data

Interpolate a Pixel Image

Profile Maximum Pseudolikelihood

Rotate a Line Segment Pattern

Residuals for Fitted Point Process Model

Summary of a Point Pattern Dataset

Summarizing a Pixel Image

Pair Correlation Function obtained from array of K functions

pairdist.default

Pairwise distances

Plot a plotppm Object Created by plot.ppm

Compute Quadrature Weights Based on Grid Counts

Plot a fitted cluster point process

Prediction from a Fitted Point Process Model

Japanese Pines Point Pattern

Plot a Pixel Image

Distance Map of Window

Multitype pair correlation function

as.data.frame.ppp

Coerce Point Pattern to a Data Frame

Summarizing a Quadrature Scheme

Nearest neighbour

Convert Window to Another Unit of Length

pppmatching.object

Class of Point Matchings

Marked K-Function

Convert Data To Class owin

Aherne's hamster tumour data

Mark Correlation Function

spatstat.options

Internal Options in Spatstat Package

is.multitype.ppm

Test Whether A Point Process Model is Multitype

Intersection or Union of Two Windows

Apply Affine Transformation

Simulate Baddeley-Silverman Cell Process

Quadrat counting for a point pattern

Chi-Squared Dispersion Test for Spatial Point Pattern Based on Quadrat Counts

Generate N Random Multitype Points

quadratresample

Resample a Point Pattern by Resampling Quadrats

Simulation envelopes of summary function

Level Set of a Pixel Image

Simulate Simple Sequential Inhibition

Quadrature Scheme Based on Pixel Grid

Data and Code From JRSS Discussion Paper on Residuals

dirichlet.weights

Compute Quadrature Weights Based on Dirichlet Tessellation

Corners of a rectangle

Random Perturbation of a Point Pattern

Simulate systematic random point pattern

plot a Spatial Line Segment Pattern

Summarizing a Fitted Point Process Model

Class of Fitted Point Process Models

Tropical rain forest trees

density.splitppp

Kernel Smoothed Intensity of Split Point Pattern

Create a Point Matching

California Redwoods Point Pattern (Entire Dataset)

Cartesian Coordinates for a Pixel Raster

Test Whether An Object Is A Fitted Point Process Model

Generate N Uniform Random Points

Ponderosa Pine Tree Point Pattern

Prediction from a Fitted Cluster Point Process Model

Class of Line Segment Patterns

Bounding Box of a Window or Point Pattern

Combine Two Line Segment Patterns

nearest.raster.point

Find Pixel Nearest to a Given Point

Diameter of a Window

MultiStraussHard

The Multitype/Hard Core Strauss Point Process Model

Spruces Point Pattern

Extract or Replace Subset of a List of Things

Interaction Distance of a Point Process

Apply Function to Every Neighbourhood in a Point Pattern

Print Brief Details of a Line Segment Pattern Dataset

Create a Tessellation

Estimate window from points alone

Nearest Neighbour in Another Point Pattern

Calculate Summary Statistic for All Types in a Multitype Point Pattern

Convex Hull of Points

Tabulate Marks in Neighbourhood of Every Point in a Point Pattern

Expand Window By Factor

Print Progress Reports

Fit a Log-Gaussian Cox Point Process by Minimum Contrast

Summary of a Spatial Window

Extract or Replace Subset of Tessellation

Simulate Neyman-Scott Process

Ord Interaction Process Family

Artificial Data Point Pattern

Plot a tessellation

Apply Vector Translation To Pixel Image

Fit cluster point process model

Kaplan-Meier and Reduced Sample Estimator using Histograms

Fit Point Process Model to Data

Define Point Process Model for Metropolis-Hastings Simulation.

Print a Quadrature Scheme

Simulate Matern Model II

Hughes' Amacrine Cell Data

Reduced Sample Estimator using Histogram Data

K-function using FFT

Cut margins from rectangle

Hyper Data Frame

Perfect Simulation of the Strauss Process

Extract List of Tiles in a Tessellation

Apply Vector Translation To Window

ANOVA for Fitted Point Process Models

Create a Window

Rotate a Window

Geyer's Saturation Point Process Model

Print Brief Details of an Image

Sufficient Statistic of Point Process Model

Log Likelihood for Poisson Point Process Model

Classify Points in a Point Pattern

Evaluate an Expression in a Function Table

Q-Q Plot of Residuals from Fitted Point Process Model

Update a Fitted Point Process Model

Plot a Function Array

Generate Poisson Point Pattern

Extract Unique Points from a Spatial Point Pattern

Perspective Plot of Pixel Image

Generate N Random Points

Convert Pixel Image to Matrix

Distance Map of Point Pattern

Print Brief Details of a Point Pattern Dataset

Basis for Harmonic Functions

Read Point Pattern From Data File

Distance Between Two Point Patterns

Function Arrays for Spatial Patterns

Class of Images

The Spatstat Package

Estimate the I-function

Name for Unit of Length

Remove Marks from a Marked Point Pattern

inforder.family

Infinite Order Interaction Family

Generate Multitype Poisson Point Pattern

Circular Window

California Redwoods Point Pattern (Ripley's Subset)

Convert dataset to another unit of length

Fitted Conditional Intensity for Point Process Model

Update a Fitted Cluster Point Process Model

Convert Point Pattern to Another Unit of Length

Extract Subset of Function Array

Beadlet Anemones Data

rmhmodel.default

Build Point Process Model for Metropolis-Hastings Simulation.

Create a Point Pattern

Evaluate Expression Involving Functions

Random Re-Labelling of Point Pattern

Test Whether An Object Is A Point Pattern

Beta Ganglion Cells in Cat Retina, Old Version

Superimpose Several Point Patterns

Generate a Quadrature Scheme from a Point Pattern

Spokes pattern of dummy points

Inhomogeneous Multitype K Dot Function

Compute Integral of Function Against Cumulative Distribution

Generate N Uniform Random Points in a Disc

Convert Data To Class ppp

crossdist.default

Pairwise distances between two different sets of points

Randomly Shift a Line Segment Pattern

Set Covariance of a Window

Pairwise distances between two different line segment patterns

Diggle-Gratton model

Spatial smoothing of observations at irregular points

Evaluate Expression Involving Pixel Images

Diagnostic Plots for Fitted Point Process Model

Randomly Shift a Point Pattern

Simulate from a Fitted Point Process Model

Variance-Covariance Matrix for a Fitted Point Process Model

Clark and Evans Aggregation Index

Multitype Nearest Neighbour Distance Function (i-to-j)

Subset of Quadrature Scheme

Reset Values in Subset of Image

Simulate Stratified Random Point Pattern

Simulated Point Pattern

Test whether Object is Multitype

Humberside Data on Childhood Leukaemia and Lymphoma

Apply Gaussian Blur to a Pixel Image

Divide Point Pattern into Sub-patterns

Difference of Disc Areas

Apply Affine Transformation To Line Segment Pattern

Convert Data To Class psp

Summary of a List of Things

Chorley-Ribble Cancer Data

Test Whether A Point Pattern is Marked

Compute Fitted Effect of a Spatial Covariate in a Point Process Model

Union of Data and Dummy Points

Dirichlet Tessellation of Point Pattern

Urkiola Woods Point Pattern

Convert Line Segment Pattern to Another Unit of Length

Apply Affine Transformation To Point Pattern

The Strauss / Hard Core Point Process Model

Random Thinning

pairwise.family

Pairwise Interaction Process Family

Test Whether An Object Is A Window

Fit the Thomas Point Process by Minimum Contrast

Interpret Fitted Model for Metropolis-Hastings Simulation.

The Soft Core Point Process Model

rshift.splitppp

Randomly Shift a List of Point Patterns

Class of Point Patterns

Determine Initial State for Metropolis-Hastings Simulation.

Create a Pixel Image Object

Set Control Parameters for Metropolis-Hastings Algorithm.

Apply Vector Translation

selfcrossing.psp

Crossing Points in a Line Segment Pattern

Dilate a Window

Print a Fitted Point Process Model

Extract or Replace Subset of Point Pattern

Evaluate Expression Involving Function Arrays

Distance Map of Line Segment Pattern

Apply Vector Translation To Point Pattern

Extract Subset of Function Values

Fit the Matern Cluster Point Process by Minimum Contrast

plot.hyperframe

Plot Entries in a Hyperframe

Neighbourhood density function

Create a Line Segment Pattern

spatstat-internal

Internal spatstat functions

Saturated Pairwise Interaction Point Process Family

Summary of a Line Segment Pattern Dataset

Pine saplings in Finland.

Vertices of a Window

Extract Subset of Image

Define Point Process Model for Metropolis-Hastings Simulation.

Estimate the empty space function F

plot a Spatial Point Pattern

Marked J Function

Print Brief Details of a Spatial Window

Evaluate Logical Expression Involving Pixel Images and Return Region Where Expression is True

Simulate Matern Model I

summary.splitppp

Summary of a Split Point Pattern

bounding.box.xy

Convex Hull of Points

Convert Polygonal Region into Different Format

Multitype Nearest Neighbour Distance Function (i-to-any)

Apply Affine Transformation To Window

Simulate point patterns using the Metropolis-Hastings algorithm.

Sample Quantiles of Pixel Image

Plot a List of Point Patterns

Nearest neighbour distances

Generate grid of parallel lines with random displacement

Mean Pixel Value in an Image

Swedish Pines Point Pattern

Distance to Boundary of Window

Apply Vector Translation To Line Segment Pattern

Convert Pixel Image to Another Unit of Length

complement.owin

Take Complement of a Window

Extract Original Data from a Fitted Point Process Model

Determine Whether One Window is Contained In Another

Pair Correlation Function

Biological Cells Point Pattern

Evaluate an Expression in Each Row of a Hyperframe

Simulate Gauss-Poisson Process

Simulate Point Process Models using the Metropolis-Hastings Algorithm.