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spatstat (version 1.10-3)

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 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

16,015

Version

1.10-3

License

GPL version 2 or newer

Maintainer

Adrian Baddeley

Last Published

March 22nd, 2025

Functions in spatstat (1.10-3)

Multitype J Function (i-to-any)

Convert Pixel Image to Matrix

Biological Cells Point Pattern

Diagnostic Plots for Fitted Point Process Model

Aherne's hamster tumour data

Multitype K Function (Cross-type)

Tropical rain forest trees

Diameter of a Window Frame

Define Point Process Model for Metropolis-Hastings Simulation.

Test Whether An Object Is A Pixel Image

Distance Map of Line Segment Pattern

Generate N Random Points

Apply Vector Translation To Pixel Image

is.multitype.ppm

Test Whether A Point Process Model is Multitype

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

Simulate Matern Model II

Orientation Angles of Line Segments

Concatenate x,y Coordinate Vectors

Exponential Energy Marks

The Multitype Strauss Point Process Model

selfcrossing.psp

Crossing Points in a Line Segment Pattern

Lengths of Line Segments

Pair Correlation Function obtained from K Function

plot a Spatial Point Pattern

Convert Data To Class owin

Kernel Smoothing of Line Segment Pattern

K-function using FFT

Function Arrays for Spatial Patterns

Spokes pattern of dummy points

Longleaf Pines Point Pattern

Create a Line Segment Pattern

Inhomogeneous Cross K Function

Generate N Uniform Random Points

Estimate the J-function

Distance to Boundary of Window

Simulate Neyman-Scott Process

Bounding Box of a Window

Print a Quadrature Scheme

The Lennard-Jones Potential

Beta Ganglion Cells in Cat Retina, Old Version

Random Re-Labelling of Point Pattern

Randomly Shift a Line Segment Pattern

MultiStraussHard

The Multitype/Hard Core Strauss Point Process Model

pairwise.family

Pairwise Interaction Process Family

Marked J Function

Extract Subset of Function Values

Test whether Object is Multitype

Nearest neighbour

Lurking variable plot

Hutchings' Bramble Canes data

Set Covariance of a Window

Superimpose Several Point Patterns

Print Brief Details of a Line Segment Pattern Dataset

Simulate Baddeley-Silverman Cell Process

Convert Point Pattern Marks from Numeric to Factor

Berman-Huntington points and lines data

Dilate a Window

Determine Initial State for Metropolis-Hastings Simulation.

Test Whether An Object Is A Point Pattern

Class of Images

Pairwise distances

Test Whether A Point Pattern is Marked

spatstat.options

Internal Options in Spatstat Package

Simulate Point Process Models using the Metropolis-Hastings Algorithm.

Ord Interaction Process Family

Fitted Conditional Intensity for Point Process Model

Swedish Pines Point Pattern

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

Summarise Marks in Every Neighbourhood in a Point Pattern

Remove Marks from a Marked Point Pattern

Lansing Woods Point Pattern

Extract Subset of Function Array

Fit the Thomas Point Process by Minimum Contrast

Perspective Plot of Pixel Image

Test Whether An Object Is A Window

Plot a List of Things

Sufficient Statistic of Point Process Model

Cartesian Coordinates for a Pixel Raster

California Redwoods Point Pattern (Entire Dataset)

Plot a Pixel Image

plot a Fitted Point Process Model

Saturated Pairwise Interaction model

Read Point Pattern From Data File

Simulate systematic random point pattern

Apply Function to Every Neighbourhood in a Point Pattern

Estimate the empty space function F

Summarizing a Quadrature Scheme

plot a Spatial Line Segment Pattern

Extract Subset of Image

Test Whether Two Function Objects Are Compatible

Test Whether Two Pixel Images Are Compatible

Kernel Smoothed Intensity of Point Pattern

Distance Map of Window

Circular Window

Test Whether Points Are Inside A Window

Pine saplings in Finland.

Randomly Shift a Point Pattern

Area of a Window

Data and Code From JRSS Discussion Paper on Residuals

Apply Vector Translation

The Soft Core Point Process Model

Interaction Distance of a Point Process

Cut margins from rectangle

Contour plot of pixel image

Distance Map of Point Pattern

Mean Pixel Value in an Image

multiplicity.ppp

Count Multiplicity of Duplicate Points

nearest.raster.point

Find Pixel Nearest to a Given Point

New Zealand Trees Point Pattern

Plot a plotppm Object Created by plot.ppm

Set or Reset the Marks in a Point Pattern

Convert dataset to another unit of length

Generate a Quadrature Scheme from a Point Pattern

Ord's Interaction model

Apply Affine Transformation To Point Pattern

Test Whether An Object Is A Fitted Point Process Model

Kaplan-Meier Estimator using Histogram Data

Kaplan-Meier and Reduced Sample Estimator using Histograms

Multitype J Function (i-to-j)

Japanese Pines Point Pattern

Poisson Point Process Model

The Piecewise Constant Pairwise Interaction Point Process Model

pairdist.default

Pairwise distances

Beta Ganglion Cells in Cat Retina

Artificial Data Point Pattern

Profile Maximum Pseudolikelihood

California Redwoods Point Pattern (Ripley's Subset)

Rotate a Line Segment Pattern

Nearest Neighbour Distance Function G

Compute Quadrature Weights Based on Grid Counts

Fit a Log-Gaussian Cox Point Process by Minimum Contrast

Plot a Function Array

Diggle-Gratton model

Class of Point Patterns

Pairwise distances

Variance-Covariance Matrix for a Fitted Point Process Model

plot a Spatial Quadrature Scheme

Convert to Pixel Image

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

Rectangular grid of points

Fit the Matern Cluster Point Process by Minimum Contrast

Summary of a Point Pattern Dataset

Apply Affine Transformation To Line Segment Pattern

Humberside Data on Childhood Leukaemia and Lymphoma

Interactively Add Points

Generate a Default Pattern of Dummy Points

complement.owin

Take Complement of a Window

Convert Pixel Image from Numeric to Factor

Print a Fitted Point Process Model

Saturated Pairwise Interaction Point Process Family

Print Brief Details of a Spatial Window

Pixel Image Approximation of a Window

Create a Point Pattern

Print Brief Details of an Image

Extract Quadrature Scheme Used to Fit a Point Process Model

Evaluate Expression Involving Pixel Images

Simulate Simple Sequential Inhibition

Quadrat counting for a point pattern

Midpoints of Line Segment Pattern

Update a Fitted Point Process Model

Convert Line Segment Pattern to Another Unit of Length

Perfect Simulation of the Strauss Process

Generate Poisson Point Pattern

Extract Unique Points from a Spatial Point Pattern

Rotate a Point Pattern

Convert Window to Another Unit of Length

Divide Point Pattern into Sub-patterns

Name for Unit of Length

Summary of a Spatial Window

Estimate the I-function

Inhomogeneous K-function

Generic Ord Interaction model

Generic Pairwise Interaction model

Marked K-Function

Evaluate Expression Involving Functions

Hughes' Amacrine Cell Data

Window in Shape of Letter R

Corners of a rectangle

Pair Correlation Function obtained from array of K functions

Mark Correlation Function

Centroid of a window

Test Whether Marks Are Present

Nearest Neighbour in Another Point Pattern

Plot a Spatial Window

Fit Point Process Model to Data

Simulate Matern Model I

Pairwise distances between line segments

Estimate window from points alone

rshift.splitppp

Randomly Shift a List of Point Patterns

Pair Correlation Function of Point Pattern

Nearest neighbour distances

Class of Line Segment Patterns

rescue.rectangle

Convert Window Back To Rectangle

Combine Two Line Segment Patterns

Summary of a Line Segment Pattern Dataset

Convert Data To Class psp

Set Control Parameters for Metropolis-Hastings Algorithm.

Pairwise distances between two different line segment patterns

Simulate Stratified Random Point Pattern

Basis for Harmonic Functions

spatstat-deprecated

Deprecated spatstat functions

Random Thinning

Intersection or Union of Two Windows

Level Set of a Pixel Image

Determine Whether One Window is Contained In Another

Class of Quadrature Schemes

Plot Function Valuesn

ANOVA for Fitted Point Process Models

Inhomogeneous Multitype K Dot Function

Distance to Boundary of Window

Pairwise distances between two different point patterns

Simulate Matern Cluster Process

Generate N Random Multitype Points

Extract Dummy Points Used to Fit a Point Process Model

Generate N Uniform Random Points in a Disc

Summarizing a Pixel Image

Identify Points in a Point Pattern

spatstat-internal

Internal spatstat functions

dirichlet.weights

Compute Quadrature Weights Based on Dirichlet Tessellation

Class of Fitted Point Process Models

Sample Quantiles of Pixel Image

Residuals for Fitted Point Process Model

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

Apply Vector Translation To Line Segment Pattern

Reduced Second Moment Measure

Apply Affine Transformation To Window

Calculate Statistic for All Types in a Multitype Point Pattern

Convert Data To Class ppp

Crossing Points of Two Line Segment Patterns

Data Frames of Function Values

Test Whether A Point Process Model is Marked

Simulate from a Fitted Point Process Model

Apply Vector Translation To Window

Apply Affine Transformation

Determine Duplicated Points in a Spatial Point Pattern

Endpoints of Line Segment Pattern

Pair Correlation Function

Expand Window By Factor

Calculate four standard summary functions of a point pattern.

Histogram of Pixel Values in an Image

Multitype K Function (i-to-any)

Print Brief Details of a Point Pattern Dataset

Simulation envelopes of summary function

Areas of Morphological Erosions

The Spatstat Package

Create a Pixel Image Object

Extract Original Data from a Fitted Point Process Model

Generate Poisson Random Line Process

Pairwise distances

Plot a List of Point Patterns

Union of Data and Dummy Points

Spruces Point Pattern

Summarizing a Fitted Point Process Model

crossdist.default

Pairwise distances between two different sets of points

Method of Minimum Contrast

Rotate a Window

Prediction from a Fitted Point Process Model

Coefficients of Fitted Point Process Model

Extract Subset of Line Segment Pattern

Geyer's Saturation Point Process Model

Simulated Point Pattern

The Strauss Point Process Model

Marked Nearest Neighbour Distance Function

Q-Q Plot of Residuals from Fitted Point Process Model

Chorley-Ribble Cancer Data

Generate Multitype Poisson Point Pattern

density.splitppp

Kernel Smoothed Intensity of Split Point Pattern

Apply Vector Translation To Point Pattern

Simulate Thomas Process

Nearest-Neighbour Correlation of Marked Point Pattern

Optimal Match Between Two Point Patterns

Simulate point patterns using the Metropolis-Hastings algorithm.

Reduced Sample Estimator using Histogram Data

Extract or Replace Subset of Point Pattern

Convert Point Pattern to Another Unit of Length

The Strauss / Hard Core Point Process Model

Harkness-Isham ants' nests data

is.multitype.ppp

Test Whether A Point Pattern is Multitype

Create a Window