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spatstat (version 1.11-1)

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

16,590

Version

1.11-1

License

GPL version 2 or newer

Maintainer

Adrian Baddeley

Last Published

March 22nd, 2025

Functions in spatstat (1.11-1)

Apply Function to Every Neighbourhood in a Point Pattern

complement.owin

Take Complement of a Window

Reduced Second Moment Measure

Pairwise distances

The Spatstat Package

Marked K-Function

dirichlet.weights

Compute Quadrature Weights Based on Dirichlet Tessellation

Convert Data To Class ppp

Kernel Smoothing of Line Segment Pattern

Biological Cells Point Pattern

Inhomogeneous Cross K Function

Rectangular grid of points

Identify Points in a Point Pattern

Test Whether Two Pixel Images Are Compatible

Multitype K Function (Cross-type)

Geyer's Saturation Point Process Model

K-function using FFT

Convert Point Pattern Marks from Numeric to Factor

Mean Pixel Value in an Image

Distance Map of Point Pattern

density.splitppp

Kernel Smoothed Intensity of Split Point Pattern

Inhomogeneous K-function

Concatenate x,y Coordinate Vectors

The Multitype Strauss Point Process Model

Humberside Data on Childhood Leukaemia and Lymphoma

Test Whether An Object Is A Window

Marked Nearest Neighbour Distance Function

Circular Window

Pair Correlation Function obtained from K Function

Method of Minimum Contrast

Kernel Smoothed Intensity of Point Pattern

pairdist.default

Pairwise distances

The Strauss Point Process Model

Simulation envelopes of summary function

Print Brief Details of a Spatial Window

Marked J Function

Estimate the empty space function F

Chorley-Ribble Cancer Data

Perfect Simulation of the Strauss Process

Convert Pixel Image to Matrix

is.multitype.ppp

Test Whether A Point Pattern is Multitype

The Soft Core Point Process Model

Pair Correlation Function

Endpoints of Line Segment Pattern

Pixel Image Approximation of a Window

Compute Quadrature Weights Based on Grid Counts

Convert Point Pattern to Another Unit of Length

Pine saplings in Finland.

Q-Q Plot of Residuals from Fitted Point Process Model

Ord's Interaction model

Print Brief Details of a Point Pattern Dataset

Basis for Harmonic Functions

Interactively Add Points

Hutchings' Bramble Canes data

Create a Pixel Image Object

Harkness-Isham ants' nests data

Estimate the I-function

Apply Affine Transformation To Window

Convert Data To Class psp

Estimate the J-function

Distance to Boundary of Window

The Strauss / Hard Core Point Process Model

Histogram of Pixel Values in an Image

Hughes' Amacrine Cell Data

Convert Window to Another Unit of Length

Saturated Pairwise Interaction Point Process Family

Test Whether Points Are Inside A Window

Fit a Log-Gaussian Cox Point Process by Minimum Contrast

Distance Map of Line Segment Pattern

Beta Ganglion Cells in Cat Retina

Tropical rain forest trees

Test Whether A Point Pattern is Marked

Pair Correlation Function obtained from array of K functions

Kaplan-Meier Estimator using Histogram Data

Pairwise distances between line segments

Fit Point Process Model to Data

Test Whether A Point Process Model is Marked

Convert Line Segment Pattern to Another Unit of Length

Poisson Point Process Model

Longleaf Pines Point Pattern

Artificial Data Point Pattern

plot a Fitted Point Process Model

crossdist.default

Pairwise distances between two different sets of points

Randomly Shift a Point Pattern

Extract Subset of Function Array

Simulate Baddeley-Silverman Cell Process

Lansing Woods Point Pattern

Midpoints of Line Segment Pattern

Estimate window from points alone

Create a Line Segment Pattern

Extract Original Data from a Fitted Point Process Model

Extract or Replace Subset of Point Pattern

Data and Code From JRSS Discussion Paper on Residuals

Summarizing a Quadrature Scheme

plot a Spatial Quadrature Scheme

Generate N Uniform Random Points

Test Whether An Object Is A Fitted Point Process Model

Mark Correlation Function

Class of Images

nearest.raster.point

Find Pixel Nearest to a Given Point

Plot a plotppm Object Created by plot.ppm

Multitype J Function (i-to-j)

Optimal Match Between Two Point Patterns

Generate N Uniform Random Points in a Disc

The Piecewise Constant Pairwise Interaction Point Process Model

Evaluate Expression Involving Pixel Images

Simulate Point Process Models using the Metropolis-Hastings Algorithm.

summary.splitppp

Summary of a Split Point Pattern

Class of Point Patterns

Generic Pairwise Interaction model

Intersection or Union of Two Windows

Pairwise distances between two different point patterns

Extract Subset of Image

Convert dataset to another unit of length

Function Arrays for Spatial Patterns

California Redwoods Point Pattern (Entire Dataset)

Aherne's hamster tumour data

Summary of a Spatial Window

Define Point Process Model for Metropolis-Hastings Simulation.

Test Whether Marks Are Present

Test Whether An Object Is A Point Pattern

selfcrossing.psp

Crossing Points in a Line Segment Pattern

Summarise Marks in Every Neighbourhood in a Point Pattern

New Zealand Trees Point Pattern

Print Brief Details of a Line Segment Pattern Dataset

Ord Interaction Process Family

Orientation Angles of Line Segments

Apply Vector Translation To Pixel Image

Randomly Shift a Line Segment Pattern

Simulate Stratified Random Point Pattern

Print a Quadrature Scheme

Level Set of a Pixel Image

Apply Vector Translation To Point Pattern

subset.splitppp

Extract or Replace Sub-Patterns

Apply Vector Translation

Extract Unique Points from a Spatial Point Pattern

Cut margins from rectangle

Superimpose Several Point Patterns

Simulate systematic random point pattern

Data Frames of Function Values

Apply Affine Transformation

Window in Shape of Letter R

Point Patterns of New Brunswick Forest Fires

Update a Fitted Point Process Model

Generic Ord Interaction model

Generate Multitype Poisson Point Pattern

Diggle-Gratton model

spatstat-internal

Internal spatstat functions

Centroid of a window

spatstat.options

Internal Options in Spatstat Package

is.multitype.ppm

Test Whether A Point Process Model is Multitype

Summarizing a Fitted Point Process Model

Plot a Function Array

Bounding Box of a Window

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

Plot a Spatial Window

The Lennard-Jones Potential

Nearest neighbour distances

Crossing Points of Two Line Segment Patterns

Test Whether Two Function Objects Are Compatible

Name for Unit of Length

Nearest Neighbour in Another Point Pattern

Determine Duplicated Points in a Spatial Point Pattern

Class of Fitted Point Process Models

Nearest-Neighbour Correlation of Marked Point Pattern

Create a Point Pattern

Corners of a rectangle

Berman-Huntington points and lines data

Print Brief Details of an Image

Fitted Conditional Intensity for Point Process Model

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

Calculate four standard summary functions of a point pattern.

Class of Line Segment Patterns

Area of a Window

Reduced Sample Estimator using Histogram Data

Rotate a Line Segment Pattern

Kaplan-Meier and Reduced Sample Estimator using Histograms

Diameter of a Window

Summary of a Line Segment Pattern Dataset

Generate N Random Points

Rotate a Point Pattern

Perspective Plot of Pixel Image

Spruces Point Pattern

Plot Function Valuesn

Fit the Thomas Point Process by Minimum Contrast

plot a Spatial Point Pattern

Fit the Matern Cluster Point Process by Minimum Contrast

Japanese Pines Point Pattern

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

Residuals for Fitted Point Process Model

Random Re-Labelling of Point Pattern

Interaction Distance of a Point Process

Generate Poisson Random Line Process

Cartesian Coordinates for a Pixel Raster

Saturated Pairwise Interaction model

Generate N Random Multitype Points

Generate Poisson Point Pattern

Convert to Pixel Image

Generate a Default Pattern of Dummy Points

Sufficient Statistic of Point Process Model

Distance to Boundary of Window

Expand Window By Factor

Lurking variable plot

Determine Whether One Window is Contained In Another

Prediction from a Fitted Point Process Model

Extract Quadrature Scheme Used to Fit a Point Process Model

California Redwoods Point Pattern (Ripley's Subset)

Summary of a List of Things

Contour plot of pixel image

Extract Dummy Points Used to Fit a Point Process Model

Test Whether An Object Is A Pixel Image

Test whether Object is Multitype

Pairwise distances

Create a Window

Plot a List of Point Patterns

Quadrat counting for a point pattern

Simulate point patterns using the Metropolis-Hastings algorithm.

Determine Initial State for Metropolis-Hastings Simulation.

Read Point Pattern From Data File

Extract Subset of Function Values

Vertices of a Window

Multitype J Function (i-to-any)

Areas of Morphological Erosions

Beta Ganglion Cells in Cat Retina, Old Version

Lengths of Line Segments

pairwise.family

Pairwise Interaction Process Family

Simulate Simple Sequential Inhibition

Print a Fitted Point Process Model

Rotate a Window

Apply Vector Translation To Window

Set or Reset the Marks in a Point Pattern

Apply Affine Transformation To Line Segment Pattern

Apply Affine Transformation To Point Pattern

Inhomogeneous Multitype K Dot Function

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

Pairwise distances between two different line segment patterns

Multitype K Function (i-to-any)

Convert Pixel Image from Numeric to Factor

MultiStraussHard

The Multitype/Hard Core Strauss Point Process Model

Exponential Energy Marks

ANOVA for Fitted Point Process Models

Distance Map of Window

Convert Data To Class owin

multiplicity.ppp

Count Multiplicity of Duplicate Points

Dilate a Window

Simulate Matern Cluster Process

rshift.splitppp

Randomly Shift a List of Point Patterns

rescue.rectangle

Convert Window Back To Rectangle

Extract Subset of Line Segment Pattern

Swedish Pines Point Pattern

Set Covariance of a Window

Sample Quantiles of Pixel Image

Simulate Matern Model II

Random Thinning

Extract or Replace Subset of a List of Things

Nearest Neighbour Distance Function G

Combine Two Line Segment Patterns

Calculate Statistic for All Types in a Multitype Point Pattern

spatstat-deprecated

Deprecated spatstat functions

Diagnostic Plots for Fitted Point Process Model

Nearest neighbour

plot a Spatial Line Segment Pattern

Plot a List of Things

Simulate Neyman-Scott Process

Generate a Quadrature Scheme from a Point Pattern

Set Control Parameters for Metropolis-Hastings Algorithm.

Apply Vector Translation To Line Segment Pattern

Variance-Covariance Matrix for a Fitted Point Process Model

Summary of a Point Pattern Dataset

Remove Marks from a Marked Point Pattern

Union of Data and Dummy Points

Simulate from a Fitted Point Process Model

Coefficients of Fitted Point Process Model

Evaluate Expression Involving Functions

Pairwise distances

Plot a Pixel Image

Pair Correlation Function of Point Pattern

Profile Maximum Pseudolikelihood

Class of Quadrature Schemes

Simulate Thomas Process

Simulate Matern Model I

Print Progress Reports

Spokes pattern of dummy points

Divide Point Pattern into Sub-patterns

Summarizing a Pixel Image

Simulated Point Pattern