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spatstat (version 1.11-6)

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

1.11-6

License

GPL version 2 or newer

Maintainer

Adrian Baddeley

Last Published

March 22nd, 2025

Functions in spatstat (1.11-6)

Diggle-Gratton model

Multitype K Function (i-to-any)

Convert Data To Class ppp

Concatenate x,y Coordinate Vectors

crossdist.default

Pairwise distances between two different sets of points

density.splitppp

Kernel Smoothed Intensity of Split Point Pattern

Distance to Boundary of Window

Test Whether An Object Is A Pixel Image

Distance Map of Point Pattern

Intersection or Union of Two Windows

Kolmogorov-Smirnov Test for Point Process Model

Pair Correlation Function of Point Pattern

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

Plot a Function Array

Plot a List of Point Patterns

Create a Point Pattern

Estimate the empty space function F

Plot Function Valuesn

Estimate the I-function

Combine Two Line Segment Patterns

Print a Quadrature Scheme

Print Brief Details of a Line Segment Pattern Dataset

Extract Original Data from a Fitted Point Process Model

bounding.box.xy

Convex Hull of Points

Weighted Empirical Cumulative Distribution Function

Perfect Simulation of the Strauss Process

Simulate Matern Model II

Cartesian Coordinates for a Pixel Raster

Test Whether Two Pixel Images Are Compatible

Window in Shape of Letter R

Generate a Default Pattern of Dummy Points

Set or Reset the Marks in a Point Pattern

California Redwoods Point Pattern (Entire Dataset)

Extract Unique Points from a Spatial Point Pattern

Residuals for Fitted Point Process Model

Fit the Matern Cluster Point Process by Minimum Contrast

Define Point Process Model for Metropolis-Hastings Simulation.

Areas of Morphological Erosions

pairdist.default

Pairwise distances

spatstat.options

Internal Options in Spatstat Package

plot a Spatial Line Segment Pattern

Extract Subset of Function Array

Humberside Data on Childhood Leukaemia and Lymphoma

Test Whether Marks Are Present

Extract or Replace Subset of a List of Things

Apply Function to Every Neighbourhood in a Point Pattern

The Piecewise Constant Pairwise Interaction Point Process Model

Nearest Neighbour in Another Point Pattern

Kernel Smoothing of Line Segment Pattern

Variance-Covariance Matrix for a Fitted Point Process Model

Simulate Thomas Process

Summary of a Spatial Window

Distance Map of Line Segment Pattern

Distance to Boundary of Window

Calculate Statistic for All Types in a Multitype Point Pattern

Generate Poisson Random Line Process

Inhomogeneous Cross K Function

Data and Code From JRSS Discussion Paper on Residuals

Crossing Points of Two Line Segment Patterns

Plot a Spatial Window

Simulate from a Fitted Point Process Model

Sample Quantiles of Pixel Image

Apply Affine Transformation To Line Segment Pattern

Simulate Simple Sequential Inhibition

Kernel Smoothed Intensity of Point Pattern

Convert to Pixel Image

Extract Dummy Points Used to Fit a Point Process Model

Rotate a Point Pattern

Test Whether An Object Is A Point Pattern

Extract or Replace Subset of Point Pattern

Pairwise distances between two different line segment patterns

Multitype K Function (Cross-type)

Class of Quadrature Schemes

Berman-Huntington points and lines data

Extract the Interaction from a Fitted Point Process Model

Superimpose Several Point Patterns

Saturated Pairwise Interaction model

Orientation Angles of Line Segments

spatstat-internal

Internal spatstat functions

Test Whether A Point Pattern is Marked

Generate Multitype Poisson Point Pattern

Rotate a Line Segment Pattern

Circular Window

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

Apply Vector Translation To Point Pattern

Longleaf Pines Point Pattern

Aherne's hamster tumour data

Mean Pixel Value in an Image

Rectangular grid of points

Histogram of Pixel Values in an Image

Interpret Fitted Model for Metropolis-Hastings Simulation.

Interpolate a Pixel Image

The Spatstat Package

Spokes pattern of dummy points

Japanese Pines Point Pattern

The Soft Core Point Process Model

MultiStraussHard

The Multitype/Hard Core Strauss Point Process Model

Apply Affine Transformation

Lurking variable plot

Simulate systematic random point pattern

Hughes' Amacrine Cell Data

Extract Subset of Image

Distance Map of Window

New Zealand Trees Point Pattern

Chorley-Ribble Cancer Data

Determine Initial State for Metropolis-Hastings Simulation.

Generate Poisson Point Pattern

Biological Cells Point Pattern

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

Remove Marks from a Marked Point Pattern

Marked J Function

Beta Ganglion Cells in Cat Retina, Old Version

Test Whether Points Are Inside A Window

Print a Fitted Point Process Model

Summarizing a Quadrature Scheme

Pairwise distances

Generic Pairwise Interaction model

Pairwise distances between two different point patterns

Saturated Pairwise Interaction Point Process Family

Artificial Data Point Pattern

Profile Maximum Pseudolikelihood

Simulation envelopes of summary function

Level Set of a Pixel Image

Pair Correlation Function obtained from K Function

Point Patterns of New Brunswick Forest Fires

Summarizing a Pixel Image

Extract Subset of Line Segment Pattern

plot a Spatial Point Pattern

Optimal Match Between Two Point Patterns

Fit Point Process Model to Data

Compute Quadrature Weights Based on Grid Counts

multiplicity.ppp

Count Multiplicity of Duplicate Points

Convert Window to Another Unit of Length

Simulate point patterns using the Metropolis-Hastings algorithm.

Generate a Quadrature Scheme from a Point Pattern

Set Control Parameters for Metropolis-Hastings Algorithm.

Rotate a Window

Plot a List of Things

Class of Line Segment Patterns

Simulated Point Pattern

Tropical rain forest trees

Simulate Neyman-Scott Process

Sufficient Statistic of Point Process Model

Apply Vector Translation

Union of Data and Dummy Points

Hutchings' Bramble Canes data

Diameter of a Window

Apply Vector Translation To Line Segment Pattern

Inhomogeneous K-function

Cut margins from rectangle

Fit the Thomas Point Process by Minimum Contrast

summary.splitppp

Summary of a Split Point Pattern

Harkness-Isham ants' nests data

Vertices of a Window

Lansing Woods Point Pattern

Create a Window

Convert Pixel Image to Matrix

rmhmodel.default

Build Point Process Model for Metropolis-Hastings Simulation.

Geyer's Saturation Point Process Model

Inhomogeneous Multitype K Dot Function

rescue.rectangle

Convert Window Back To Rectangle

Endpoints of Line Segment Pattern

Pine saplings in Finland.

Poisson Point Process Model

Basis for Harmonic Functions

Area of a Window

Convert Data To Class owin

Data Frames of Function Values

Coefficients of Fitted Point Process Model

plot a Spatial Quadrature Scheme

Quadrat counting for a point pattern

Generate N Uniform Random Points

Dilate a Window

Test Whether Two Function Objects Are Compatible

Fitted Conditional Intensity for Point Process Model

Swedish Pines Point Pattern

Class of Images

complement.owin

Take Complement of a Window

Test Whether An Object Is A Window

Log Likelihood for Poisson Point Process Model

nearest.raster.point

Find Pixel Nearest to a Given Point

Fit a Log-Gaussian Cox Point Process by Minimum Contrast

Method of Minimum Contrast

Mark Correlation Function

Nearest neighbour distances

pairwise.family

Pairwise Interaction Process Family

plot a Fitted Point Process Model

Print Brief Details of an Image

Apply Vector Translation To Pixel Image

Summary of a Line Segment Pattern Dataset

Random Re-Labelling of Point Pattern

Estimate window from points alone

Read Point Pattern From Data File

subset.splitppp

Extract or Replace Sub-Patterns

Apply Vector Translation To Window

Multitype J Function (i-to-j)

Determine Duplicated Points in a Spatial Point Pattern

Expand Window By Factor

K-function using FFT

Beta Ganglion Cells in Cat Retina

Create a Pixel Image Object

Kaplan-Meier Estimator using Histogram Data

Plot a Pixel Image

Convert dataset to another unit of length

ANOVA for Fitted Point Process Models

The Multitype Strauss Point Process Model

Interactively Define a Polygon

Kaplan-Meier and Reduced Sample Estimator using Histograms

Define Point Process Model for Metropolis-Hastings Simulation.

Simulate Stratified Random Point Pattern

Summary of a Point Pattern Dataset

Ord Interaction Process Family

Summarizing a Fitted Point Process Model

Test Whether A Point Process Model is Marked

Create a Line Segment Pattern

Simulate Matern Cluster Process

Extract Quadrature Scheme Used to Fit a Point Process Model

Random Thinning

rshift.splitppp

Randomly Shift a List of Point Patterns

Divide Point Pattern into Sub-patterns

Name for Unit of Length

Function Arrays for Spatial Patterns

Evaluate Expression Involving Functions

Test whether Object is Multitype

Determine Whether One Window is Contained In Another

Pair Correlation Function

Generic Ord Interaction model

Contour plot of pixel image

Class of Fitted Point Process Models

Corners of a rectangle

Convert Pixel Image from Numeric to Factor

Print Brief Details of a Spatial Window

Convert Line Segment Pattern to Another Unit of Length

Convert Point Pattern to Another Unit of Length

dirichlet.weights

Compute Quadrature Weights Based on Dirichlet Tessellation

spatstat-deprecated

Deprecated spatstat functions

Evaluate Expression Involving Pixel Images

Lengths of Line Segments

Randomly Shift a Point Pattern

Summarise Marks in Every Neighbourhood in a Point Pattern

Set Covariance of a Window

Nearest neighbour

Plot a plotppm Object Created by plot.ppm

Prediction from a Fitted Point Process Model

Simulate Matern Model I

Simulate Baddeley-Silverman Cell Process

Interaction Distance of a Point Process

California Redwoods Point Pattern (Ripley's Subset)

Generate N Uniform Random Points in a Disc

Generate N Random Multitype Points

Spruces Point Pattern

selfcrossing.psp

Crossing Points in a Line Segment Pattern

Nearest Neighbour Distance Function G

Estimate the J-function

Marked Nearest Neighbour Distance Function

The Strauss Point Process Model

Apply Affine Transformation To Window

Calculate four standard summary functions of a point pattern.

Bounding Box of a Window or Point Pattern

Convex Hull of Points

Centroid of a window

Convert Point Pattern Marks from Numeric to Factor

Pixel Image Approximation of a Window

is.multitype.ppm

Test Whether A Point Process Model is Multitype

Nearest neighbour distances between line segments

is.multitype.ppp

Test Whether A Point Pattern is Multitype

Pairwise distances

Pairwise distances between line segments

Pair Correlation Function obtained from array of K functions

Perspective Plot of Pixel Image

Print Brief Details of a Point Pattern Dataset

Update a Fitted Point Process Model

Multitype J Function (i-to-any)

Beadlet Anemones Data

Diagnostic Plots for Fitted Point Process Model

Exponential Energy Marks

Test Whether An Object Is A Fitted Point Process Model

Midpoints of Line Segment Pattern

Class of Point Patterns

Generate N Random Points

Extract Subset of Function Values

The Lennard-Jones Potential

Marked K-Function

Nearest-Neighbour Correlation of Marked Point Pattern

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

Simulate Point Process Models using the Metropolis-Hastings Algorithm.

Randomly Shift a Line Segment Pattern

Reset Values in Subset of Image

Ord's Interaction model

Apply Affine Transformation To Point Pattern

Reduced Second Moment Measure

The Strauss / Hard Core Point Process Model

Convert Data To Class psp

Interactively Add Points

Pairwise distances

Identify Points in a Point Pattern

Print Progress Reports

Q-Q Plot of Residuals from Fitted Point Process Model

Reduced Sample Estimator using Histogram Data

Summary of a List of Things