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spatstat (version 1.12-4)

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

1.12-4

License

GPL (>= 2)

Maintainer

Adrian Baddeley

Last Published

March 22nd, 2025

Functions in spatstat (1.12-4)

Fit the Matern Cluster Point Process by Minimum Contrast

Multitype K Function (i-to-any)

Distance Map of Point Pattern

Inhomogeneous Cross K Function

Inhomogeneous K-function

multiplicity.ppp

Count Multiplicity of Duplicate Points

Fit Point Process Model to Data

Estimate the I-function

Orientation Angles of Line Segments

Extract Quadrature Scheme Used to Fit a Point Process Model

Interactively Add Points

Hughes' Amacrine Cell Data

Berman-Huntington points and lines data

Sample Quantiles of Pixel Image

Level Set of a Pixel Image

Pairwise distances between two different line segment patterns

Convert Data To Class psp

Diagnostic Plots for Fitted Point Process Model

Multitype J Function (i-to-any)

The Soft Core Point Process Model

Reduced Second Moment Measure

Class of Images

Plot a List of Point Patterns

Estimate the empty space function F

The Strauss / Hard Core Point Process Model

Calculate four standard summary functions of a point pattern.

K-function using FFT

Perfect Simulation of the Strauss Process

Apply Affine Transformation To Window

Tropical rain forest trees

The Lennard-Jones Potential

Weighted Empirical Cumulative Distribution Function

Harkness-Isham ants' nests data

ANOVA for Fitted Point Process Models

as.data.frame.ppp

Coerce Point Pattern to a Data Frame

Apply Affine Transformation To Point Pattern

Bounding Box of a Window or Point Pattern

Beadlet Anemones Data

Endpoints of Line Segment Pattern

Test Whether Two Pixel Images Are Compatible

Interactively Define a Polygon

Extract Original Data from a Fitted Point Process Model

Basis for Harmonic Functions

Contour plot of pixel image

Summarise Marks in Every Neighbourhood in a Point Pattern

Nearest neighbour distances

Distance to Boundary of Window

rmhmodel.default

Build Point Process Model for Metropolis-Hastings Simulation.

Class of Line Segment Patterns

Test Whether Points Are Inside A Window

Set Control Parameters for Metropolis-Hastings Algorithm.

Centroid of a window

Coefficients of Fitted Point Process Model

Summarizing a Quadrature Scheme

Nearest neighbour

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

The Spatstat Package

Perspective Plot of Pixel Image

Corners of a rectangle

Extract Subset of Function Values

Fitted Conditional Intensity for Point Process Model

Hutchings' Bramble Canes data

Pair Correlation Function of Point Pattern

Test whether Object is Multitype

The Multitype Strauss Point Process Model

Japanese Pines Point Pattern

Evaluate an Expression in Each Row of a Hyperframe

The Strauss Point Process Model

Histogram of Pixel Values in an Image

Test Whether Two Function Objects Are Compatible

Artificial Data Point Pattern

Clark and Evans Aggregation Index

Convert Pixel Image from Numeric to Factor

Exponential Energy Marks

Fit the Thomas Point Process by Minimum Contrast

Neighbourhood density function

Beta Ganglion Cells in Cat Retina, Old Version

Simulate Matern Model II

Marked Nearest Neighbour Distance Function

Simulate point patterns using the Metropolis-Hastings algorithm.

Distance for a Point Pattern Matching

summary.splitppp

Summary of a Split Point Pattern

Test Whether An Object Is A Fitted Point Process Model

Estimate the J-function

Convert Data To Class ppp

pairdist.default

Pairwise distances

Nearest Neighbour in Another Point Pattern

Point Patterns of New Brunswick Forest Fires

spatstat-deprecated

Deprecated spatstat functions

Diggle-Gratton model

Test Whether A Point Process Model is Marked

Apply Affine Transformation To Line Segment Pattern

Create a Pixel Image Object

Kolmogorov-Smirnov Test for Point Process Model

Marked J Function

Interpolate a Pixel Image

bounding.box.xy

Convex Hull of Points

Convert to Pixel Image

Print a Fitted Point Process Model

Determine Duplicated Points in a Spatial Point Pattern

Print Brief Details of a Line Segment Pattern Dataset

Nearest-Neighbour Correlation of Marked Point Pattern

Print a Quadrature Scheme

Convex Hull of Points

Plot a Spatial Window

Simulation envelopes of summary function

Multitype K Function (Cross-type)

Ord's Interaction model

Plot a List of Things

Marked K-Function

Simulate Simple Sequential Inhibition

Generic Pairwise Interaction model

Nearest neighbour distances between line segments

Evaluate Expression Involving Pixel Images

Distance Between Two Point Patterns

Pairwise distances

Poisson Point Process Model

Rotate a Point Pattern

Lengths of Line Segments

plot a Spatial Point Pattern

nearest.raster.point

Find Pixel Nearest to a Given Point

Simulate Baddeley-Silverman Cell Process

Class of Fitted Point Process Models

Rectangular grid of points

Kernel Smoothing of Line Segment Pattern

Saturated Pairwise Interaction model

rshift.splitppp

Randomly Shift a List of Point Patterns

Multitype J Function (i-to-j)

Humberside Data on Childhood Leukaemia and Lymphoma

rescue.rectangle

Convert Window Back To Rectangle

Plot a Pixel Image

Inhomogeneous Multitype K Dot Function

selfcrossing.psp

Crossing Points in a Line Segment Pattern

plot.hyperframe

Plot Entries in a Hyperframe

Simulate Matern Model I

Create a Line Segment Pattern

Data and Code From JRSS Discussion Paper on Residuals

Generic Ord Interaction model

Compute Quadrature Weights Based on Grid Counts

Apply Function to Every Neighbourhood in a Point Pattern

Random Re-Labelling of Point Pattern

Q-Q Plot of Residuals from Fitted Point Process Model

Plot Function Valuesn

Simulate Point Process Models using the Metropolis-Hastings Algorithm.

Convert Window to Another Unit of Length

Simulate Thomas Process

Convert Pixel Image to Matrix

Longleaf Pines Point Pattern

Extract or Replace Subset of a List of Things

Nearest Neighbour Distance Function G

Spruces Point Pattern

Convert Data To Class owin

density.splitppp

Kernel Smoothed Intensity of Split Point Pattern

Dilate a Window

Define Point Process Model for Metropolis-Hastings Simulation.

Method of Minimum Contrast

Distance to Boundary of Window

Sufficient Statistic of Point Process Model

Combine Two Line Segment Patterns

Create a Point Pattern

California Redwoods Point Pattern (Entire Dataset)

Quadrat counting for a point pattern

Aherne's hamster tumour data

Rotate a Line Segment Pattern

Pairwise distances between two different point patterns

dirichlet.weights

Compute Quadrature Weights Based on Dirichlet Tessellation

subset.splitppp

Extract or Replace Sub-Patterns

Spatial smoothing of observations at irregular points

Update a Fitted Point Process Model

Reduced Sample Estimator using Histogram Data

Simulated Point Pattern

Safely Convert Point Pattern Window to Binary Mask

California Redwoods Point Pattern (Ripley's Subset)

spatstat.options

Internal Options in Spatstat Package

New Zealand Trees Point Pattern

Concatenate x,y Coordinate Vectors

Summary of a Line Segment Pattern Dataset

Test Whether Marks Are Present

Function Arrays for Spatial Patterns

Summary of a Point Pattern Dataset

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

Extract Dummy Points Used to Fit a Point Process Model

MultiStraussHard

The Multitype/Hard Core Strauss Point Process Model

Generate Multitype Poisson Point Pattern

Extract or Replace Subset of Point Pattern

Pairwise distances

Extract Subset of Line Segment Pattern

spatstat-internal

Internal spatstat functions

Summarizing a Fitted Point Process Model

Rotate a Window

complement.owin

Take Complement of a Window

The Piecewise Constant Pairwise Interaction Point Process Model

Pixel Image Approximation of a Window

is.multitype.ppp

Test Whether A Point Pattern is Multitype

Extract the Interaction from a Fitted Point Process Model

Simulate Stratified Random Point Pattern

Distance Map of Line Segment Pattern

Area of a Window

Midpoints of Line Segment Pattern

Randomly Shift a Line Segment Pattern

Intersection or Union of Two Windows

Class of Point Patterns

Chorley-Ribble Cancer Data

Simulate Neyman-Scott Process

Estimate window from points alone

Apply Vector Translation

Data Frames of Function Values

Lansing Woods Point Pattern

Simulate Matern Cluster Process

Generate Poisson Random Line Process

Kaplan-Meier and Reduced Sample Estimator using Histograms

Generate a Default Pattern of Dummy Points

plot a Fitted Point Process Model

Extract Unique Points from a Spatial Point Pattern

Simulate systematic random point pattern

Determine Whether One Window is Contained In Another

Profile Maximum Pseudolikelihood

Set or Reset the Marks in a Point Pattern

Lurking variable plot

Pairwise distances between line segments

Read Point Pattern From Data File

Identify Points in a Point Pattern

is.multitype.ppm

Test Whether A Point Process Model is Multitype

Print Brief Details of an Image

Apply Vector Translation To Point Pattern

Apply Vector Translation To Line Segment Pattern

Test Whether An Object Is A Pixel Image

Generate N Uniform Random Points

Vertices of a Window

Areas of Morphological Erosions

Swedish Pines Point Pattern

Kaplan-Meier Estimator using Histogram Data

Pair Correlation Function

Window in Shape of Letter R

Apply Affine Transformation

Saturated Pairwise Interaction Point Process Family

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

Biological Cells Point Pattern

Fit a Log-Gaussian Cox Point Process by Minimum Contrast

Convert dataset to another unit of length

Determine Initial State for Metropolis-Hastings Simulation.

Pairwise distances

Mark Correlation Function

Prediction from a Fitted Point Process Model

plot a Spatial Line Segment Pattern

Cartesian Coordinates for a Pixel Raster

plot a Spatial Quadrature Scheme

Set Covariance of a Window

Generate N Random Multitype Points

Summarizing a Pixel Image

Generate grid of parallel lines with random displacement

Randomly Shift a Point Pattern

Divide Point Pattern into Sub-patterns

Print Brief Details of a Spatial Window

Ord Interaction Process Family

Apply Vector Translation To Pixel Image

Create a Window

Pair Correlation Function obtained from K Function

Superimpose Several Point Patterns

Plot a Function Array

Remove Marks from a Marked Point Pattern

Print Progress Reports

Convert Point Pattern to Another Unit of Length

Define Point Process Model for Metropolis-Hastings Simulation.

Name for Unit of Length

Union of Data and Dummy Points

Interaction Distance of a Point Process

Apply Vector Translation To Window

Variance-Covariance Matrix for a Fitted Point Process Model

Spokes pattern of dummy points

Summary of a Spatial Window

Extract Subset of Function Array

Reset Values in Subset of Image

Simulate from a Fitted Point Process Model

Crossing Points of Two Line Segment Patterns

Kernel Smoothed Intensity of Point Pattern

Distance Map of Window

Geyer's Saturation Point Process Model

Calculate Statistic for All Types in a Multitype Point Pattern

Expand Window By Factor

Evaluate Expression Involving Functions

Diameter of a Window

Test Whether A Point Pattern is Marked

Test Whether An Object Is A Window

Log Likelihood for Poisson Point Process Model

Pair Correlation Function obtained from array of K functions

Ponderosa Pine Tree Point Pattern

Print Brief Details of a Point Pattern Dataset

Generate a Quadrature Scheme from a Point Pattern

Generate N Random Points

Convert Line Segment Pattern to Another Unit of Length

Random Thinning

Cut margins from rectangle

Plot a plotppm Object Created by plot.ppm

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

Beta Ganglion Cells in Cat Retina

crossdist.default

Pairwise distances between two different sets of points

Convert Point Pattern Marks from Numeric to Factor

Circular Window

Pine saplings in Finland.

Hyper Data Frame

Test Whether An Object Is A Point Pattern

Mean Pixel Value in an Image

pppmatching.object

Class of Point Matchings

Class of Quadrature Schemes

Generate Poisson Point Pattern

Interpret Fitted Model for Metropolis-Hastings Simulation.

Generate N Uniform Random Points in a Disc

Summary of a List of Things

pairwise.family

Pairwise Interaction Process Family

Create a Point Matching

Residuals for Fitted Point Process Model

Extract Subset of Image