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spatstat (version 1.14-8)

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

1.14-8

License

GPL (>= 2)

Maintainer

Adrian Baddeley

Last Published

March 22nd, 2025

Functions in spatstat (1.14-8)

Multitype J Function (i-to-any)

Convert Data To Class ppp

Chorley-Ribble Cancer Data

as.data.frame.psp

Coerce Line Segment Pattern to a Data Frame

Data Frames of Function Values

pairdist.default

Pairwise distances

Print Brief Details of a Line Segment Pattern Dataset

Summarizing a Quadrature Scheme

Estimate the empty space function F

Calculate Summary Statistic for All Types in a Multitype Point Pattern

Expand Window By Factor

Evaluate Expression Involving Pixel Images

Generic Pairwise Interaction model

K-function using FFT

Find Largest Circle Inside Window

adaptive.density

Intensity Estimate of Point Pattern Using Tessellation

Ord's Interaction model

Interpolate a Pixel Image

Method of Minimum Contrast

Interactively Add Points

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

Pairwise distances

Multitype pair correlation function

Dilate a Window

Apply Function to Every Neighbourhood in a Point Pattern

Multitype K Function (Cross-type)

Saturated Pairwise Interaction model

Piecewise Constant Saturated Pairwise Interaction Point Process Model

Apply Affine Transformation To Window

Kernel Smoothed Intensity of Point Pattern

Pixel Image Approximation of a Window

Distance Map of Point Pattern

Class of Quadrature Schemes

Hutchings' Bramble Canes data

complement.owin

Take Complement of a Window

Areas of Morphological Erosions

Beadlet Anemones Data

Convert Data To Tessellation

Hughes' Amacrine Cell Data

Evaluate an Expression in Each Row of a Hyperframe

Test Whether Two Function Objects Are Compatible

Fry Plot of Point Pattern

rescue.rectangle

Convert Window Back To Rectangle

Marked J Function

Function Arrays for Spatial Patterns

Convert Pixel Image from Numeric to Factor

Multitype K Function (i-to-any)

Rectangular grid of points

Class of Images

Pine saplings in Finland.

Dirichlet Tessellation of Point Pattern

Pair Correlation Function obtained from array of K functions

crossdist.default

Pairwise distances between two different sets of points

Simulation envelopes of summary function

Evaluate Expression Involving Functions

is.multitype.ppp

Test Whether A Point Pattern is Multitype

Circular Window

Kolmogorov-Smirnov Test for Point Process Model

Intersection of Two Tessellations

Pairwise distances between two different line segment patterns

The Spatstat Package

Lurking variable plot

Log Likelihood for Poisson Point Process Model

Classify Points in a Point Pattern

Artificial Data Point Pattern

Coefficients of Fitted Point Process Model

MultiStraussHard

The Multitype/Hard Core Strauss Point Process Model

Print a Fitted Point Process Model

Plot a plotppm Object Created by plot.ppm

Weighted Empirical Cumulative Distribution Function

dirichlet.weights

Compute Quadrature Weights Based on Dirichlet Tessellation

Generate a Default Pattern of Dummy Points

Intersection or Union of Two Windows

Distance for a Point Pattern Matching

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

Nearest neighbour distances

Murchison gold deposits

Print Brief Details of a Spatial Window

Diagnostic Plots for Fitted Point Process Model

Area of a Window

Hyper Data Frame

Estimate the J-function

Rotate a Window

Convert Data To Class psp

Fit cluster point process model

Plot a Function Array

Set Control Parameters for Metropolis-Hastings Algorithm.

Pair Correlation Function obtained from K Function

Mark Correlation Function

Fit the Matern Cluster Point Process by Minimum Contrast

Find Line Segment Nearest to Each Point

Centroid of a window

Geyer's Saturation Point Process Model

Diggle-Gratton model

pairwise.family

Pairwise Interaction Process Family

Contour plot of pixel image

Nearest Neighbour Distance Function G

Extract the Interaction from a Fitted Point Process Model

Reduced Second Moment Measure

nearest.raster.point

Find Pixel Nearest to a Given Point

Plot a tessellation

Interactively Define a Polygon

Morphological Opening of a Window

Fitted Conditional Intensity for Point Process Model

Diameter of a Window

inforder.family

Infinite Order Interaction Family

Simulate from a Fitted Point Process Model

Quadrat counting for a point pattern

Saturated Pairwise Interaction Point Process Family

Apply Affine Transformation

Marked K-Function

Interaction Distance of a Point Process

Define Point Process Model for Metropolis-Hastings Simulation.

multiplicity.ppp

Count Multiplicity of Duplicate Points

Convert Polygonal Region into Different Format

quadratresample

Resample a Point Pattern by Resampling Quadrats

Delaunay Triangulation of Point Pattern

Harkness-Isham ants' nests data

Test Whether An Object Is A Point Pattern

Create a Point Matching

Test Whether A Point Pattern is Marked

Summarizing a Pixel Image

Window in Shape of Letter R

Test Whether An Object Is A Fitted Point Process Model

Morphological Closing of a Window

Pairwise distances between line segments

Distance Between Two Point Patterns

Clark and Evans Aggregation Index

Compute Quadrature Weights Based on Grid Counts

Apply Vector Translation

Read Point Pattern From Data File

Convert Point Pattern to Another Unit of Length

Extract Dummy Points Used to Fit a Point Process Model

Simulate Matern Model I

Plot a List of Point Patterns

The Area Interaction Point Process Model

Mean, Median and Range of Pixel Values in an Image

Kernel Smoothing of Line Segment Pattern

Simulate Point Process Models using the Metropolis-Hastings Algorithm.

Simulate Matern Model II

Create a Pixel Image Object

Quadrature Scheme Based on Pixel Grid

Japanese Pines Point Pattern

Residuals for Fitted Point Process Model

Create a Line Segment Pattern

Aherne's hamster tumour data

Midpoints of Line Segment Pattern

Kaplan-Meier and Reduced Sample Estimator using Histograms

Nearest neighbour distances between line segments

Compute Images of Constructed Covariates

Q-Q Plot of Residuals from Fitted Point Process Model

Nearest neighbour

Inhomogeneous Multitype K Dot Function

Profile Maximum Pseudolikelihood

Random Perturbation of a Point Pattern

Randomly Shift a Line Segment Pattern

Level Set of a Pixel Image

Morishita Index Plot

The Multitype Strauss Point Process Model

as.data.frame.ppp

Coerce Point Pattern to a Data Frame

Lansing Woods Point Pattern

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

The Piecewise Constant Pairwise Interaction Point Process Model

Nearest-Neighbour Correlation of Marked Point Pattern

Apply Affine Transformation To Line Segment Pattern

Pair Correlation Function

Apply Gaussian Blur to a Pixel Image

plot a Spatial Quadrature Scheme

The Lennard-Jones Potential

Set Covariance of a Window

Convex Hull of Points

plot.hyperframe

Plot Entries in a Hyperframe

Beta Ganglion Cells in Cat Retina, Old Version

Convert Pixel Image to Matrix

Generic Ord Interaction model

Apply Affine Transformation To Point Pattern

Perfect Simulation of the Strauss Process

Distance to Boundary of Window

Class of Line Segment Patterns

Determine Duplicated Points in a Spatial Point Pattern

Simulate Baddeley-Silverman Cell Process

Convert dataset to another unit of length

Extract Original Data from a Fitted Point Process Model

Divide Region into Quadrats

Safely Convert Point Pattern Window to Binary Mask

Generate grid of parallel lines with random displacement

Simulate point patterns using the Metropolis-Hastings algorithm.

Reset Values in Subset of Image

Endpoints of Line Segment Pattern

Generate Multitype Poisson Point Pattern

model.matrix.ppm

Extract Design Matrix from Point Process Model

Neighbourhood density function

Fit a Log-Gaussian Cox Point Process by Minimum Contrast

Poisson Point Process Model

Create a Window

Simulate Stratified Random Point Pattern

Tropical rain forest trees

Bounding Box of a Window or Point Pattern

Perspective Plot of Pixel Image

Class of Fitted Point Process Models

Plot Function Valuesn

Distance Map of Window

Apply Function to Image Broken Down by Factor

Apply a Function to a Point Pattern Broken Down by Factor

Pairwise distances

Print Brief Details of an Image

Exponential Energy Marks

Ord Interaction Process Family

Marked Nearest Neighbour Distance Function

Extract Subset of Line Segment Pattern

Calculate four standard summary functions of a point pattern.

Evaluate Expression Involving Function Arrays

Lengths of Line Segments

Generate a Quadrature Scheme from a Point Pattern

Print a Quadrature Scheme

Histogram of Pixel Values in an Image

Distance to Boundary of Window

Orientation Angles of Line Segments

Apply Vector Translation To Point Pattern

Determine Initial State for Metropolis-Hastings Simulation.

Random Re-Labelling of Point Pattern

Print Progress Reports

Test Whether An Object Is A Window

Test whether Object is Multitype

Interpret Fitted Model for Metropolis-Hastings Simulation.

bounding.box.xy

Convex Hull of Points

plot a Spatial Line Segment Pattern

Fit Point Process Model to Data

Longleaf Pines Point Pattern

Pair Correlation Function of Point Pattern

Test Whether Marks Are Present

spatstat-deprecated

Deprecated spatstat functions

Nearest Neighbour in Another Point Pattern

Test Whether Points Are Inside A Window

Identify Points in a Point Pattern

Simulate Gauss-Poisson Process

Data and Code From JRSS Discussion Paper on Residuals

Summarise Marks in Every Neighbourhood in a Point Pattern

Tabulate Marks in Neighbourhood of Every Point in a Point Pattern

Hybrid Geyer Point Process Model

Simulate Matern Cluster Process

California Redwoods Point Pattern (Entire Dataset)

The Strauss Point Process Model

The Soft Core Point Process Model

plot a Fitted Point Process Model

Test Whether Two Pixel Images Are Compatible

selfcrossing.psp

Crossing Points in a Line Segment Pattern

Simulate a fitted cluster point process model.

Apply Vector Translation To Window

Multitype J Function (i-to-j)

Simulate Simple Sequential Inhibition

Simulate Thomas Process

Inhomogeneous K-function

Biological Cells Point Pattern

Compute Integral of Function Against Cumulative Distribution

Simulate systematic random point pattern

Spruces Point Pattern

Spokes pattern of dummy points

Cut margins from rectangle

Extract List of Tiles in a Tessellation

Apply Vector Translation To Line Segment Pattern

Generate N Uniform Random Points

The Strauss / Hard Core Point Process Model

Simulate Neyman-Scott Process

Summarizing a Fitted Point Process Model

compatible.fasp

Test Whether Two Function Arrays Are Compatible

Simulated Point Pattern

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

Pairwise distances between two different point patterns

Update a Fitted Point Process Model

Multitype L-function (i-to-any)

Summary of a Line Segment Pattern Dataset

spatstat-internal

Internal spatstat functions

Create a Point Pattern

Plot a fitted cluster point process

Estimate window from points alone

Plot a Spatial Window

Apply Vector Translation To Pixel Image

Combine Two Line Segment Patterns

Plot a Pixel Image

Fit the Thomas Point Process by Minimum Contrast

Convert Data To Class owin

Beta Ganglion Cells in Cat Retina

Summary of a List of Things

Generate N Random Multitype Points

Set or Reset the Marks in a Point Pattern

Berman-Huntington points and lines data

Extract or Replace Subset of Tessellation

Concatenate x,y Coordinate Vectors

Define Point Process Model for Metropolis-Hastings Simulation.

Superimpose Several Point Patterns

subset.splitppp

Extract or Replace Sub-Patterns

Pairwise distances

plot a Spatial Point Pattern

Name for Unit of Length

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

density.splitppp

Kernel Smoothed Intensity of Split Point Pattern

Extract Subset of Image

Divide Point Pattern into Sub-patterns

is.multitype.ppm

Test Whether A Point Process Model is Multitype

Sample Quantiles of Pixel Image

rmhmodel.default

Build Point Process Model for Metropolis-Hastings Simulation.

Extract Subset of Function Values

Humberside Data on Childhood Leukaemia and Lymphoma

Convert Window to Another Unit of Length

Print Brief Details of a Point Pattern Dataset

Generate N Random Points

Cartesian Coordinates for a Pixel Raster

Test Whether A Point Process Model is Marked

project2segment

Move Point To Nearest Line

Difference of Disc Areas

Kaplan-Meier Estimator using Histogram Data

Random Thinning

Convert Pixel Image to Another Unit of Length

Union of Data and Dummy Points

Crossing Points of Two Line Segment Patterns

rshift.splitppp

Randomly Shift a List of Point Patterns

Prediction from a Fitted Point Process Model

Ponderosa Pine Tree Point Pattern

New Zealand Trees Point Pattern

Determine Whether One Window is Contained In Another

pppmatching.object

Class of Point Matchings

Class of Point Patterns

Extract Quadrature Scheme Used to Fit a Point Process Model

Urkiola Woods Point Pattern

Convert Point Pattern to Pixel Image

Prediction from a Fitted Cluster Point Process Model

Evaluate an Expression in a Function Table

Generate Poisson Point Pattern

Generate N Uniform Random Points in a Disc

Inhomogeneous Cross K Function

Summary of a Point Pattern Dataset

Distance Map of Line Segment Pattern

Rotate a Line Segment Pattern

Extract or Replace Subset of Point Pattern

Plot a List of Things

Summary of a Spatial Window

Update a Fitted Cluster Point Process Model

Multitype L-function (cross-type)

Basis for Harmonic Functions

Subset of Quadrature Scheme

Point Patterns of New Brunswick Forest Fires

Divide Image Into Sub-images

Extract Subset of Function Array

summary.splitppp

Summary of a Split Point Pattern

Variance-Covariance Matrix for a Fitted Point Process Model

Convert Line Segment Pattern to Another Unit of Length

Estimate the I-function

Extract or Replace Subset of a List of Things

Randomly Shift a Point Pattern

Test Whether An Object Is A Pixel Image

Rotate a Point Pattern

Sufficient Statistic of Point Process Model

Generate Poisson Random Line Process

Reduced Sample Estimator using Histogram Data

Spatial smoothing of observations at irregular points

Create a Tessellation

Extract Unique Points from a Spatial Point Pattern

Swedish Pines Point Pattern

ANOVA for Fitted Point Process Models

Superimpose Several Line Segment Patterns

Corners of a rectangle

California Redwoods Point Pattern (Ripley's Subset)

Convert to Pixel Image

Vertices of a Window

spatstat.options

Internal Options in Spatstat Package