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spatstat (version 1.14-7)

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

17,668

Version

1.14-7

License

GPL (>= 2)

Maintainer

Adrian Baddeley

Last Published

March 22nd, 2025

Functions in spatstat (1.14-7)

Diggle-Gratton model

Marked J Function

Extract Subset of Line Segment Pattern

The Area Interaction Point Process Model

The Multitype Strauss Point Process Model

Sufficient Statistic of Point Process Model

Summary of a List of Things

Summarizing a Fitted Point Process Model

K-function using FFT

Convert Data To Class owin

Summary of a Point Pattern Dataset

Extract Unique Points from a Spatial Point Pattern

Summarizing a Quadrature Scheme

Extract List of Tiles in a Tessellation

Diameter of a Window

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

as.data.frame.ppp

Coerce Point Pattern to a Data Frame

Evaluate an Expression in a Function Table

summary.splitppp

Summary of a Split Point Pattern

Superimpose Several Line Segment Patterns

Summary of a Line Segment Pattern Dataset

Superimpose Several Point Patterns

Extract or Replace Subset of Tessellation

Update a Fitted Cluster Point Process Model

Cut margins from rectangle

inforder.family

Infinite Order Interaction Family

Create a Tessellation

The Strauss / Hard Core Point Process Model

Variance-Covariance Matrix for a Fitted Point Process Model

Mark Correlation Function

Summary of a Spatial Window

Simulate point patterns using the Metropolis-Hastings algorithm.

Union of Data and Dummy Points

Simulate Stratified Random Point Pattern

Perspective Plot of Pixel Image

Summarizing a Pixel Image

Simulate Point Process Models using the Metropolis-Hastings Algorithm.

Update a Fitted Point Process Model

Kolmogorov-Smirnov Test for Point Process Model

Urkiola Woods Point Pattern

Areas of Morphological Erosions

Pine saplings in Finland.

Endpoints of Line Segment Pattern

Inhomogeneous Multitype K Dot Function

Marked Nearest Neighbour Distance Function

Multitype J Function (i-to-j)

The Lennard-Jones Potential

Distance to Boundary of Window

Reset Values in Subset of Image

Circular Window

project2segment

Move Point To Nearest Line

spatstat-deprecated

Deprecated spatstat functions

Quadrat counting for a point pattern

The Soft Core Point Process Model

Simulate a fitted cluster point process model.

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

Extract Dummy Points Used to Fit a Point Process Model

Inhomogeneous K-function

Pixel Image Approximation of a Window

Hutchings' Bramble Canes data

Mean, Median and Range of Pixel Values in an Image

nearest.raster.point

Find Pixel Nearest to a Given Point

Multitype J Function (i-to-any)

Data Frames of Function Values

Hyper Data Frame

Evaluate Expression Involving Pixel Images

Kaplan-Meier and Reduced Sample Estimator using Histograms

Hybrid Geyer Point Process Model

Interactively Define a Polygon

Set Control Parameters for Metropolis-Hastings Algorithm.

Nearest Neighbour in Another Point Pattern

Random Perturbation of a Point Pattern

Multitype L-function (cross-type)

Convert Line Segment Pattern to Another Unit of Length

Corners of a rectangle

Ponderosa Pine Tree Point Pattern

Generic Pairwise Interaction model

Convert Data To Class psp

Estimate the I-function

adaptive.density

Intensity Estimate of Point Pattern Using Tessellation

Convert to Pixel Image

Test Whether Two Function Objects Are Compatible

Apply Affine Transformation To Point Pattern

Find Line Segment Nearest to Each Point

Distance to Boundary of Window

Marked K-Function

Class of Quadrature Schemes

Apply Function to Every Neighbourhood in a Point Pattern

Hughes' Amacrine Cell Data

The Strauss Point Process Model

Convert Data To Tessellation

Harkness-Isham ants' nests data

Pairwise distances

Ord Interaction Process Family

Sample Quantiles of Pixel Image

Distance Map of Line Segment Pattern

Intersection of Two Tessellations

Distance Between Two Point Patterns

Identify Points in a Point Pattern

Japanese Pines Point Pattern

Pairwise distances between line segments

Fit a Log-Gaussian Cox Point Process by Minimum Contrast

Kernel Smoothing of Line Segment Pattern

Plot a tessellation

Generate Poisson Point Pattern

Class of Line Segment Patterns

Plot Function Valuesn

Crossing Points of Two Line Segment Patterns

Pair Correlation Function obtained from K Function

Convert Polygonal Region into Different Format

Convex Hull of Points

Profile Maximum Pseudolikelihood

Pair Correlation Function of Point Pattern

Class of Point Patterns

Class of Images

ANOVA for Fitted Point Process Models

Artificial Data Point Pattern

Diagnostic Plots for Fitted Point Process Model

Apply Affine Transformation To Window

Create a Line Segment Pattern

Simulation envelopes of summary function

Centroid of a window

Kernel Smoothed Intensity of Point Pattern

Test Whether Two Pixel Images Are Compatible

Test Whether A Point Pattern is Marked

Ord's Interaction model

Evaluate an Expression in Each Row of a Hyperframe

Pairwise distances between two different point patterns

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

Reduced Second Moment Measure

subset.splitppp

Extract or Replace Sub-Patterns

dirichlet.weights

Compute Quadrature Weights Based on Dirichlet Tessellation

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

Convert Data To Class ppp

Determine Whether One Window is Contained In Another

Murchison gold deposits

Simulate Neyman-Scott Process

rmhmodel.default

Build Point Process Model for Metropolis-Hastings Simulation.

Print Brief Details of a Line Segment Pattern Dataset

Apply Vector Translation To Pixel Image

Generate N Uniform Random Points

Evaluate Expression Involving Functions

Morphological Opening of a Window

Intersection or Union of Two Windows

Apply Vector Translation To Window

Pairwise distances

density.splitppp

Kernel Smoothed Intensity of Split Point Pattern

Fit cluster point process model

Classify Points in a Point Pattern

Generic Ord Interaction model

Tropical rain forest trees

Bounding Box of a Window or Point Pattern

Fit the Thomas Point Process by Minimum Contrast

Test Whether An Object Is A Point Pattern

Difference of Disc Areas

Apply Affine Transformation To Line Segment Pattern

Delaunay Triangulation of Point Pattern

Extract Subset of Function Values

Data and Code From JRSS Discussion Paper on Residuals

as.data.frame.psp

Coerce Line Segment Pattern to a Data Frame

Pair Correlation Function obtained from array of K functions

Cartesian Coordinates for a Pixel Raster

plot a Spatial Line Segment Pattern

Convert Pixel Image from Numeric to Factor

Beta Ganglion Cells in Cat Retina

Nearest-Neighbour Correlation of Marked Point Pattern

Spruces Point Pattern

Lansing Woods Point Pattern

Divide Region into Quadrats

Interpolate a Pixel Image

Multitype pair correlation function

Chorley-Ribble Cancer Data

Fit Point Process Model to Data

Swedish Pines Point Pattern

selfcrossing.psp

Crossing Points in a Line Segment Pattern

Distance for a Point Pattern Matching

Apply Affine Transformation

bounding.box.xy

Convex Hull of Points

Perfect Simulation of the Strauss Process

Name for Unit of Length

Extract Subset of Image

Nearest Neighbour Distance Function G

Interactively Add Points

Pairwise distances

Convert dataset to another unit of length

Berman-Huntington points and lines data

Extract or Replace Subset of a List of Things

Safely Convert Point Pattern Window to Binary Mask

Lurking variable plot

Rotate a Point Pattern

Reduced Sample Estimator using Histogram Data

Apply Vector Translation To Line Segment Pattern

spatstat-internal

Internal spatstat functions

New Zealand Trees Point Pattern

quadratresample

Resample a Point Pattern by Resampling Quadrats

Class of Fitted Point Process Models

Calculate four standard summary functions of a point pattern.

Subset of Quadrature Scheme

Generate N Random Multitype Points

Point Patterns of New Brunswick Forest Fires

The Piecewise Constant Pairwise Interaction Point Process Model

Concatenate x,y Coordinate Vectors

Orientation Angles of Line Segments

Generate Multitype Poisson Point Pattern

Determine Duplicated Points in a Spatial Point Pattern

compatible.fasp

Test Whether Two Function Arrays Are Compatible

Plot a plotppm Object Created by plot.ppm

Set Covariance of a Window

spatstat.options

Internal Options in Spatstat Package

Method of Minimum Contrast

Combine Two Line Segment Patterns

Saturated Pairwise Interaction Point Process Family

Generate N Random Points

The Spatstat Package

plot a Spatial Quadrature Scheme

Coefficients of Fitted Point Process Model

Generate a Quadrature Scheme from a Point Pattern

Tabulate Marks in Neighbourhood of Every Point in a Point Pattern

MultiStraussHard

The Multitype/Hard Core Strauss Point Process Model

Multitype K Function (i-to-any)

Piecewise Constant Saturated Pairwise Interaction Point Process Model

Determine Initial State for Metropolis-Hastings Simulation.

rshift.splitppp

Randomly Shift a List of Point Patterns

Define Point Process Model for Metropolis-Hastings Simulation.

Simulate Baddeley-Silverman Cell Process

Estimate the J-function

Convert Pixel Image to Matrix

Inhomogeneous Cross K Function

Neighbourhood density function

Test Whether An Object Is A Window

Expand Window By Factor

plot a Fitted Point Process Model

Longleaf Pines Point Pattern

Plot a fitted cluster point process

Divide Image Into Sub-images

Biological Cells Point Pattern

Print Brief Details of an Image

Print Brief Details of a Point Pattern Dataset

Extract Original Data from a Fitted Point Process Model

Morphological Closing of a Window

Set or Reset the Marks in a Point Pattern

Distance Map of Window

Compute Images of Constructed Covariates

Multitype L-function (i-to-any)

Test Whether Marks Are Present

Apply a Function to a Point Pattern Broken Down by Factor

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

California Redwoods Point Pattern (Entire Dataset)

Poisson Point Process Model

Prediction from a Fitted Cluster Point Process Model

crossdist.default

Pairwise distances between two different sets of points

Rotate a Window

Evaluate Expression Involving Function Arrays

Pairwise distances between two different line segment patterns

Apply Function to Image Broken Down by Factor

Plot a Pixel Image

Contour plot of pixel image

Apply Gaussian Blur to a Pixel Image

Exponential Energy Marks

Test Whether Points Are Inside A Window

Test Whether An Object Is A Pixel Image

Log Likelihood for Poisson Point Process Model

plot a Spatial Point Pattern

Generate grid of parallel lines with random displacement

Simulate Matern Model II

Generate Poisson Random Line Process

Histogram of Pixel Values in an Image

Prediction from a Fitted Point Process Model

Area of a Window

Generate a Default Pattern of Dummy Points

Test Whether An Object Is A Fitted Point Process Model

Pair Correlation Function

pairwise.family

Pairwise Interaction Process Family

Humberside Data on Childhood Leukaemia and Lymphoma

Nearest neighbour distances

Saturated Pairwise Interaction model

Create a Point Pattern

Define Point Process Model for Metropolis-Hastings Simulation.

Lengths of Line Segments

Kaplan-Meier Estimator using Histogram Data

Print a Fitted Point Process Model

Simulate Matern Cluster Process

is.multitype.ppp

Test Whether A Point Pattern is Multitype

Window in Shape of Letter R

Convert Window to Another Unit of Length

Dirichlet Tessellation of Point Pattern

Random Re-Labelling of Point Pattern

Extract Quadrature Scheme Used to Fit a Point Process Model

Basis for Harmonic Functions

Fitted Conditional Intensity for Point Process Model

Simulate Gauss-Poisson Process

Midpoints of Line Segment Pattern

Apply Vector Translation To Point Pattern

Plot a Function Array

Read Point Pattern From Data File

Apply Vector Translation

Extract or Replace Subset of Point Pattern

Simulate Thomas Process

Weighted Empirical Cumulative Distribution Function

Simulate from a Fitted Point Process Model

Nearest neighbour distances between line segments

Print a Quadrature Scheme

pppmatching.object

Class of Point Matchings

Convert Point Pattern to Another Unit of Length

Plot a List of Things

Simulate Simple Sequential Inhibition

Simulate Matern Model I

Convert Pixel Image to Another Unit of Length

plot.hyperframe

Plot Entries in a Hyperframe

Create a Point Matching

Beta Ganglion Cells in Cat Retina, Old Version

Print Brief Details of a Spatial Window

Simulate systematic random point pattern

Residuals for Fitted Point Process Model

Divide Point Pattern into Sub-patterns

Compute Integral of Function Against Cumulative Distribution

Rectangular grid of points

Spokes pattern of dummy points

Estimate the empty space function F

Simulated Point Pattern

Random Thinning

Geyer's Saturation Point Process Model

rescue.rectangle

Convert Window Back To Rectangle

Interpret Fitted Model for Metropolis-Hastings Simulation.

Beadlet Anemones Data

Level Set of a Pixel Image

Multitype K Function (Cross-type)

Calculate Summary Statistic for All Types in a Multitype Point Pattern

pairdist.default

Pairwise distances

Extract Subset of Function Array

Find Largest Circle Inside Window

complement.owin

Take Complement of a Window

Aherne's hamster tumour data

Nearest neighbour

Quadrature Scheme Based on Pixel Grid

Clark and Evans Aggregation Index

is.multitype.ppm

Test Whether A Point Process Model is Multitype

Dilate a Window

Test whether Object is Multitype

Distance Map of Point Pattern

Fit the Matern Cluster Point Process by Minimum Contrast

Create a Pixel Image Object

Summarise Marks in Every Neighbourhood in a Point Pattern

Interaction Distance of a Point Process

Function Arrays for Spatial Patterns

Test Whether A Point Process Model is Marked

Plot a List of Point Patterns

Create a Window

Randomly Shift a Line Segment Pattern

Plot a Spatial Window

Generate N Uniform Random Points in a Disc

model.matrix.ppm

Extract Design Matrix from Point Process Model

multiplicity.ppp

Count Multiplicity of Duplicate Points

Randomly Shift a Point Pattern

Rotate a Line Segment Pattern

Q-Q Plot of Residuals from Fitted Point Process Model

Estimate window from points alone

Print Progress Reports

Extract the Interaction from a Fitted Point Process Model

Compute Quadrature Weights Based on Grid Counts

California Redwoods Point Pattern (Ripley's Subset)

Spatial smoothing of observations at irregular points

Vertices of a Window