spatstat v1.19-3


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by Adrian Baddeley

Spatial Point Pattern analysis, model-fitting, simulation, tests

A package for analysing spatial data, mainly Spatial Point Patterns, including multitype/marked points and spatial covariates, in any two-dimensional spatial region. Also supports three-dimensional point patterns, and space-time point patterns in any number of dimensions. 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, pixel images and tessellations. 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).

Functions in spatstat

Name Description
Hest Spherical Contact Distribution Function
Extract.quad Subset of Quadrature Scheme
Strauss The Strauss Point Process Model
DiggleGratton Diggle-Gratton model
Iest Estimate the I-function
Fest Estimate the empty space function F Convert to Pixel Image
border Border Region of a Window
anova.ppm ANOVA for Fitted Point Process Models
bdist.tiles Distance to Boundary of Window
Gfox Foxall's Distance Functions
amacrine Hughes' Amacrine Cell Data Convert Pixel Image to Matrix
Emark Diagnostics for random marking
dirichlet.weights Compute Quadrature Weights Based on Dirichlet Tessellation
Lest L-function
Ldot.inhom Inhomogeneous Multitype L Dot Function
alltypes Calculate Summary Statistic for All Types in a Multitype Point Pattern
dirichlet Dirichlet Tessellation of Point Pattern
affine.ppp Apply Affine Transformation To Point Pattern
blur Apply Gaussian Blur to a Pixel Image
Jest Estimate the J-function
as.tess Convert Data To Tessellation
Extract.tess Extract or Replace Subset of Tessellation
as.hyperframe.ppx Extract coordinates and marks of multidimensional point pattern
Ldot Multitype L-function (i-to-any)
Saturated Saturated Pairwise Interaction model
Lcross.inhom Inhomogeneous Cross Type L Function
affine.psp Apply Affine Transformation To Line Segment Pattern
Extract.ppp Extract or Replace Subset of Point Pattern
adaptive.density Intensity Estimate of Point Pattern Using Tessellation
as.mask Pixel Image Approximation of a Window Apply Function to Image Broken Down by Factor
Poisson Poisson Point Process Model
chorley Chorley-Ribble Cancer Data
crossdist.ppx Pairwise Distances Between Two Different Multi-Dimensional Point Patterns
Extract.splitppp Extract or Replace Sub-Patterns
G3est Nearest Neighbour Distance Distribution Function of a Three-Dimensional Point Pattern
Ord Generic Ord Interaction model
Kdot.inhom Inhomogeneous Multitype K Dot Function
applynbd Apply Function to Every Neighbourhood in a Point Pattern
centroid.owin Centroid of a window
complement.owin Take Complement of a Window
dilated.areas Areas of Morphological Dilations
deltametric Delta Metric
data.ppm Extract Original Data from a Fitted Point Process Model
connected Connected components of an image or window
crossdist.default Pairwise distances between two different sets of points
Gmulti Marked Nearest Neighbour Distance Function Integral of a Pixel Image
discpartarea Area of Part of Disc
as.ppp Convert Data To Class ppp
levelset Level Set of a Pixel Image Bounding Box of a Window or Point Pattern
im.object Class of Images
spatstat-deprecated Deprecated spatstat functions
dummy.ppm Extract Dummy Points Used to Fit a Point Process Model
bei Tropical rain forest trees
im Create a Pixel Image Object
inside.owin Test Whether Points Are Inside A Window
eval.fasp Evaluate Expression Involving Function Arrays
coords Extract Coordinates of a Spatial or Spatiotemporal Point Pattern
closing Morphological Closing Test Whether An Object Is A Pixel Image Extract Subset of Image
Geyer Geyer's Saturation Point Process Model
intersect.tess Intersection of Two Tessellations
duplicated.ppp Determine Duplicated Points in a Spatial Point Pattern
area.owin Area of a Window
by.ppp Apply a Function to a Point Pattern Broken Down by Factor
copper Berman-Huntington points and lines data
delaunay Delaunay Triangulation of Point Pattern
hamster Aherne's hamster tumour data
as.polygonal Convert a Window to a Polygonal Window
logLik.ppm Log Likelihood for Poisson Point Process Model
diameter Diameter of an Object
erosion Morphological Erosion
fitin.ppm Extract the Interaction from a Fitted Point Process Model
fitted.ppm Fitted Conditional Intensity for Point Process Model
Gest Nearest Neighbour Distance Function G
Kinhom Inhomogeneous K-function
boxx Multi-Dimensional Box
OrdThresh Ord's Interaction model Convex Hull of Points
box3 Three-Dimensional Box
demopat Artificial Data Point Pattern
eem Exponential Energy Marks
bermantest Berman's Tests for Point Process Model
identify.ppp Identify Points in a Point Pattern
clip.infline Intersect Infinite Straight Lines with a Window
Jcross Multitype J Function (i-to-j)
compatible.fasp Test Whether Two Function Arrays Are Compatible
lgcp.estK Fit a Log-Gaussian Cox Point Process by Minimum Contrast Print News About Latest Version of Package Coerce Line Segment Pattern to a Data Frame
marks Marks of a Point Pattern
crossdist.pp3 Pairwise distances between two different three-dimensional point patterns
Kcross.inhom Inhomogeneous Cross K Function Interpolate a Pixel Image
is.subset.owin Determine Whether One Window is Contained In Another
MultiStraussHard The Multitype/Hard Core Strauss Point Process Model
bdist.points Distance to Boundary of Window
collapse.fv Collapse Several Function Tables into One
disc Circular Window
kstest.ppm Kolmogorov-Smirnov Test for Point Process Model
Extract.fasp Extract Subset of Function Array
distmap.ppp Distance Map of Point Pattern
effectfun Compute Fitted Effect of a Spatial Covariate in a Point Process Model
BadGey Hybrid Geyer Point Process Model Histogram of Pixel Values in an Image
iplot Point and Click Interface for Displaying a Point Pattern
gridcentres Rectangular grid of points
markstat Summarise Marks in Every Neighbourhood in a Point Pattern
bind.fv Combine Function Value Tables
lengths.psp Lengths of Line Segments
Softcore The Soft Core Point Process Model
Lcross Multitype L-function (cross-type)
areaLoss Difference of Disc Areas
markcorr Mark Correlation Function
istat Point and Click Interface for Exploratory Analysis of Point Pattern
Kmeasure Reduced Second Moment Measure Kaplan-Meier and Reduced Sample Estimator using Histograms
F3est Empty Space Function of a Three-Dimensional Point Pattern
Kdot Multitype K Function (i-to-any)
markvario Mark Variogram
K3est K-function of a Three-Dimensional Point Pattern
Extract.psp Extract Subset of Line Segment Pattern
clarkevans Clark and Evans Aggregation Index Convert Pixel Image from Numeric to Factor
MultiStrauss The Multitype Strauss Point Process Model
is.multitype Test whether Object is Multitype
AreaInter The Area Interaction Point Process Model
distmap Distance Map
Pairwise Generic Pairwise Interaction model
ants Harkness-Isham ants' nests data
Fiksel The Fiksel Interaction
Gdot Multitype Nearest Neighbour Distance Function (i-to-any) Coerce Point Pattern to a Data Frame
ewcdf Weighted Empirical Cumulative Distribution Function
Jdot Multitype J Function (i-to-any)
PairPiece The Piecewise Constant Pairwise Interaction Point Process Model
harmonic Basis for Harmonic Functions
Linhom L-function
as.owin Convert Data To Class owin
Kcross Multitype K Function (Cross-type)
finpines Pine saplings in Finland.
clickpoly Interactively Define a Polygon
distfun Distance Map as a Function
crossdist.ppp Pairwise distances between two different point patterns
affine.owin Apply Affine Transformation To Window
letterR Window in Shape of Letter R Coerce Hyperframe to Data Frame
Hardcore The Hard Core Point Process Model
StraussHard The Strauss / Hard Core Point Process Model
Extract.listof Extract or Replace Subset of a List of Things
as.psp Convert Data To Class psp
Kest K-function
colourmap Colour Lookup Tables
bdist.pixels Distance to Boundary of Window
LennardJones The Lennard-Jones Potential
endpoints.psp Endpoints of Line Segment Pattern
crossdist.psp Pairwise distances between two different line segment patterns
is.multitype.ppp Test Whether A Point Pattern is Multitype
is.ppm Test Whether An Object Is A Fitted Point Process Model
heather Diggle's Heather Data
as.rectangle Window Frame
hyperframe Hyper Data Frame
expand.owin Expand Window By Factor
clickppp Interactively Add Points
lut Lookup Tables
incircle Find Largest Circle Inside Window
Gcross Multitype Nearest Neighbour Distance Function (i-to-j)
angles.psp Orientation Angles of Line Segments
bramblecanes Hutchings' Bramble Canes data Reset Values in Subset of Image
diagnose.ppm Diagnostic Plots for Fitted Point Process Model
diameter.owin Diameter of a Window
concatxy Concatenate x,y Coordinate Vectors
Jmulti Marked J Function
gridweights Compute Quadrature Weights Based on Grid Counts
append.psp Combine Two Line Segment Patterns
as.box3 Convert Data to Three-Dimensional Box Infinite Order Interaction Family
convexhull.xy Convex Hull of Points
bronzefilter Bronze gradient filter data
chop.tess Subdivide a Window or Tessellation using a Set of Lines
allstats Calculate four standard summary functions of a point pattern.
distmap.owin Distance Map of Window
is.marked Test Whether Marks Are Present
anemones Beadlet Anemones Data
distmap.psp Distance Map of Line Segment Pattern
localK Neighbourhood density function
corners Corners of a rectangle
Kest.fft K-function using FFT
density.ppp Kernel Smoothed Intensity of Point Pattern
cells Biological Cells Point Pattern
default.dummy Generate a Default Pattern of Dummy Points
diameter.boxx Geometrical Calculations for Multi-Dimensional Box
markconnect Mark Connection Function
as.mask.psp Convert Line Segment Pattern to Binary Pixel Mask
envelope Simulation Envelopes of Summary Function
density.splitppp Kernel Smoothed Intensity of Split Point Pattern
eroded.areas Areas of Morphological Erosions
affine Apply Affine Transformation
convexhull Convex Hull
envelope.pp3 Simulation Envelopes of Summary Function for 3D Point Pattern
dilation Morphological Dilation Contour plot of pixel image
crossdist Pairwise distances
diameter.box3 Geometrical Calculations for Three-Dimensional Box
crossing.psp Crossing Points of Two Line Segment Patterns
gpc2owin Convert Polygonal Region into Different Format Evaluate Expression Involving Pixel Images
fryplot Fry Plot of Point Pattern
is.marked.ppp Test Whether A Point Pattern is Marked
fv Create a Function Value Table
colourtools Convert and Compare Colours in Different Formats
kppm Fit cluster point process model
ganglia Beta Ganglion Cells in Cat Retina, Old Version
eval.fv Evaluate Expression Involving Functions
infline Infinite Straight Lines
is.empty Test Whether An Object Is Empty
marktable Tabulate Marks in Neighbourhood of Every Point in a Point Pattern
is.convex Test Whether a Window is Convex
is.ppp Test Whether An Object Is A Point Pattern
is.multitype.ppm Test Whether A Point Process Model is Multitype
is.marked.ppm Test Whether A Point Process Model is Marked
longleaf Longleaf Pines Point Pattern
spatstat-internal Internal spatstat functions
betacells Beta Ganglion Cells in Cat Retina
Extract.fv Extract Subset of Function Values
Kmulti Marked K-Function
cbind.hyperframe Combine Hyperframes by Rows or by Columns
compatible.fv Test Whether Two Function Objects Are Compatible
humberside Humberside Data on Childhood Leukaemia and Lymphoma Convert Pixel Image to Data Frame Test Whether Two Pixel Images Are Compatible
pcf Pair Correlation Function
intersect.owin Intersection, Union or Set Subtraction of Two Windows
nnwhich Nearest neighbour
pp3 Three Dimensional Point Pattern
discretise Safely Convert Point Pattern Window to Binary Mask
midpoints.psp Midpoints of Line Segment Pattern
SatPiece Piecewise Constant Saturated Pairwise Interaction Point Process Model
markcorrint Mark Correlation Integral
pixellate Convert Spatial Object to Pixel Image
ppm.object Class of Fitted Point Process Models Ord Interaction Process Family
quad.object Class of Quadrature Schemes
is.owin Test Whether An Object Is A Window
plot.tess Plot a tessellation
pcfdot.inhom Inhomogeneous Multitype Pair Correlation Function (Type-i-To-Any-Type)
as.hyperframe Convert Data to Hyperframe
print.psp Print Brief Details of a Line Segment Pattern Dataset
pppmatching.object Class of Point Matchings
plot.bermantest Plot Result of Berman Test
coef.ppm Coefficients of Fitted Point Process Model
rcell Simulate Baddeley-Silverman Cell Process
pairdist.ppx Pairwise Distances in Any Dimensions
rGaussPoisson Simulate Gauss-Poisson Process
cut.ppp Classify Points in a Point Pattern
rNeymanScott Simulate Neyman-Scott Process
reduced.sample Reduced Sample Estimator using Histogram Data
miplot Morishita Index Plot
rpoint Generate N Random Points
print.owin Print Brief Details of a Spatial Window
areaGain Difference of Disc Areas
plot.splitppp Plot a List of Point Patterns
plot.envelope Plot a Simulation Envelope
plot.plotppm Plot a plotppm Object Created by plot.ppm
nndist.ppx Nearest Neighbour Distances in Any Dimensions
plot.fasp Plot a Function Array
rotate.psp Rotate a Line Segment Pattern
nnwhich.ppx Nearest Neighbours in Any Dimensions
pairdist Pairwise distances
pcfdot Multitype pair correlation function (i-to-any)
pcfcross.inhom Inhomogeneous Multitype Pair Correlation Function (Cross-Type)
print.ppp Print Brief Details of a Point Pattern Dataset
pairdist.default Pairwise distances
model.images Compute Images of Constructed Covariates
nncross Nearest Neighbours Between Two Patterns
pixellate.psp Convert Line Segment Pattern to Pixel Image
nnclean Nearest Neighbour Clutter Removal
psp Create a Line Segment Pattern
ppp.object Class of Point Patterns
density.psp Kernel Smoothing of Line Segment Pattern
pixellate.ppp Convert Point Pattern to Pixel Image
quadscheme Generate a Quadrature Scheme from a Point Pattern
plot.ppm plot a Fitted Point Process Model Sample Quantiles of Pixel Image
methods.ppx Methods for Multidimensional Space-Time Point Patterns
plot.hyperframe Plot Entries in a Hyperframe
owin.object Class owin
rMatClust Simulate Matern Cluster Process
quadrats Divide Region into Quadrats
nearestsegment Find Line Segment Nearest to Each Point
volume Volume of an Object
nndist.psp Nearest neighbour distances between line segments
ppp Create a Point Pattern
matclust.estK Fit the Matern Cluster Point Process by Minimum Contrast
print.quad Print a Quadrature Scheme
plot.pp3 Plot a three-dimensional point pattern
rjitter Random Perturbation of a Point Pattern
split.ppp Divide Point Pattern into Sub-patterns
plot.listof Plot a List of Things
pcfcross Multitype pair correlation function (cross-type)
pcfinhom Inhomogeneous Pair Correlation Function
osteo Osteocyte Lacunae Data: Replicated Three-Dimensional Point Patterns
methods.box3 Methods for Three-Dimensional Box
rMaternII Simulate Matern Model II
summary.splitppp Summary of a Split Point Pattern
quadratresample Resample a Point Pattern by Resampling Quadrats
shift.owin Apply Vector Translation To Window
rshift.ppp Randomly Shift a Point Pattern
rSSI Simulate Simple Sequential Inhibition
psp.object Class of Line Segment Patterns
progressreport Print Progress Reports
print.ppm Print a Fitted Point Process Model
rlabel Random Re-Labelling of Point Pattern
solutionset Evaluate Logical Expression Involving Pixel Images and Return Region Where Expression is True
murchison Murchison gold deposits
plot.kstest Plot a Spatial Kolmogorov-Smirnov Test
npoints Number of Points in a Point Pattern
ppx Multidimensional Space-Time Point Pattern
plot.psp plot a Spatial Line Segment Pattern
pixelquad Quadrature Scheme Based on Pixel Grid
model.frame.ppm Extract the Environment of a Point Process Model
pcf.ppp Pair Correlation Function of Point Pattern
predict.kppm Prediction from a Fitted Cluster Point Process Model Pairwise Interaction Process Family
rotate.owin Rotate a Window
quad.ppm Extract Quadrature Scheme Used to Fit a Point Process Model
vcov.ppm Variance-Covariance Matrix for a Fitted Point Process Model
rmhmodel Define Point Process Model for Metropolis-Hastings Simulation. Summarizing a Pixel Image
rmh.ppm Simulate from a Fitted Point Process Model
runifpointx Generate N Uniform Random Points in Any Dimensions
rescale.owin Convert Window to Another Unit of Length
plot.kppm Plot a fitted cluster point process
rpoisppOnLines Generate Poisson Point Pattern on Line Segments
opening Morphological Opening
rMaternI Simulate Matern Model I
pairdist.ppp Pairwise distances Saturated Pairwise Interaction Point Process Family
plot.quad plot a Spatial Quadrature Scheme
plot.ppp plot a Spatial Point Pattern
kaplan.meier Kaplan-Meier Estimator using Histogram Data
thomas.estK Fit the Thomas Point Process by Minimum Contrast
rescale Convert dataset to another unit of length
rotate.ppp Rotate a Point Pattern
fasp.object Function Arrays for Spatial Patterns
rpoisppx Generate Poisson Point Pattern in Any Dimensions
update.ppm Update a Fitted Point Process Model Convert Pixel Image to Another Unit of Length Apply Vector Translation To Pixel Image
pppmatching Create a Point Matching
rlinegrid Generate grid of parallel lines with random displacement
pixellate.owin Convert Window to Pixel Image
runifpointOnLines Generate N Uniform Random Points On Line Segments
pcf.fv Pair Correlation Function obtained from K Function
rMosaicSet Mosaic Random Set
qqplot.ppm Q-Q Plot of Residuals from Fitted Point Process Model Plot a Pixel Image
summary.psp Summary of a Line Segment Pattern Dataset
ppm Fit Point Process Model to Data
rpoispp3 Generate Poisson Point Pattern in Three Dimensions
nnwhich.pp3 Nearest neighbours in three dimensions
plot.owin Plot a Spatial Window
summary.listof Summary of a List of Things
quadrat.test Chi-Squared Dispersion Test for Spatial Point Pattern Based on Quadrat Counts
pppdist Distance Between Two Point Patterns
simulate.kppm Simulate a Fitted Cluster Point Process Model
matchingdist Distance for a Point Pattern Matching
methods.boxx Methods for Multi-Dimensional Box
plot.fv Plot Function Values
periodify Make Periodic Copies of a Spatial Pattern
trim.rectangle Cut margins from rectangle
smooth.ppp Spatial smoothing of observations at irregular points
rmhmodel.default Build Point Process Model for Metropolis-Hastings Simulation. Scatterplot Matrix for Pixel Images
nndist.pp3 Nearest neighbour distances in three dimensions
quadrat.test.splitppp Chi-Squared Test of CSR for Split Point Pattern
setcov Set Covariance of a Window
rsyst Simulate systematic random point pattern
rstrat Simulate Stratified Random Point Pattern
japanesepines Japanese Pines Point Pattern
scanpp Read Point Pattern From Data File
model.matrix.ppm Extract Design Matrix from Point Process Model
rmpoispp Generate Multitype Poisson Point Pattern
tiles Extract List of Tiles in a Tessellation
nearest.raster.point Find Pixel Nearest to a Given Point
square Square Window
nztrees New Zealand Trees Point Pattern
fv.object Data Frames of Function Values
reach Interaction Distance of a Point Process
simulate.ppm Simulate a Fitted Gibbs Point Process Model
spruces Spruces Point Pattern
unmark Remove Marks
smooth.fv Apply Smoothing to Function Values
rshift.splitppp Randomly Shift a List of Point Patterns
quadratcount Quadrat counting for a point pattern
rmh Simulate point patterns using the Metropolis-Hastings algorithm.
mincontrast Method of Minimum Contrast
stieltjes Compute Integral of Function Against Cumulative Distribution
rknn Theoretical Distribution of Nearest Neighbour Distance
methods.pp3 Methods for three-dimensional point patterns
rpoislinetess Poisson Line Tessellation
redwoodfull California Redwoods Point Pattern (Entire Dataset)
rshift.psp Randomly Shift a Line Segment Pattern
pointsOnLines Place Points Evenly Along Specified Lines
rescale.psp Convert Line Segment Pattern to Another Unit of Length
rStrauss Perfect Simulation of the Strauss Process Perspective Plot of Pixel Image
summary.ppm Summarizing a Fitted Point Process Model
profilepl Profile Maximum Pseudolikelihood
rshift Random Shift
vertices Vertices of a Window
rmhmodel.ppm Interpret Fitted Model for Metropolis-Hastings Simulation.
rThomas Simulate Thomas Process
ponderosa Ponderosa Pine Tree Point Pattern
spatstat-package The Spatstat Package
predict.ppm Prediction from a Fitted Point Process Model
update.kppm Update a Fitted Cluster Point Process Model
summary.ppp Summary of a Point Pattern Dataset
unitname Name for Unit of Length
superimpose Superimpose Several Point Patterns
rmhstart Determine Initial State for Metropolis-Hastings Simulation.
rmh.default Simulate Point Process Models using the Metropolis-Hastings Algorithm.
ripras Estimate window from points alone
residuals.ppm Residuals for Fitted Point Process Model
owin Create a Window
rotate Rotate Maximum, Minimum, Mean, Median, Range or Sum of Pixel Values in an Image
plot.colourmap Plot a Colour Map
suffstat Sufficient Statistic of Point Process Model
rmhmodel.list Define Point Process Model for Metropolis-Hastings Simulation.
rpoisline Generate Poisson Random Line Process
simplify.owin Approximate a Polygon by a Simpler Polygon Print Brief Details of an Image
selfcrossing.psp Crossing Points in a Line Segment Pattern
redwood California Redwoods Point Pattern (Ripley's Subset)
superimposePSP Superimpose Several Line Segment Patterns
project2segment Move Point To Nearest Line
rMosaicField Mosaic Random Field
simdat Simulated Point Pattern
rmpoint Generate N Random Multitype Points
unique.ppp Extract Unique Points from a Spatial Point Pattern
spokes Spokes pattern of dummy points
nncorr Nearest-Neighbour Correlation Indices of Marked Point Pattern
summary.quad Summarizing a Quadrature Scheme
urkiola Urkiola Woods Point Pattern
nbfires Point Patterns of New Brunswick Forest Fires
nndist Nearest neighbour distances
pcf.fasp Pair Correlation Function obtained from array of K functions
pairdist.pp3 Pairwise distances in Three Dimensions
rescue.rectangle Convert Window Back To Rectangle
shift.ppp Apply Vector Translation To Point Pattern Divide Image Into Sub-images
with.hyperframe Evaluate an Expression in Each Row of a Hyperframe
runifpoint3 Generate N Uniform Random Points in Three Dimensions
lansing Lansing Woods Point Pattern
runifpoint Generate N Uniform Random Points
rmhcontrol Set Control Parameters for Metropolis-Hastings Algorithm.
shift Apply Vector Translation
perimeter Perimeter Length of Window
multiplicity.ppp Count Multiplicity of Duplicate Points
rthin Random Thinning
runifdisc Generate N Uniform Random Points in a Disc
spatstat.options Internal Options in Spatstat Package
rpoispp Generate Poisson Point Pattern
residualspaper Data and Code From JRSS Discussion Paper on Residuals
rescale.ppp Convert Point Pattern to Another Unit of Length
lurking Lurking variable plot
pairdist.psp Pairwise distances between line segments
swedishpines Swedish Pines Point Pattern
with.fv Evaluate an Expression in a Function Table
shapley Galaxies in the Shapley Supercluster
union.quad Union of Data and Dummy Points
whist Weighted Histogram
shift.psp Apply Vector Translation To Line Segment Pattern
raster.x Cartesian Coordinates for a Pixel Raster
tess Create a Tessellation
summary.owin Summary of a Spatial Window
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Last month downloads


Date 2010-06-16
License GPL (>= 2)
Packaged 2010-06-16 07:59:16 UTC; adrian
Repository CRAN
Date/Publication 2010-06-17 09:16:22

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