Tools for spatial data

Documentation for package ‘fields’ version 6.01

Help Pages

A B C D E F G H I K L M O P Q R S T U V W X Y

-- --

%d*%	Basic linear algebra utilities and other computations supporting the Krig function.
%d*%,matrix,matrix-method	Multiplying diagonal matrices in Package 'fields'
%d*%,matrix,numeric-method	Multiplying diagonal matrices in Package 'fields'
%d*%,numeric,matrix-method	Multiplying diagonal matrices in Package 'fields'
%d*%,numeric,numeric-method	Multiplying diagonal matrices in Package 'fields'
%d*%-methods	Multiplying diagonal matrices in Package 'fields'

-- A --

add.image	Adds an image to an existing plot.
arrow.plot	Adds arrows to a plot
as.image	Creates image from irregular x,y,z
as.surface	Creates an "surface" object from grid values.
average.image	Some simple functions for subsetting images

-- B --

BD	Data frame of the effect of buffer compositions on DNA strand displacement amplification. A 4-d regression data set with with replication. This is a useful test data set for exercising function fitting methods.
bplot	boxplot
bplot.xy	Boxplots for conditional distribution

-- C --

CO.elev	Monthly surface meterology for Colorado 1895-1997
CO.id	Monthly surface meterology for Colorado 1895-1997
CO.loc	Monthly surface meterology for Colorado 1895-1997
CO.names	Monthly surface meterology for Colorado 1895-1997
CO.ppt	Monthly surface meterology for Colorado 1895-1997
CO.ppt.MAM	Monthly surface meterology for Colorado 1895-1997
CO.ppt.MAM.climate	Monthly surface meterology for Colorado 1895-1997
CO.tmax	Monthly surface meterology for Colorado 1895-1997
CO.tmax.MAM	Monthly surface meterology for Colorado 1895-1997
CO.tmax.MAM.climate	Monthly surface meterology for Colorado 1895-1997
CO.tmean.MAM.climate	Monthly surface meterology for Colorado 1895-1997
CO.tmin	Monthly surface meterology for Colorado 1895-1997
CO.tmin.MAM	Monthly surface meterology for Colorado 1895-1997
CO.tmin.MAM.climate	Monthly surface meterology for Colorado 1895-1997
CO.years	Monthly surface meterology for Colorado 1895-1997
CO2	Simulated global CO2 observations
coef.Krig	Kriging surface estimate
colorbar.plot	Adds color scale strips to an existing plot.
COmonthlyMet	Monthly surface meterology for Colorado 1895-1997
cover.design	Computes Space-Filling "Coverage" designs using Swapping Algorithm
crop.image	Some simple functions for subsetting images
cubic.cov	Exponential family, radial basis functions,cubic spline, compactly supported Wendland family and stationary covariances.

-- D --

designer.colors	Some useful color tables for images.
discretize.image	Some simple functions for working with gridded data and the grid format (grid.list) used in fields.
drape.color	Perspective plot draped with colors in the facets.
drape.plot	Perspective plot draped with colors in the facets.

-- E --

Exp.cov	Exponential family, radial basis functions,cubic spline, compactly supported Wendland family and stationary covariances.
Exp.image.cov	Exponential, Matern and general covariance functions for 2-d gridded locations.
Exp.simple.cov	Exponential family, radial basis functions,cubic spline, compactly supported Wendland family and stationary covariances.
Exponential	Covariance functions

-- F --

fastTps	Thin plate spline regression
fields	fields - tools for spatial data
fields.color.picker	fields - graphics hints
fields.convert.grid	Some simple functions for working with gridded data and the grid format (grid.list) used in fields.
fields.D	Wendland family of covariance functions and supporting numerical functions
fields.derivative.poly	Fields supporting functions
fields.diagonalize	Fields supporting functions
fields.duplicated.matrix	Fields supporting functions
fields.evlpoly	Fields supporting functions
fields.evlpoly2	Fields supporting functions
fields.hints	fields - graphics hints
fields.mkpoly	Fields supporting functions
fields.pochdown	Wendland family of covariance functions and supporting numerical functions
fields.pochup	Wendland family of covariance functions and supporting numerical functions
fields.rdist.near	Euclidean distance matrix
fields.style	fields - graphics hints
fields.tests	Testing fields functions
fields.x.to.grid	Some simple functions for working with gridded data and the grid format (grid.list) used in fields.
fitted.Krig	Kriging surface estimate
flame	Response surface experiment ionizing a reagent

-- G --

gcv.Krig	Finds profile likelihood and GCV estimates of smoothing parameters for splines and Kriging.
gcv.sreg	Finds profile likelihood and GCV estimates of smoothing parameters for splines and Kriging.
get.rectangle	Some simple functions for subsetting images
grid list	Some simple functions for working with gridded data and the grid format (grid.list) used in fields.
grid.list	Some simple functions for working with gridded data and the grid format (grid.list) used in fields.

-- H --

half.image

Some simple functions for subsetting images

-- I --

image.plot	Draws image plot with a legend strip for the color scale based on either a regular grid or a grid of quadrilaterals.
image.smooth	Kernel smoother for irregular 2-d data
image2lz	Some simple functions for subsetting images
in.poly	Some simple functions for subsetting images
in.poly.grid	Some simple functions for subsetting images
interp.surface	Fast bilinear interpolator from a grid.
interp.surface.grid	Fast bilinear interpolator from a grid.

-- K --

Krig	Kriging surface estimate
Krig.Amatrix	Smoother (or "hat") matrix relating predicted values to the dependent (Y) values.
Krig.check.xY	Basic linear algebra utilities and other computations supporting the Krig function.
Krig.coef	Basic linear algebra utilities and other computations supporting the Krig function.
Krig.cor.Y	Basic linear algebra utilities and other computations supporting the Krig function.
Krig.engine.default	Basic linear algebra utilities and other computations supporting the Krig function.
Krig.engine.fixed	Basic linear algebra utilities and other computations supporting the Krig function.
Krig.engine.knots	Basic linear algebra utilities and other computations supporting the Krig function.
krig.image	Spatial process estimate for large irregular 2-d dats sets.
Krig.make.u	Basic linear algebra utilities and other computations supporting the Krig function.
Krig.make.W	Basic linear algebra utilities and other computations supporting the Krig function.
Krig.make.Wi	Basic linear algebra utilities and other computations supporting the Krig function.
Krig.null.function	Default function to create fixed matrix part of spatial process model.
Krig.transform.xY	Basic linear algebra utilities and other computations supporting the Krig function.

-- L --

lennon

Gray image of John Lennon.

-- M --

make.surface.grid	Some simple functions for working with gridded data and the grid format (grid.list) used in fields.
Matern	Covariance functions
Matern.cor.to.range	Covariance functions
matern.image.cov	Exponential, Matern and general covariance functions for 2-d gridded locations.
minitri	Mini triathlon results
mKrig	"micro Krig" Spatial process estimate of a curve or surface, "kriging" with a known covariance function.
mKrig.coef	"micro Krig" Spatial process estimate of a curve or surface, "kriging" with a known covariance function.
mKrig.grid	Using MKrig for predicting on a grid.
mKrig.trace	"micro Krig" Spatial process estimate of a curve or surface, "kriging" with a known covariance function.

-- O --

ozone	Data set of ozone measurements at 20 Chicago monitoring stations.
ozone2	Daily 8-hour ozone averages for sites in the Midwest

-- P --

parse.grid.list	Some simple functions for working with gridded data and the grid format (grid.list) used in fields.
plot.Krig	Diagnostic and summary plots of a Kriging or spline object
plot.sreg	Diagnostic and summary plots of a Kriging or spline object
plot.surface	Plots a surface
plot.vgram.matrix	Computes a variogram from an image
plot.Wimage	Plots 2-d wavelet coefficents by level and type
poisson.cov	Poisson spherical covariance function
poly.image	Image plot for cells that are irregular quadrilaterals.
poly.image.regrid	Image plot for cells that are irregular quadrilaterals.
predict.derivative.Krig	Evaluation of Krig spatial process estimate.
predict.Krig	Evaluation of Krig spatial process estimate.
predict.mKrig	"micro Krig" Spatial process estimate of a curve or surface, "kriging" with a known covariance function.
predict.se	Standard errors of predictions
predict.se.Krig	Standard errors of predictions for Krig spatial process estimate
predict.se.KrigA	Standard errors of predictions for Krig spatial process estimate
predict.se.mKrig	Standard errors of predictions for Krig spatial process estimate
predict.surface	Evaluates a fitted function or its standard errors as a surface object
predict.surface.se	Evaluates a fitted function or its standard errors as a surface object
print.Krig	Print kriging fit results.
print.mKrig	"micro Krig" Spatial process estimate of a curve or surface, "kriging" with a known covariance function.
PRISMelevation	Monthly total precipitation (mm) for August 1963 in the Rocky Mountain Region and some gridded 4km elevation data sets.
pushpin	Adds a "push pin" to an existing 3-d plot

-- Q --

qsreg	Quantile or Robust spline regression
quilt.plot	Image plot for irregular spatial data.

-- R --

Rad.cov	Exponential family, radial basis functions,cubic spline, compactly supported Wendland family and stationary covariances.
Rad.image.cov	Exponential, Matern and general covariance functions for 2-d gridded locations.
Rad.simple.cov	Exponential family, radial basis functions,cubic spline, compactly supported Wendland family and stationary covariances.
RadialBasis	Covariance functions
rat.diet	Experiment studying an appetite supressant in rats.
RCMexample	3-hour precipitation fields from a regional climate model
rdist	Euclidean distance matrix
rdist.earth	Great circle distance matrix
resid.Krig	Kriging surface estimate
ribbon.plot	Adds to an existing plot, a ribbon of color, based on values from a color scale, along a sequence of line segments.
RMelevation	Monthly total precipitation (mm) for August 1963 in the Rocky Mountain Region and some gridded 4km elevation data sets.
RMprecip	Monthly total precipitation (mm) for August 1963 in the Rocky Mountain Region and some gridded 4km elevation data sets.

-- S --

set.panel	Specify a panel of plots
setup.image.smooth	Kernel smoother for irregular 2-d data
sim.Krig.grid	Conditonal simulation of a spatial process
sim.Krig.standard	Conditonal simulation of a spatial process
sim.rf	Simulates a random field
smooth.2d	Kernel smoother for irregular 2-d data
spam2full	Conversion of formats for sparse matrices
spam2spind	Conversion of formats for sparse matrices
spind2full	Conversion of formats for sparse matrices
spind2spam	Conversion of formats for sparse matrices
splint	Cubic spline interpolation
sreg	Smoothing spline regression
stationary.cov	Exponential family, radial basis functions,cubic spline, compactly supported Wendland family and stationary covariances.
stationary.image.cov	Exponential, Matern and general covariance functions for 2-d gridded locations.
stationary.taper.cov	Exponential family, radial basis functions,cubic spline, compactly supported Wendland family and stationary covariances.
stats	Calculate summary statistics
stats.bin	Bins data and finds some summary statistics.
summary.Krig	Summary for Krig spatial process estimate
summary.ncdf	Summarizes a netCDF file handle
surface.Krig	Plots a surface and contours
surface.mKrig	Plots a surface and contours

-- T --

test.for.zero	Testing fields functions
tim.colors	Some useful color tables for images.
Tps	Thin plate spline regression
transformx	Linear transformation
two.colors	Some useful color tables for images.

-- U --

US	Plot of the US with state boundaries
US.dat	Outline of coterminous US and states.

-- V --

vgram	Finds a traditional or robust variogram for spatial data.
vgram.matrix	Computes a variogram from an image

-- W --

W.i2s	Gives indexing imfomration for a wavelet decompostion
W.info	Gives indexing imfomration for a wavelet decompostion
W.s2i	Gives indexing imfomration for a wavelet decompostion
Wendland	Wendland family of covariance functions and supporting numerical functions
Wendland.beta	Wendland family of covariance functions and supporting numerical functions
wendland.cov	Exponential family, radial basis functions,cubic spline, compactly supported Wendland family and stationary covariances.
wendland.eval	Wendland family of covariance functions and supporting numerical functions
Wendland2.2	Wendland family of covariance functions and supporting numerical functions
Wimage.cov	Functions for W-transform based covariance models
Wimage.i2s	Finds key indices related to a 2-d multiresolution
Wimage.info	Finds key indices related to a 2-d multiresolution
Wimage.info.plot	Plot to check 2-d multiresolution indexing
Wimage.s2i	Finds key indices related to a 2-d multiresolution
Wimage.sim	Functions for W-transform based covariance models
world	Plot of the world
world.color	Plot of the world
Wtransform	Quadratic W wavelet transform for 1-d vectors or rectangular or cylindrical images
Wtransform.cylinder.image	Quadratic W wavelet transform for 1-d vectors or rectangular or cylindrical images
Wtransform.image	Quadratic W wavelet transform for 1-d vectors or rectangular or cylindrical images
Wtransform.image.cov	Functions for W-transform based covariance models

-- X --

xline

Draw a vertical line

-- Y --

yline

Draw horizontal lines