Tools for spatial data

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Documentation for package ‘fields’ version 7.1

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

fields-package fields - tools for spatial data

-- 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
CO2.true Simulated global CO2 observations
coef.Krig Kriging surface estimate
color.scale Some useful color tables for images and tools to handle them.
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 and tools to handle them.
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
fastTps.MLE Maximizes likelihood for the process marginal variance (rho) and nugget standard deviation (sigma) parameters (e.g. lambda) over a list of covariance models or a grid of covariance parameter values.
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.diagonalize2 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.
fieldsPlotColors Some useful color tables for images and tools to handle them.
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.land.grid Plot of the world
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.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 --

larry.colors Some useful color tables for images and tools to handle them.
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.
MaternGLS.test Maximum Likelihood estimates for some Matern covariance parameters.
MaternGLSProfile.test Maximum Likelihood estimates for some Matern covariance parameters.
MaternQR.test Maximum Likelihood estimates for some Matern covariance parameters.
MaternQRProfile.test Maximum Likelihood estimates for some Matern covariance parameters.
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.MLE Maximizes likelihood for the process marginal variance (rho) and nugget standard deviation (sigma) parameters (e.g. lambda) over a list of covariance models or a grid of covariance parameter values.
mKrig.trace "micro Krig" Spatial process estimate of a curve or surface, "kriging" with a known covariance function.
MLE.Matern Maximum Likelihood estimates for some Matern covariance parameters.
MLE.Matern.fast Maximum Likelihood estimates for some Matern covariance parameters.
MLE.objective.fn Maximum Likelihood estimates for some Matern covariance parameters.

-- N --

NorthAmericanRainfall Observed North American summer precipitation from the historical climate network.

-- 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
poly.image Image plot for cells that are irregular quadrilaterals.
poly.image.regrid Image plot for cells that are irregular quadrilaterals.
predict.fastTps 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 This older surface function has been renamed as predictSurface
predict.se.default This older surface function has been renamed as predictSurface
predict.sreg Cubic smoothing spline regression
predict.surface This older surface function has been renamed as predictSurface
predict.surface.default This older surface function has been renamed as predictSurface
predict.surface.derivative This older surface function has been renamed as predictSurface
predict.surface.se This older surface function has been renamed as predictSurface
predict.Tps Evaluation of Krig spatial process estimate.
predictDerivative.Krig Evaluation of Krig spatial process estimate.
predictSE Standard errors of predictions for Krig spatial process estimate
predictSE.Krig Standard errors of predictions for Krig spatial process estimate
predictSE.mKrig Standard errors of predictions for Krig spatial process estimate
predictSEUsingKrigA Standard errors of predictions for Krig spatial process estimate
predictSurface Evaluates a fitted function or the prediction error as a surface that is suitable for plotting with the image, persp, or contour functions.
predictSurface.default Evaluates a fitted function or the prediction error as a surface that is suitable for plotting with the image, persp, or contour functions.
predictSurface.fastTps Evaluates a fitted function or the prediction error as a surface that is suitable for plotting with the image, persp, or contour functions.
predictSurfaceSE Evaluates a fitted function or the prediction error as a surface that is suitable for plotting with the image, persp, or contour functions.
predictSurfaceSE.default Evaluates a fitted function or the prediction error as a surface that is suitable for plotting with the image, persp, or contour functions.
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 1997 in the Rocky Mountain Region and some gridded 4km elevation data sets (m).
pushpin Adds a "push pin" to an existing 3-d plot

-- Q --

qsreg Quantile or Robust spline regression
QTps Robust and Quantile smoothing using a thin-plate spline
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
REML.test Maximum Likelihood estimates for some Matern covariance parameters.
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 1997 in the Rocky Mountain Region and some gridded 4km elevation data sets (m).
RMprecip Monthly total precipitation (mm) for August 1997 in the Rocky Mountain Region and some gridded 4km elevation data sets (m).

-- S --

set.panel Specify a panel of plots
setup.image.smooth Kernel smoother for irregular 2-d data
sim.fastTps.approx Conditional simulation of a spatial process
sim.Krig Conditional simulation of a spatial process
sim.Krig.approx Conditional simulation of a spatial process
sim.mKrig.approx Conditional 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 Cubic 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.mKrig "micro Krig" Spatial process estimate of a curve or surface, "kriging" with a known covariance function.
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 and tools to handle them.
Tps Thin plate spline regression
transformx Linear transformation
two.colors Some useful color tables for images and tools to handle them.

-- 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 --

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
wendland.image.cov Exponential, Matern and general covariance functions for 2-d gridded locations.
Wendland2.2 Wendland family of covariance functions and supporting numerical functions
world Plot of the world
world.color Plot of the world
world.land Plot of the world
WorldBankCO2 Carbon emissions and demographic covariables by country for 1999.

-- X --

xline Draw a vertical line

-- Y --

yline Draw horizontal lines

-- misc --

%d*% Basic linear algebra utilities and other computations supporting the Krig function.