Tools for spatial data

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Documentation for package ‘fields’ version 4.3

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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.

-- 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 --

coef.Krig Kriging surface estimate
colorbar.plot Adds color scale strips to an existing plot.
cover.design Computes Space-Filling "Coverage" designs using Swapping Algorithm
crop.image Some simple functions for subsetting images

-- 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, 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, compactly supported Wendland family and stationary covariances.
Exponential Covariance functions

-- F --

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.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.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
interp.surface 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.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 --

Matern Covariance functions
matern.image.cov Exponential, Matern and general covariance functions for 2-d gridded locations.
minitri Mini triathlon results
mKrig 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.
predict.Krig Evaluation of Krig spatial process estimate.
predict.mKrig 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.surface Evaluates a fitted function or its standard errors as a surface object
print.Krig Print kriging fit results.
print.mKrig 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, 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, compactly supported Wendland family and stationary covariances.
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
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, 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, 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

-- 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
wendland.coef Wendland family of covariance functions
wendland.cov Exponential family, radial basis functions, compactly supported Wendland family and stationary covariances.
wendland2.2 Wendland family of covariance 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
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