Learn R Programming

⚠️There's a newer version (16.3) of this package.Take me there.

fields (version 1.5)

Tools for spatial data

Description

Fields is a collection of programs for curve and function fitting with an emphasis on spatial data and spatial statistics. The major methods implemented include cubic, robust, and thin plate splines, universal Kriging and Kriging for large data sets. One main feature is any covariance function implemented in R can be used for spatial prediction. There are also some useful functions for plotting and working with spatial data as images. This package also contains implementation of a smooth wavelet basis suitable for spatial models.

Copy Link

Version

Install

install.packages('fields')

Monthly Downloads

46,589

Version

1.5

License

GPL Version 2 or later.

Maintainer

Douglas Nychka

Last Published

October 1st, 2024

Functions in fields (1.5)

US.dat

Outline of coterminous US and states.
smooth.2d

Kernel smoother for irregular 2-d data
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.
Wtransform

Quadratic W wavelet transform for 1-d vectors or rectangular or cylindrical images
print.Krig

Print kriging fit results.
poisson.cov

Poisson spherical covariance function
stats.bin

Bins data and finds some summary statistics.
krig.image

Spatial process estimate for large irregular 2-d dats sets.
bplot

boxplot
image.count

Creates image for a 2-d histogram from irregular locations
nkreg

Normal kernel regression estimate
predict.se

Standard errors of predictions
set.panel

Specify a panel of plots
rdist

Euclidean distance matrix
as.surface

Creates an "surface" object from grid values.
plot.surface

Plots a surface
vgram.matrix

Computes a variogram from an image
fields

fields - tools for spatial data
fields internal

Fields internal and secondary functions
predict.Krig

Evaluation of Krig spatial process estimate.
bplot.xy

Boxplots for conditional distribution
predict.surface

Evaluates a fitted function as a surface object
as.image

Creates image from irregular x,y,z
sreg

Smoothing spline regression
interp.surface

Fast bilinear interpolator from a grid.
Krig

Kriging surface estimate
sim.rf

Simulates a random field
flame

Response surface experiment ionizing a reagent
exp.cov

Exponential, Gaussian and "power" covariance family
summary.Krig

Summary for Krig spatial process estimate
image.cov

Exponential,Gaussian, "power" and Matern covariance functions for 2-d gridded locations
lennon

Gray image of John Lennon.
Tps

Thin plate spline regression
matern.cov

Matern covariance function
arrow.plot

Adds arrows to a plot
stats

Calculate summary statistics
US

Plot of the US with state boundaries
yline

Draw horizontal lines
qsreg

Quantile or Robust spline regression
minitri

Mini triathlon results
vgram

Finds a traditional or robust variogram for spatial data.
image.plot

Draws image plot with a legend strip for the color scale.
tim.colors

Tim's useful color table
ozone

Data set of ozone measurements at 20 Chicago monitoring stations.
make.Amatrix.Krig

Computes the prediction matrix for a Krig fit.
make.Amatrix

Matrix relating predicted values to the dependent (Y) values
image.smooth

Kernel smoother for irregular 2-d data
plot.Krig

Diagnostic and summary plots of the Krig object
cover.design

Computes Space-Filling "Coverage" designs using Swapping Algorithm
grid list

Grid list for describing equally spaced grids
rdist.earth

Great circle distance matrix
predict.surface.se

Standard errors of predictions
xline

Draw a vertical line
predict.se.Krig

Standard errors of predictions for Krig spatial process estimate
ozone2

Daily 8-hour ozone averages for sites in the Midwest
precip

Standardized monthly precipitation for August 1963 inteh Rocky Mountain Region
world

Plot of the world
Wtransform.sim

Simulates a 2-d random wavelet field
transformx

Linear transformation
rat.diet

Experiment studying an appetite supressant in rats.
plot.sreg

Plots smoothing spline regression object
surface.Krig

Plots a surface and contours
splint

Cubic spline interpolation