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ncf

Spatial Covariance Functions

R functions for analyzing spatial (cross-)covariance: the nonparametric (cross-)covariance function, the spline correlogram, the nonparametric phase coherence function, local indicators of spatial association (LISA), (Mantel) correlogram, (Partial) Mantel test.

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Version

Install

install.packages('ncf')

Monthly Downloads

694

Version

1.3-2

License

GPL-3

Maintainer

Ottar Bjornstad

Last Published

May 7th, 2022

Functions in ncf (1.3-2)

correlog.nc

Non-centered spatial (cross-)correlogram
cor2

Utility function
mantel.correlog

Mantel (cross-)correlograms
print.spline.correlog

Print function for spline.correlog objects
mSynch

The mean (cross-)correlation (with bootstrapp CI) for a panel of spatiotemporal data
print.Sncf2D

Print function for Sncf2D objects
rmvn.spa

Simulate spatially correlated data
spatial.plot

Simple wrapper around symbols to visualize spatial data
print.mSynch

Print function for mSynch objects
plot.Sncf.cov

Plots nonparametric spatial covariance-functions
spline.correlog

Uni- and multivariate spline correlograms
plot.Sncf

Plots nonparametric spatial correlation-functions
plot.Sncf2D

Plots anisotropic spatial correlation-functions
gcdist

Great-circle distance
plot.cc.offset

Plots the cc.offset summary of the anisotropic spatial correlation-functions
lisa

Local indicator of spatial association
lbm

Spatio-temporal data panel of Larch Budmoth defoliation
lisa.nc

Non-centered indicators of spatial association
summary.Sncf2D

Summarizing anisotropic spatial correlation-functions
print.Sncf

Print function for Sncf objects
summary.spline.correlog

Summarizing spline correlograms
plot.spline.correlog

Plots a spline correlogram
summary.Sncf

Summarizing nonparametric spatial correlation-functions
spline.correlog2D

Anisotropic nonparametric (cross-)correlation function for univariate spatial data
plot.correlog

Plots spatial correlograms
mantel.test

Mantel Test
partial.mantel.test

Partial Mantel test
plot.lisa

Plots local indicators of spatial association
circ.cor2

Circular correlation
Sncf.srf

Nonparametric (Cross-)Covariance Function from stationary random fields
Sncf

Nonparametric (cross-)correlation function for spatio-temporal data
correlog

Uni- and multivariate spatial correlograms
ff.filter

Fourier filter for correlation functions.
gather

Utility function
cc.offset

Function to calculate the distance at which the cross-correlation peaks for Sncf objects
Sncf2D

Anisotropic nonparametric (cross-)correlation function for spatio-temporal data