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spatialwarnings (version 1.2)

Spatial Early Warning Signals of Ecosystem Degradation

Description

Tools to compute and assess significance of early-warnings signals (EWS) of ecosystem degradation on raster data sets. EWS are metrics derived from the observed spatial structure of an ecosystem -- e.g. spatial autocorrelation -- that increase before an ecosystem undergoes a non-linear transition (Kefi et al. (2014) ).

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Install

install.packages('spatialwarnings')

Monthly Downloads

232

Version

1.2

License

MIT + file LICENSE

Issues

9

Pull Requests

0

Stars

16

Forks

4

Maintainer

Alexandre Genin

Last Published

June 17th, 2018

Functions in spatialwarnings (1.2)

rspectrum

r-spectrum
indictest

Significance-assessment of spatial early-warning signals
spatialwarnings

Early Spatial-Warnings of Ecosystem Degradation
serengeti

Serengeti dataset
spectral_spews

(DEPRECATED) Spectrum-based spatial early-warning signals.
spatialwarnings-deprecated

Deprecated functions in package spatialwarnings.
xmin_estim

Estimate the minimum patch size of a power-law distribution
spectral_sews

Spectrum-based spatial early-warning signals.
indicator_moran

Moran's Index at lag of 1
coarse_grain

Matrix coarse-graining
indicator_psdtype

Change in patch-size distributions types
forestgap

A list of binary matrices and their associated parameters
indicator_plrange

Power-law range indicator
indicator_skewness

Skewness indicator
generic_spews

(DEPRECATED) Generic Spatial Early-Warning signals
generic_sews

Generic Spatial Early-Warning signals
indicator_sdr

Spectral Density Ratio (SDR) indicator
label

Labelling of unique patches and detection of percolation.
indicator_variance

Spatial variance indicator
patchdistr_spews

(DEPRECATED) Early-warning signals based on patch size distributions
patchdistr_sews_plot

Early-warning signals based on patch size distributions
patchdistr_sews

Early-warning signals based on patch size distributions
patchdistr_sews_predict

predict method for patchdistr_sews objects
patchsizes

Get patch sizes.
create_indicator

Custom Spatial Early-Warning signals
raw_moran

Spatial correlation at lag 1
raw_skewness

Skewness