correlogram
From spatialEco v1.3-2
by Jeffrey S Evans
Correlogram
Calculates and plots a correlogram
Usage
correlogram(x, v, dist = 5000, dmatrix = FALSE, ns = 99, latlong = FALSE, ...)
Arguments
- x
SpatialPointsDataFrame object
- v
Test variable in x@data
- dist
Distance of correlation lags, if latlong=TRUE units are in kilometers
- dmatrix
Should the distance matrix be include in output (TRUE/FALSE)
- ns
Number of simulations to derive simulation envelope
- latlong
Coordinates are in latlong (TRUE/FALSE)
- ...
Arguments passed to cor ('pearson', 'kendall' or 'spearman')
Value
A list object containing:
autocorrelation is a data.frame object with the following components
autocorrelation - Autocorrelation value for each distance lag
dist - Value of distance lag
lci - Lower confidence interval (p=0.025)
uci - Upper confidence interval (p=0.975)
CorrPlot recordedplot object to recall plot
dmatrix Distance matrix (if dmatrix=TRUE)
Examples
# NOT RUN {
library(sp)
data(meuse)
coordinates(meuse) = ~x+y
zinc.cg <- correlogram(x = meuse, v = meuse@data[,'zinc'], dist = 250, ns = 9)
# }
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