View source: R/moran.randtest.R
moran.randtest | R Documentation |
This function computes Moran's I statistic and provide a testing procedure using random permutations.
It is based on the moran.mc
function of the spdep
package. The moran.randtest
is slightly different as it allows to consider several variables (x
can have more than one columns)
and its ouputs are objects of class randtest
(one variable) or krandtest
(several variables).
moran.randtest(x, listw, nrepet = 999, ...)
x |
a |
listw |
an object of class |
nrepet |
an integer indicating the number of permutations used in the randomization procedure |
... |
other arguments to be passed to the |
An object of class randtest
(one variable) or krandtest
(several variables)
Stéphane Dray stephane.dray@univ-lyon1.fr
Moran, P. A. P. (1950). Notes on continuous stochastic phenomena. Biometrika, 37, 17-23.
moran.mc
if(require("ade4", quietly = TRUE) & require("spdep", quiet = TRUE)){
data(mafragh)
tests <- moran.randtest(mafragh$env, nb2listw(mafragh$nb))
tests
plot(tests)
}
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