nbdists
(Package: spdep) :
Spatial link distance measures
Given a list of spatial neighbour links (a neighbours list of object type nb), the function returns the Euclidean distances along the links in a list of the same form as the neighbours list. If longlat = TRUE, Great Circle distances are used.
tolerance.nb
(Package: spdep) :
Function to construct edges based on a tolerance angle and a maximum distance
This function creates an object of class nb (defined in the library spdep) containing a connexion diagram. The edges between sites are based on a tolerance angle and a maximum distance. The angle is directional; its direction is always from the bottow to the top of the screen.
geary.test
(Package: spdep) :
Geary's C test for spatial autocorrelation
Geary's test for spatial autocorrelation using a spatial weights matrix in weights list form. The assumptions underlying the test are sensitive to the form of the graph of neighbour relationships and other factors, and results may be checked against those of geary.mc permutations.
predict.sarlm
(Package: spdep) :
Prediction for spatial simultaneous autoregressive linear
predict.sarlm() calculates predictions as far as is at present possible for for spatial simultaneous autoregressive linear model objects, using Haining's terminology for decomposition into trend, signal, and noise, or other types of predictors — see references.
providing 
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