p.adjustSP {spdep} | R Documentation

## Adjust local association measures' p-values

### Description

Make an adjustment to local association measures' p-values based on the number of neighbours (+1) of each region, rather than the total number of regions.

### Usage

    p.adjustSP(p, nb, method = "none")

### Arguments

`p` | vector of p-values
`nb` | a list of neighbours of class `nb`
`method` | correction method as defined in `p.adjust`: "The adjustment methods include the Bonferroni correction ('"bonferroni"') in which the p-values are multiplied by the number of comparisons. Four less conservative corrections are also included by Holm (1979) ('"holm"'), Hochberg (1988) ('"hochberg"'), Hommel (1988) ('"hommel"') and Benjamini & Hochberg (1995) ('"fdr"'), respectively. A pass-through option ('"none"') is also included."

### Value

A vector of corrected p-values using only the number of neighbours + 1.

### Author(s)

Danlin Yu and Roger Bivand Roger.Bivand@nhh.no

### See Also

`p.adjust`, `localG`, `localmoran`

### Examples

    data(afcon)
    oid <- order(afcon$id)
    resG <- as.vector(localG(spNamedVec("totcon", afcon), nb2listw(include.self(paper.nb))))
    non <- format.pval(pnorm(2*(abs(resG)), lower.tail=FALSE), 2)
    bon <- format.pval(p.adjustSP(pnorm(2*(abs(resG)), lower.tail=FALSE), paper.nb, "bonferroni"), 2)
    tot <- format.pval(p.adjust(pnorm(2*(abs(resG)), lower.tail=FALSE), "bonferroni", n=length(resG)), 2)
    data.frame(resG, non, bon, tot, row.names=afcon$name)[oid,]

[Package spdep version 0.3-25 Index]