smr_stat: Summary Statistics

Description

Computes the summary count statistics of a field given an interaction structure and a restriction family.

cohist() computes the co-ocurrence histogram.
smr_stat() computes the co-ocurrence histogram, then converts it into a vector of sufficient statistics given a family of restrictions.

Usage

smr_stat(Z, mrfi, family)
cohist(Z, mrfi)
vec_description(mrfi, family, C)

Arguments

A matrix object containing the observed MRF. NA values can be used to create a subregion of the lattice for non-rectangular data.

mrfi

A mrfi object representing the interaction structure.

family

The family of parameter restrictions to potentials. Families are: 'onepar', 'oneeach', 'absdif', 'dif' or 'free'. See mrf2d-familiy.

The maximum value of the field.

Value

A numeric vector with the summarized counts.

An array representing the co-ocurrence histogram of Z in the relative positions contained in mrfi. Each row and column corresponds a pair of values in (0, ..., C) and each slice corresponds to

A data.frame describing the relative position and interaction associated with each potential in the vector form in each row, in the same order.

Details

The order the summarized counts appear in the summary vector matches the order in smr_array().

Examples

Run this code

# NOT RUN {
smr_stat(Z_potts, mrfi(1), "onepar")
smr_stat(Z_potts, mrfi(1), "oneeach")

cohist(Z_potts, mrfi(1))

# }