xneig4 {bayess} | R Documentation |
This is a basis function used in simulation algorithms on the Ising and Potts models. It counts how many of the four neighbours of \code{x[a,b]} are of the same colour as this pixel.
xneig4(x, a, b, col)
x |
grid of coloured pixels |
a |
row index |
b |
column index |
col |
current or proposed colour |
integer between 0 and 4 giving the number of neighbours with the same colour
data(Laichedata) xneig4(Laichedata,2,3,1) xneig4(Laichedata,2,3,0)