st_coordinates()
sf
inla()
The basic (B) format uses its input as-is: binary!
nb2mat(nb1, style = "B")[1:4, 1:7]
## [,1] [,2] [,3] [,4] [,5] [,6] [,7] ## 1 0 1 1 0 0 0 0 ## 2 1 0 1 1 0 0 0 ## 3 1 1 0 1 1 0 0 ## 4 0 1 1 0 1 0 0