Nothing
## ---- include = FALSE---------------------------------------------------------
knitr::opts_chunk$set(
collapse = TRUE,
comment = "#>"
)
## ----setup--------------------------------------------------------------------
library(affinity)
## ----adjacency----------------------------------------------------------------
(m <- matrix(1:12, 3))
tl(m)
tr(m)
bl(m)
br(m)
tl(br(m))
image0(tl(br(m)))
text0(tl(br(m)))
n <- 8
nbr <- 2
line <- seq(-nbr, nbr)
line + n
## we have values 1:12
## if we want the topleft neighbour in a *corner* orientation
matrix(c(tl(m), tr(m), bl(m), br(m)), ncol = 4L)
## see that the topleft corner of 1 (find 1 in the first column, row 4)
# has values 1 and 4 (there's no column to their left)
## the topleft corner of 5 has values 4, 5, 7, 8 (row 10 in the print out)
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