seedfill {simecol} | R Documentation |
Fills a bounded area within a numeric matrix with a given number (color).
seedfill(z, x=1, y=1, fcol=0, bcol=1, tol=1e-6)
z |
a matrix containing an image (double precision values are possible). |
x, y |
start coordinates of the filled area. |
fcol |
numeric value of the fill color. |
bcol |
numeric value of the border value. |
tol |
numeric value of border color tolerance. |
The function implements a basic color fill algorithm for use in image manipulation or cellular automata.
A matrix with the same structure as z
.
# define a matrix z<-matrix(0, nrow=20, ncol=20) # draw some lines z[10,]<-z[,10] <- 1 z[5,] <-z[,5] <- 3 # plot matrix and filled variants par(mfrow=c(2, 2)) image(z) image(seedfill(z)) image(seedfill(z ,x=15, y=15, fcol=1, bcol=3)) image(seedfill(z, x=7, y=7, fcol=3, bcol=1))