# NOT RUN {
# First, get a matrix from your image. Here an example of a bush image is used.
bush<-system.file("extdata/bush.JPG",package ="bwimage")
bush_imagematrix<-threshold_color(bush, "jpeg", "proportional", compress_rate = 0.1)
# Proportion of black pixel below each matrix line.
heigh_propotion(bush_imagematrix)
# }
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