MUST BE DONE IN R LANGUAGE

Exercise 3.15

Fill in blanks of the following function so that the eyes region of Mona Lisa is covered by pure color, not mosaic.

mosaic.plot.2 <- function(picture, yrange, xrange, degree){

length.y <- _______(yrange)

length.x <- length(______)

pic2 <- picture

pic2@____[_______,_______] <- degree

return(pic2)

}

Setting the degree=0, 0.5 and 1 respectively, plot the images of Mona Lisa that eyes region are covered by pure colors.