Converts a pixel image to a matrix or an array.
# S3 method for im
as.matrix(x, ...)
# S3 method for im
as.array(x, ...)
A pixel image (object of class "im"
).
See below.
A matrix or array.
The function as.matrix.im
converts the pixel image x
into a matrix containing the pixel values.
It is handy when you want to extract a summary of the pixel values.
See the Examples.
The function as.array.im
converts the pixel image to an array.
By default this is a three-dimensional array of dimension \(n\) by
\(m\) by \(1\).
If the extra arguments …
are given, they will be passed
to array
, and they may change the dimensions of the
array.
# NOT RUN { # artificial image Z <- setcov(square(1)) M <- as.matrix(Z) median(M) # plot the cumulative distribution function of pixel values # plot(ecdf(as.matrix(Z))) # }