Convert Pixel Image to Matrix or Array
Converts a pixel image to a matrix or an array.
## S3 method for class 'im' as.matrix(x, ...) ## S3 method for class 'im' as.array(x, ...)
x |
A pixel image (object of class |
... |
See below. |
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.
A matrix or array.
Adrian Baddeley Adrian.Baddeley@curtin.edu.au
and Rolf Turner r.turner@auckland.ac.nz
# 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)))
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