as.matrix.im {spatstat} | R Documentation |
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@csiro.au http://www.maths.uwa.edu.au/~adrian/ and Rolf Turner r.turner@auckland.ac.nz
# artificial image Z <- setcov(square(1)) M <- as.matrix(Z) median(M) ## Not run: # plot the cumulative distribution function of pixel values plot(ecdf(as.matrix(Z))) ## End(Not run)