as.matrix.im
From spatstat v1.31-2
by Adrian Baddeley
Convert Pixel Image to Matrix or Array
Converts a pixel image to a matrix or an array.
Usage
## S3 method for class 'im':
as.matrix(x, ...)
## S3 method for class 'im':
as.array(x, ...)
Arguments
- x
- A pixel image (object of class
"im"
). - ...
- See below.
Details
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.
Value
- A matrix or array.
See Also
Examples
# 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)))
Community examples
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