quantile.im
From spatstat v1.42-2
by Adrian Baddeley
Sample Quantiles of Pixel Image
Compute the sample quantiles of the pixel values of a given pixel image.
Usage
## S3 method for class 'im':
quantile(x, \dots)
Arguments
- x
- A pixel image.
An object of class
"im"
. - ...
- Optional arguments passed to
quantile.default
. They determine the probabilities for which quantiles should be computed. Seequantile.default
Details
This simple function applies the generic quantile
operation
to the pixel values of the image x
.
This function is a convenient way to inspect an image and to obtain summary statistics. See the examples.
Value
- A vector of quantiles.
See Also
Examples
# artificial image data
Z <- setcov(square(1))
# find the quartiles
quantile(Z)
# find the deciles
quantile(Z, probs=(0:10)/10)
Community examples
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