quantile.im {spatstat.geom} | R Documentation |
Compute the sample quantiles of the pixel values of a given pixel image.
## S3 method for class 'im'
quantile(x, ...)
x |
A pixel image.
An object of class |
... |
Optional arguments passed to |
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.
A vector of quantiles.
Adrian Baddeley Adrian.Baddeley@curtin.edu.au
and Rolf Turner rolfturner@posteo.net
# artificial image data
Z <- setcov(square(1))
# find the quartiles
quantile(Z)
# find the deciles
quantile(Z, probs=(0:10)/10)