R: Sample Quantiles of Pixel Image

quantile.im {spatstat} | R Documentation

## Sample Quantiles of Pixel Image

### Description

Compute the sample quantiles of the pixel values of a given pixel image.

### Usage

    ## S3 method for class 'im'
    quantile(x, ...)

### 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. See `quantile.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.

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au

and Rolf Turner r.turner@auckland.ac.nz

### See Also

`quantile`, `cut.im`, `im.object`

### Examples

    # artificial image data
    Z <- setcov(square(1))

    # find the quartiles
    quantile(Z)

    # find the deciles
    quantile(Z, probs=(0:10)/10)

[Package spatstat version 1.54-0 Index]