Maximum, Minimum, Mean, Median, Range or Sum of Pixel Values in an Image

Calculates the mean, median, range, sum, maximum or minimum of the pixel values in a pixel image.

methods, spatial, univar
## S3 method for class 'im':
max(x, \dots)
  ## S3 method for class 'im':
min(x, \dots)
  ## S3 method for class 'im':
mean(x, \dots)
  ## S3 method for class 'im':
median(x, \dots)
  ## S3 method for class 'im':
range(x, \dots)
  ## S3 method for class 'im':
sum(x, \dots)
A pixel image (object of class "im").
Arguments passed to mean.default.

These functions calculate the mean, median, range, sum, maximum or minimum of the pixel values in the image x.

An object of class "im" describes a pixel image. See im.object) for details of this class.

The function is a method for the generic function mean for the class "im". Similarly is a method for the generic median and is a method for range. If the image x is logical-valued, the mean value of x is the fraction of pixels that have the value TRUE. The median is not defined.

If the image x is factor-valued, then the mean of x is the mean of the integer codes of the pixel values. The median and range are not defined.

Any arguments in ... are passed to the default method, for example mean.default. In particular, using the argument trim will compute the trimmed mean, as explained in the help for mean.default.

Other information about an image can be obtained using or


  • A single number.

See Also

mean, median, range, sum, mean.default, median.default, range.default,, im.object,

X <-,y) {x^2}, unit.square())

  mean(X, trim=0.05)
Documentation reproduced from package spatstat, version 1.20-2, License: GPL (>= 2)

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