spatstat.geom (version 3.2-8)

relevel.im: Reorder Levels of a Factor-Valued Image or Pattern

Description

For a pixel image with factor values, or a point pattern with factor-valued marks, the levels of the factor are re-ordered so that the level ref is first and the others are moved down.

Usage

# S3 method for im
relevel(x, ref, ...)
  # S3 method for ppp
relevel(x, ref, ...)
  # S3 method for ppx
relevel(x, ref, ...)

Value

Object of the same kind as x.

Arguments

x

A pixel image (object of class "im") with factor values, or a point pattern (object of class "ppp", "ppx", "lpp" or "pp3") with factor-valued marks.

ref

The reference level.

...

Ignored.

Author

Adrian Baddeley

Rolf Turner

and Ege Rubak

Details

These functions are methods for the generic relevel.

If x is a pixel image (object of class "im") with factor values, or a point pattern (object of class "ppp", "ppx", "lpp" or "pp3") with factor-valued marks, the levels of the factor are changed so that the level specified by ref comes first.

See Also

mergeLevels

Examples

  amacrine
  relevel(amacrine, "on")