Create a new transformation object

A transformation encapsulates a transformation and its inverse, as well as the information needed to create pleasing breaks and labels. The breaks() function is applied on the un-transformed range of the data, and the format() function takes the output of the breaks() function and returns well-formatted labels. Transformations may also include the derivatives of the transformation and its inverse, but are not required to.

Usage

new_transform(
  name,
  transform,
  inverse,
  d_transform = NULL,
  d_inverse = NULL,
  breaks = extended_breaks(),
  minor_breaks = regular_minor_breaks(),
  format = format_format(),
  domain = c(-Inf, Inf)
)

trans_new(
  name,
  transform,
  inverse,
  d_transform = NULL,
  d_inverse = NULL,
  breaks = extended_breaks(),
  minor_breaks = regular_minor_breaks(),
  format = format_format(),
  domain = c(-Inf, Inf)
)

is.transform(x)

is.trans(x)

as.transform(x, arg = deparse(substitute(x)))

as.trans(x, arg = deparse(substitute(x)))

Arguments

name: transformation name
transform: function, or name of function, that performs the transformation
inverse: function, or name of function, that performs the inverse of the transformation
d_transform: Optional function, or name of function, that gives the derivative of the transformation. May be NULL.
d_inverse: Optional function, or name of function, that gives the derivative of the inverse of the transformation. May be NULL.
breaks: default breaks function for this transformation. The breaks function is applied to the un-transformed data.
minor_breaks: default minor breaks function for this transformation.
format: default format for this transformation. The format is applied to breaks generated on the un-transformed data.
domain: the allowed range of the data to be transformed. The function in the transform argument is expected to be able to transform the domain argument.

Usage

Arguments

See also