Transforms-class {crunch} | R Documentation |
Transformations allow you to change how a variable or cube is displayed without changing the underlying data.
Transforms(..., data = NULL)
TransformsList(..., data = NULL)
transforms(x)
transforms(x) <- value
## S4 method for signature 'CrunchVariable'
transforms(x)
## S4 method for signature 'VariableTuple'
transforms(x)
## S4 replacement method for signature 'CrunchVariable,Transforms'
transforms(x) <- value
## S4 replacement method for signature 'CrunchVariable,'NULL''
transforms(x) <- value
## S4 method for signature 'CrunchCube'
transforms(x)
## S4 method for signature 'VariableCatalog'
transforms(x)
## S4 replacement method for signature 'CrunchCube,ANY'
transforms(x) <- value
## S4 replacement method for signature 'CrunchCube,TransformsList'
transforms(x) <- value
## S4 replacement method for signature 'CrunchCube,'NULL''
transforms(x) <- value
... |
For the constructor function |
data |
For the constructor function |
x |
For the attribute getters and setters, an object of class Transforms |
value |
For the setter, the replacement Transforms to insert |
The transforms(x)
methods can be used with Variables and CrunchCubes to get
what transformations are currently set. For variables, they return a single
Transforms
object that includes all transformations for the variable. For
CrunchCubes, it returns a named list with the same length as the number of
dimensions of the cube with each dimension's transformations.
Currently, Insertions (e.g. Subtotal() and Heading()) are the only type of transformations that are supported.
The transforms(x) <- value
methods can be used to assign transformations
for a specific variable. value
must be a Transforms
object. This allows you to set transformations on
categorical variables. These transformations will automatically show up in
any new CrunchCubes that contain this variable.
The transforms(x) <- value
methods can also be used to assign
transformations to a CrunchCube that has already been calculated. value
must be a named list of Transforms
objects. The names of this list must
correspond to dimensions in the cube (those dimensions correspondences are
matched based on variable aliases). You don't have to provide an entry for
each dimension, but any dimension you do provide will be overwritten fully.
To remove transformations from a variable or CrunchCube, use
transforms(x) <- NULL
.