Class "exponential"

Exponential transform class, which represents a transformation given by the function $$f(parameter,a,b)=e^{parameter/b}*\frac{1}{a}$$

Slots

.Data

Object of class "function".

a

Object of class "numeric" -- non-zero constant.

b

Object of class "numeric"- non-zero constant.

parameters

Object of class "transformation" -- flow parameter to be transformed.

transformationId

Object of class "character" -- unique ID to reference the transformation

Note

The exponential transformation object can be evaluated using the eval method by passing the data frame as an argument.The transformed parameters are returned as a matrix with a single column

Objects from the Class

Objects can be created by calls to the constructorexponential(parameters,a,b).

Extends

Class "singleParameterTransform", directly.

Class "transform", by class "singleParameterTransform", distance 2.

Class "transformation", by class "singleParameterTransform", distance 3.

Class "characterOrTransformation", by class "singleParameterTransform", distance 4.

References

Gating-ML Candidate Recommendation for Gating Description in Flow Cytometry V 1.5

See also

logarithm

Other mathematical transform classes: EHtrans-class, asinht-class, asinhtGml2-class, dg1polynomial-class, hyperlog-class, hyperlogtGml2-class, invsplitscale-class, lintGml2-class, logarithm-class, logicletGml2-class, logtGml2-class, quadratic-class, ratio-class, ratiotGml2-class, sinht-class, splitscale-class, squareroot-class, unitytransform-class

Examples

 dat <- read.FCS(system.file("extdata","0877408774.B08",
  package="flowCore"))
  exp1<-exponential(parameters="FSC-H",a=1,b=37,transformationId="exp1")
  transOut<-eval(exp1)(exprs(dat))