Description Objects from the Class Slots Extends Methods Note Author(s) References See Also Examples

Hyperlog transformation of a parameter is defined by the function

*f(parameter,a,b)=root{EH(y,a,b)-parameter}*

where EH is a function defined by

*EH(y,a,b)= 10^{(\frac{y}{a})} + \frac{b*y}{a}-1 ~~~~y>=0*

*-10^{(\frac{-y}{a})} + \frac{b*y}{a}+1 ~~~~y<0*

Objects can be created by calls to the constructor
`hyperlog(parameter,a,b,transformationId)`

`.Data`

:Object of class

`"function"`

~~`a`

:Object of class

`"numeric"`

- numeric constant treater than zero`b`

:Object of class

`"numeric"`

numeric constant greater than zero`parameters`

:Object of class

`"transformation"`

-flow parameter to be transformed`transformationId`

:Object of class

`"character"`

- unique ID to reference the transformation

Class `"singleParameterTransform"`

, directly.
Class `"transform"`

, by class "singleParameterTransform", distance 2.
Class `"transformation"`

, by class "singleParameterTransform", distance 3.
Class `"characterOrTransformation"`

, by class "singleParameterTransform", distance 4.

No methods defined with class "hyperlog" in the signature.

The 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. (See example below)

Gopalakrishnan N, F.Hahne

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

EHtrans

1 2 3 4 | ```
dat <- read.FCS(system.file("extdata","0877408774.B08",
package="flowCore"))
hlog1<-hyperlog("FSC-H",a=1,b=1,transformationId="hlog1")
transOut<-eval(hlog1)(exprs(dat))
``` |

flowCore documentation built on May 20, 2017, 9:51 p.m.

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