R: Signed Log

SignedLog {DataVisualizations} | R Documentation

## Signed Log

### Description

Computes the Signed Log if Data

### Usage

    SignedLog(Data,Base="Ten")

### Arguments

`Data` | [1:n,1:d] Data matrix with n cases and d variables
`Base` | Either "Ten", "Two", "Zero", or any number.

### Details

A neat transformation for data, it it has a better representation on the log scale.

### Value

Transformed Data

### Note

Number Selections for `Base` for 2,10, "Two" or "Ten" add 1 to every datapoint as defined in the lectures.

### Author(s)

Michael Thrun

### References

Prof. Dr. habil. A. Ultsch, Lectures in Knowledge Discovery, 2014.

### See Also

`log`

### Examples

    # sampling is done
    # because otherwise the example takes too long
    # in the CRAN check
    data('ITS')
    ind=sample(length(ITS),1000)

    MDplot(SignedLog(cbind(ITS[ind],MTY[ind])*(-1),Base = "Ten"))

[Package DataVisualizations version 1.2.3 Index]