absLog10p {BioQC} | R Documentation

## Absolute base-10 logarithm of p-values

### Description

Absolute base-10 logarithm of p-values

### Usage

    absLog10p(x)

### Arguments

`x` | Numeric vector or matrix The function returns the absolute values of base-10 logarithm of p-values.

### Details

The logarithm transformation of p-values is commonly used to visualize results from statistical tests. Although it may cause misunderstanding and therefore its use is disapproved by some experts, it helps to visualize and interpret results of statistical tests intuitively.

The function transforms p-values with base-10 logarithm, and returns its absolute value. The choice of base 10 is driven by the simplicity of interpreting the results.

### Value

Numeric vector or matrix.

### Author(s)

Jitao David Zhang <jitao_david.zhang@roche.com>

### Examples

    testp <- runif(1000, 0, 1)
    testp.al <- absLog10p(testp)

    print(head(testp))
    print(head(testp.al))

[Package BioQC version 1.18.0 Index]