log_trans: Apply log2 transformation for matrix data if not.

In Yunuuuu/rgeo: R interface for GEO database

Apply log2 transformation for matrix data if not.

Description

Apply log2 transformation for matrix data if not.

Usage

log_trans(data, pseudo = 1)

Arguments

data	A matrix-like data object.
pseudo	Since expression values for a gene can be zero in some conditions (and non-zero in others), some advocate the use of pseudo-expression values, i.e. transformations of the form: log2(exprs + pseudo)

Details

Automatically check whether data has been logarithmically transformed, if not, applying a log2 transformation. The test methodology for logarithm transformation is based on GEO2R

Value

A matrix or an ExpressionSet object

References

geo2r analysis

Yunuuuu/rgeo documentation built on Dec. 23, 2024, 10:01 p.m.