Determine gamma value by data type.
get_gamma(data_type)Type of expression measurements.
(Optional) One-dimensional string.
An optional string indicating the type of the expression measurements. This is used to set gamma to a pre-determined value based upon the data type. Valid values are for probe-level microarray as ``microarray-probe'', gene-level microarray as ``microarray-gene'' or rna-seq as ``rna-seq''. Alternatively can set gamma directly.