merge_data: Merge a set of files representing RNA sequencing gene counts
In jvwong/emRNASeq: Utilities for RNA sequencing analysis

Description Usage Arguments Value

1. Default parameter is do nothing (already matching gene set ids) 2. Optional parameter is to map from input to target namespace Data files must be in tab-delimited format with two columns and no header. The classes are defined by a meta data file which is a tab-delimited text file with headers for the sample read 'id' and 'class'. Each row entry is a corresponding filename and class assignment. Only accepts pair-wise comparison so there must be exactly 2 classes.

1	merge_data(metadata_file, species, source_name, target_name, ...)

`metadata_file`	A metadata file
`species`	A character array indicating the species with which to fetch gene models from bioMart, If NULL this mapping will not be performed
`source_name`	attribute (gene namespace) input
`target_name`	attribute (gene namespace) desired