Plots the current mapping of Raw file names to their shortened version.

Description

Convenience function to plot the mapping (e.g. to a PDF device for reporting). The data frame can be accessed directly via .$raw_file_mapping. If no mapping exists, the function prints a warning to console and returns NULL (which is safe to use in print(NULL)).

Value

Returns a list of mapping plots if mapping is available, 'NULL' otherwise.

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