Tag Extraction #

Finding ’things’ in reads, and then using that information is called ’tagging'.

Extraction and downsteam steps are tied together with arbitrary ’labels'.

This allows you to efficiently perform multiple actions with one search, for example trim adapter tags and keep only reads that contain the adapter.

You first use one of the following steps to extract read information:

Extract Iupac

And then you get to use one of the following to make use of it :

• TrimTag to trim the read at the tag
• LowercaseTag to trim the read at the tag
• AddTagSequenceToName to add the tag sequence to the read name.
• FilterTag to keep or remove reads matching the tag