Ambiguity symbol conversion
Converting DNA ambiguity symbols to regular expressions, and vice versa.
iupac2regex(sequence) regex2iupac(sequence)
sequence |
Character vector containing DNA sequences. |
The DNA alphabet may contain ambiguity symbols, e.g. a W means either A or T.
When using a regular expression search, these letters must be replaced by the proper
regular expression, e.g. W is replaced by [AT] in the string. The iupac2regex makes this
translation, while regex2iupac converts the other way again (replace [AT] with W).
A string where the ambiguity symbol has been replaced by a regular expression
(iupac2regex) or a regular expression has been replaced by an ambiguity symbol
(regex2iupac).
Lars Snipen.
iupac2regex("ACWGT")
regex2iupac("AC[AG]GT")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.