clean_issn | R Documentation |
This function removes whitespace and punctuation from ISSNs and returns them in correct ISSN format. An ISSN is formatted as NNNN-NNNX, where N is a number, and X can be any number or character. If ISSNs are formatted differently, this can give errors when using a public API, so they can be reformatted with this function. A string with a different length will return NA.
clean_issn(column)
column |
ISSN(s) |
cleaned ISSN(s), vectorized
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