Read Heidelberg Format Ring Width File
This function reads in a Heidelberg (block or column) format file of ring widths (.fh).
This reads in a fh-file with ring widths in blocks (decadal format) or in columns (e.g., as with comment flags) as used by TSAP program. Chronologies or half-chronos in fh-format are not supported.
An object of class
c("rwl", "data.frame") with the series in
columns and the years as rows. The keycodes are the column names and
the years are the row names. Depending on metadata available in the
input file, the following attributes may be present in the
Christian Zang. New features and patches by Mikko Korpela.
Rinn, F. (2003) TSAP-Win User Reference Manual. Rinntech, Heidelberg. http://www.rinntech.com/.
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