This function includes improvements to the
read_crn function from the
dplR library. The principle changes are better parsing of metadata, and support
for the Schweingruber-type Tucson format. Chronologies that are unable to be read
are reported to the user. The user (or
read_crn) must tell the function whether
the file is a Schweingruber-type chronology.
A character string path pointing to a
Is the file in the Schweingruber-type Tucson format?
Location information is converted to decimal degrees.
A data.frame containing the metadata.