This function reads in a DPL compact format file of ring widths.
read.compact(fname)a character vector giving the file name of the
rwl file.
An object of class c("rwl", "data.frame") with the series in
columns and the years as rows. The series IDs are the
column names and the years are the row names.
This function should be able to read files written by the Dendrochronology Program Library (DPL) in its compact format.