| period | R Documentation |
Paste two years to form a period string.
period(x, y = NULL)
x |
the first year, vector of years, matrix, or data frame. |
y |
the last year, if |
If x is a vector or a data frame, then the lowest and highest years
are used, and y is ignored.
If x is a matrix or data frame, this function looks for years in the
first column. If the values of the first column do not look like years (four
digits), then it looks for years in the row names.
A string of the form "1990-2000".
This function can be useful when working with draft.data.
paste is the underlying function to paste strings.
draft.data has an argument called period.
TAF-package gives an overview of the package.
period(1963, 1970)
period(c(1963, 1970))
period(1963:1970)
period(range(catage.taf$Year))
period(catage.taf$Year)
period(catage.taf)
period(catage.xtab)
period(catage.long)
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