Ordering (sorting) rows of a data frame by the certain
variables in the data frame. This function is essentially a
wrapper for the
order() function - the important
difference being that variables to order by can be given by a
The right hand side of a formula
The sign of the terms in the formula determines whether sorting should be ascending or decreasing; see examples below
The ordered data frame
Søren Højsgaard, [email protected] and Kevin Wright
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