Break lines in a text column of a dataframe.
Given a dataframe with a column containing character string, generate a new dataframe where these strings have a maximal length. Useful when embedding dataframes in a Sweave document, without having it overlapping page width.
Dataframe containing the data.
Maximal length to which strings should be broken.
List with two elements: The resulting dataframe with lines broken, and a vector that gives row where each entry in the new dataframe ends. The latter is useful when horizontal lines should be added when using xtable.
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