[R] digits argument for print method for dataframe

[Jason Turner]

> First, how does the digits argument to the print method for dataframes work? 

It specifies the number of significant digits to display.  In your example,
with digits=7, each column had 7 sig. figs.

> Second, do people have generic advice on "pretty printing"? 

For pretty export to LaTeX or HTML, I use the "xtable"
library, which is on CRAN.  I think it's nice.

http://cran.r-project.org/src/contrib/PACKAGES.html#xtable

Cheers

Jason
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