[R] POSIXct vs Dates

[Frank E Harrell Jr]

I noticed the addition of the Dates class for dates without times, in R
1.9.  I am making extensive use of POSIXct at present and would like to
know whether it is worth changing to Dates.  What are a few of the
trade-offs?

Thanks,

Frank
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Frank E Harrell Jr   Professor and Chair           School of Medicine
                     Department of Biostatistics   Vanderbilt University