Message-ID: <FC7C20DD-3754-4D9D-A5AF-04D4DFE7A4F4@plessthan.com>
Date: 2014-11-18T15:23:41Z
From: Dennis Fisher
Subject: duplicated function
R 3.1.1
OS X
Colleagues
When I use the duplicated function, I often need to find both the duplicates and the original element that was duplicated. This can be accomplished with:
duplicated(OBJECT) | duplicated(OBJECT, fromLast=TRUE)
>From my perspective, an improvement in the duplicated function would be an option that accomplishes this with a single call to the function. This could either be:
1. a new option: all=TRUE (pick whatever name makes sense)
2. allowing fromLast to take a new value (e.g., NA, in the spirit of the xpd option in par())
If my suggestion would yield unintended consequences, it can certainly be ignored.
Dennis
Dennis Fisher MD
P < (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
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