[R] Suggestion for tapply

Frank E Harrell Jr fharrell at virginia.edu
Thu Jun 7 22:13:56 CEST 2001

In S-Plus the ... argument for tapply is before simplify.
In R (1.2.3) ... is after simplify, causing the user to
have to specify simplify every time ... is used even 
though the default is usually OK.  Unless there was a
benefit to reordering the arguments, it might be a good 
idea to reconsider the current function definition.  
... is probably used more than simplify 
(e.g., tapply(rainfall, state, quantile, probs=c(.25,.75))).

Thanks -Frank
Frank E Harrell Jr              Prof. of Biostatistics & Statistics
Div. of Biostatistics & Epidem. Dept. of Health Evaluation Sciences
U. Virginia School of Medicine  http://hesweb1.med.virginia.edu/biostat
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