Correcting “summary” in R with appropriate # of digits of precision

Question

A simple question on a simple seemingly innocent function: summary.

Until I saw results for Min and Max that were ou

Answer 1

The default for summary.data.frame is not digits=3, but rather:

   ... max(3, getOption("digits") - 3)  # set in the argument list
getOption("digits")    # the default setting
[1] 7
options(digits=10)
> summary(df)
       V1                    V2                 V3              
 Min.   :-3.70323584   Min.   :    11.0   Min.   :6.790622e-05  
 1st Qu.:-0.66847105   1st Qu.:122798.5   1st Qu.:2.497735e-01  
 Median : 0.00977831   Median :247971.0   Median :5.013797e-01  
 Mean   : 0.01044752   Mean   :248776.4   Mean   :5.001182e-01  
 3rd Qu.: 0.68878422   3rd Qu.:374031.0   3rd Qu.:7.502424e-01  
 Max.   : 3.56810079   Max.   :499931.0   Max.   :9.998686e-01