Dear all
I am happy that summary.default() no longer rounds since R 3.4.0.
However, in R 3.4.0, in a few cases, print.summaryDefault() rounds the
mean value (and the median value) differently on my GNU/Linux machine
and on my colleague's MS-Windows machine. Here is a small (simplified)
reproducible example:
R> a <- 1234568.01 + c(0:1)
R> summary(a)
Output on MS-Windows (expected rounding of the mean value):
Min. 1st Qu. Median Mean 3rd Qu. Max.
1234568 1234568 1234569 1234569 1234569 1234569
Output on GNU/Linux (unexpected rounding of the mean value):
Min. 1st Qu. Median Mean 3rd Qu. Max.
1234568 1234568 1234568 1234568 1234569 1234569
The following code gives the same output on MS-Windows and on GNU/Linux:
R> print(summary(a), digits=9)
Min. 1st Qu. Median Mean 3rd Qu. Max.
1234568.0 1234568.3 1234568.5 1234568.5 1234568.8 1234569.0
R> summary(a)["Mean"]
Mean
1234569
R> mean(a)
[1] 1234569
R> print(mean(a), digits=9)
[1] 1234568.51
Can these outputs be reproduced by other GNU/Linux and MS-Windows users?
If these differences can be reproduced by others: Should these
differences in the output on GNU/Linux and MS-Windows be considered as
a bug?
Does anybody know how one can avoid to get different roundings in the
outputs of summary() on different computers?
Best,
Arne
--
Arne Henningsen
http://www.arne-henningsen.name
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