scales::percent appears not to be documented.
Details:
At http://cran.r-project.org/web/packages/scales/scales.pdf, equivalently in
?percent, I find no answer to the following two questions.
(1) How can I specify the number of decimal points in a call to percent()? For
instance, 0.010101 could be
1%
1.0%
1.01%
etc. depending on what kind of report I'm writing.
I can control precision myself by writing
mypercent<-function(theargument, siglevel=2) {
stopifnot(is.numeric(theargument))
paste(signif(theargument, siglevel) * 100, "%", sep="")
}
and then we have
mypercent(0.010101)
[1] "1%"
mypercent(0.010101, 5)
[1] "1.0101%"
mypercent(0.010101, 3)
[1] "1.01%"
(2) What is the function precision() inside percent()? I find no documentation
for it, and in fact it does not appear in the search path. Nor does round_any().
percent(0.010101)
[1] "1.01%"
percent
function (x)
{
x <- round_any(x, precision(x)/100)
str_c(comma(x * 100), "%")
}
<environment: 0x10c0f9350>
find("precision")
character(0)
find("round_any")
character(0)
Thanks for any insights
Jacob Wegelin
sessionInfo()
R version 2.15.3 (2013-03-01)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] tools grid splines stats graphics grDevices utils
datasets methods base
other attached packages:
[1] scales_0.2.3 xtable_1.7-0 reshape2_1.2.2 moments_0.13
corrplot_0.70 ggplot2_0.9.3.1 nlme_3.1-108
loaded via a namespace (and not attached):
[1] colorspace_1.2-0 dichromat_1.2-4 digest_0.6.0 gtable_0.1.2
labeling_0.1 lattice_0.20-13 MASS_7.3-23 munsell_0.4
[9] plyr_1.8 proto_0.3-10 psych_1.2.8 RColorBrewer_1.0-5 stringr_0.6.2
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