Hi,
I'm developing the PKNCA package, and I've got an odd difference between
warning behavior on different operating systems that I can't figure out.
When I run the following code on Windows 10 (with R 3.3.0), I get the
following warning:
library(PKNCA)
source("https://raw.githubusercontent.com/billdenney/pknca/master/tests/testthat/generate.data.R";)
tmpconc <- generate.conc(2, 1, 0:24)
tmpconc$conc <- 0
tmpdose <- generate.dose(tmpconc)
myconc <- PKNCAconc(tmpconc, conc~time|treatment+ID)
mydose <- PKNCAdose(tmpdose, dose~time|treatment+ID)
mydata <- PKNCAdata(myconc, mydose)
myresult <- pk.nca(mydata)
Warning messages:
1: In pk.calc.half.life(conc = c(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, :
Too few points for half-life calculation (min.hl.points=3 with only 0
points)
2: In pk.calc.half.life(conc = c(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, :
Too few points for half-life calculation (min.hl.points=3 with only 0
points)
When I run the code on Linux (Ubuntu 16.04 with R 3.3.1), I do not get a
warning. When I run the code on Linux after "options(warn=1)", I get
the warning. I have confirmed that the same code path is taken in both
Windows and Linux by simply inserting a print statement next to the
warning. The actual warning code is:
warning(sprintf(
"Too few points for half-life calculation (min.hl.points=%g with
only %g points)",
min.hl.points, nrow(dfK)))
This platform inconsistency is causing issues with my package because
the package expects the warnings, and the user should know about the
warnings. I've got test cases expecting the warnings, and they fail
everywhere but Windows
(https://cran.r-project.org/web/checks/check_results_PKNCA.html).
Does anyone have an idea why warnings may behave differently on Windows
compared to non-Windows platforms? Is this a bug in R somewhere? (I've
not been able to make a simpler example that triggers the issue,
unfortunately.)
Thanks,
Bill
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