Dear R-devel members,
I'm in the process of building a package (akmisc) for my own use (Win XP, R
2.0.1 Patched - see details at end).
As I was adding functions (and hence more source .R files) to my package it
got to the point were "R CMD check" failed with the following error (output
has been cut).
* checking S3 generic/method consistency ... WARNING
Error in .try_quietly({ : Error: Unable to load R code in package 'akmisc'
Execution halted
See section 'Generic functions and methods' of the 'Writing R Extensions'
manual.
In an attempt to figure out what went wrong I ran "R CMD INSTALL --build"
and had a look a the file "akmisc" that had been installed in the "akmisc/R"
folder in my default library. The contents of the file ended in (the
function stuff was only for testing)
"plotSymbols" <- function (fn=1) {
## Originally by Henrik Bengtsson
## modified by Rolf Turner
## Posted on R-Help 3 Feb 05
i <- 0:255
ncol <- 16
opar <- par(cex.axis = 0.7, mar = c(3, 3, 3, 3) + 0.1)
plot(i%%ncol, 1 + i%/%ncol, pch=i, font=fn, xlab = "", ylab = "",
axes = FALSE)
axis(1, at = 0:15)
axis(2, at = 1:16, labels = 0:15 * 16, las = 2)
axis(3, at = 0:15)
axis(4, at = 1:16, labels = 0:15 * 16 + 15, las = 2)
par(opar)
}"stuff" <-
function(p){
return(0)
}
As it turns out, the source file plotSymbols.R did not end in an empty line,
which caused an error only when there was another file after it (such as
stuff.R - the last file I had just added). I consequently went back to
"Writing R Extensions" (esp 1.1.4 Package subdirectories), but could not
find any comment suggesting that files had to end with an empty line (or
more).
If I missed such a comment then I don't expect a response. But if I haven't
then it may be useful if a comment is included in the documentation to maybe
help others.
Regards,
Andreas
OS: Windows XP
Precompiled R binary (from CRAN)
> version
_
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status Patched
major 2
minor 0.1
year 2004
month 11
day 21
language R
>
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