Robin Hankin wrote:
Hi
I'm having difficulty making a package pass R CMD check.
I need to read in a dataset from another package, modify it, and have the modified object available in the first package. help(require) says:
The source code for a package that requires one or more other packages should have a call to 'require', preferably near the beginning of the source, and of course before any code that uses functions, classes or methods from the other package.
and 200update.txt points out that the data/*.R files must be self sufficient, suggesting "require(pkg, quietly=TRUE, save=FALSE)" if needed. My .R file in the data subdirectory looks like this:
require(calibrator, quietly=TRUE, save=FALSE) data(expert.estimates, package="calibrator") <paraphrase> expert.estimates.modified <- some.function(expert.estimates) </paraphrase>
But if I do this, R CMD check says
Error in eval(expr, envir, enclos) : couldn't find function "data" Execution halted ERROR: installing package indices failed ERROR Installation failed.
[the package passes R CMD check if I cut-and-paste a dput and assign expert.estimates.modified
directly, and dispense with the data() statement].
How do I load a dataset from another package in a .R file, and use it?
You need to require(utils) (the package data() is in),
as well as a corresponsing entry in the DESCRIPTION file.
Also, for Windows, you may need to add the line
ZipData: no
to your DESCRIPTION file, but I am not sure about the latter (and haven't tested yet).
Uwe
______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
