On 22/04/2014, 8:59 PM, Benjamin Tyner wrote:
Greetings,Is there any way to programmatically detect whether a piece of code is being run within the initial (Startup) sourcing of the site profile? For example, say I have a site profile, "/path/to/Rprofile.site". Is there any function "my_func" which would return different values for these two instances: Rscript --no-site-profile --no-init-profile -e "sys.source('/path/to/Rprofile.site', envir = .BaseNamespaceEnv); my_func()" versus: export R_PROFILE=/path/to/Rprofile.site Rscript --no-init-profile -e "my_func()"
The commandArgs() function could see the different command lines and your function could deduce the difference from that.
As far as I know, R keeps no other records of the startup process, but if you can modify other files, you could leave a record when .First was run, and see that it was run before Rprofile.site in the first case. See ?Startup.
Duncan Murdoch ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
