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Jim Lindsey wrote:> > I have a function that returns a dataframe. A second funtion calls the > first to obtain the dataframe, then attaches it to have access to the > column names. Lo and behold, this is done globally so that, after > running the second function a few times, I have all kinds of > dataframes attached giving all sorts of weird errors. If I put a > detach at the end of the second function, things are better, but > during debugging, if I ctrl-C while it is running (this is a random > effects Cox PH model, rather slow), I start accumulating dataframes > again. I suppose that if (some version of) S-Plus does the same thing, > this must be good stuff but it is a very annoying side effect of a > function to have dataframes attached globally and not locally.S-PLUS 3.3 does do the same thing. If you want to safely detach the data frame even when you inturrupt your function, you could put on.exit(if(search()[2]=="your.data.frame") detach()) at the beginning of your function. Martyn -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Jim Lindsey wrote:> > I have a function that returns a dataframe. A second funtion calls the > first to obtain the dataframe, then attaches it to have access to the > column names. Lo and behold, this is done globally so that, after > running the second function a few times, I have all kinds of > dataframes attached giving all sorts of weird errors. If I put a > detach at the end of the second function, things are better, but > during debugging, if I ctrl-C while it is running (this is a random > effects Cox PH model, rather slow), I start accumulating dataframes > again. I suppose that if (some version of) S-Plus does the same thing, > this must be good stuff but it is a very annoying side effect of a > function to have dataframes attached globally and not locally.S-PLUS 3.3 does do the same thing. If you want to safely detach the data frame even when you interrupt your function, you could put on.exit(if(search()[2]=="your.data.frame") detach()) at the beginning of your function. Martyn -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._