I'm working on a program that loads several large data files. I'm using ddply (plyr is really awesome) but I want to minimize the amount of times a large data file is read in. One solution is to keep track of which data file is open with a global variable and then change the currently open data file globally as needed. However, I'm unclear on how to alter a global variable from within a function. For example
m<-3 a<-function(x) m<-4 a(3) m shows that m is still 3 at the end of it all. With the code above, how could I modify the function a to actually set m to whatever value I wanted globally? Thanks for any pointers! -Jarrett ---------------------------------------- Jarrett Byrnes Postdoctoral Associate, Santa Barbara Coastal LTER Marine Science Institute University of California Santa Barbara Santa Barbara, CA 93106-6150 http://www.lifesci.ucsb.edu/eemb/labs/cardinale/people/byrnes/index.html [[alternative HTML version deleted]] ______________________________________________ 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.
