On 16/02/2011 9:04 AM, Jan van der Laan wrote:
One possible solution is to use something like:a<- 0 for (i in 1:1E6) { old.a<- a # do something e.g. a<- runif(1)< 1E-6 if (a != old.a) browser() } Another solution is to write your output to file (using sink for example) and to watch this file using a tool like tail.
The trace() function provides this kind of thing temporarily, with a lot of flexibility. setBreakpoint() provides a slightly more friendly way to construct arguments to it -- you can say to set the breakpoint at line 7, not having to work out that line 7 is the 3rd statement within the 2nd statement block in the function.
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.
