help! what's wrong with setBreakpoint
On 06/12/2011 9:47 AM, Michael wrote:
It printed: c:\R\myproject1\myfile.R#38: myfunc1 step 6,4,9 in<environment: R_GlobalEnv> What do you think?
So that set a breakpoint in the copy of the function in the global environment. Are you sure you were executing the same function after you hit c? If you were working on code in a package, you may have been executing the function in the namespace of the package, not the one in the global environment. If that's not the case, then are you sure you ever got to that line? You can see where the breakpoint was set using body(myfunc1)[[c(6,4,9)]] (Watch the parens and brackets!) Duncan Murdoch
Thank you! On Tue, Dec 6, 2011 at 6:22 AM, Duncan Murdoch<murdoch.duncan at gmail.com>wrote:
On 11-12-05 10:32 PM, Michael wrote:
Hi all,
I am in the middle of debugging which is stopped using "browser()"... in
myfile.R at around line #25.
I was then stuck in a big loop which I want to escape and stop the program
at the line after the big loop.
In the debugging mode, I used
Browse[2]> setBreakpoint("myfile.R#38")
What did it print?
I then typed "c" and "ENTER", thinking that it will continue to execute until when it comes across line #38 and then stop there... But it didn't work - it continued the execution until the end of the function, right at the line "return(results)"... What happened? How to solve this problem?
One of the complications in R is that you can have multiple copies of a function in memory. You may (or may not, what did it print??) have set a breakpoint in one copy, then run another. Or you may have edited that function after originally sourcing it, and lost the source reference. An alternative to using setBreakpoint is just to edit a call to browser() into the function. It's less convenient, but more robust. Duncan Murdoch Thanks a lot!
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