On Thu, 2014-04-24 at 19:29 -0400, Duncan Murdoch wrote: > On 24/04/2014, 6:40 PM, Ross Boylan wrote: > > > r1 <- totalEffect.all(dsim, simjob) > > Error: attempt to apply non-function > > > traceback() > > 1: totalEffect.all(dsim, simjob) > > > class(totalEffect.all) > > [1] "function" > > How can I find out where in totalEffect.all the error is arising? > > My only theory for the lack of line number was that totaEffect.all was > > not a function; it is. Further, previous calls to the function worked, > > and errors in it produced line numbers. After fixing a previous error > > I'm now getting this. > > > > All my code is sourced from files except for the driver. The driver > > code is in the same file that defines totalEffect.all. > > I don't understand this. If totalEffect.all is in a file that is not > sourced, where did it come from? totalEffect is sourced; by "driver" I meant the surrounding code that sets up dsim and simjob and calls totalEffect. > > Generally the rule is that if you source a function from a file you'll > get line number information attached to it, so you should see a line > number reported when an error occurs, or during debugging. There are > exceptions: you can turn this off, and by default, it is turned off for > functions defined in packages (but you can turn it on if you re-install > from source). I'm not in a package.
BTW, I encountered several more instances of the error--that is, from different spots in the code--and never got a line number. Ross > > > > > In this particular case I stepped through with the debugger and found > > that in the line > > accums[[m]]$delta$accum(up - down, data) > > > > the delta object was NULL and so accum is not a function on it. But I > > hope there's a better way to locate an error. > > If the line that triggered this error was in a function that had line > number information, it sounds like it might be a bug. Can you simplify > it down to a simple reproducible example that I could look at? > > 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.
