[R] error when calling debugger()

[Patrick Burns]

I ran across this behavior in debugger a while ago -- it is R Problem 2656.
As far as I know, no one has made any sense of what is happening in
debugger, but the bug that was the cause of debugger being called was
trying to subscript columns of a matrix that didn't exist.  (You can see the
example in the bug report.)  That doesn't seem like much of a hint in this
case, however.


Patrick Burns

Burns Statistics
patrick at burns-stat.com
+44 (0)20 8525 0696
http://www.burns-stat.com
(home of S Poetry and "A Guide for the Unwilling S User")

Vadim Ogranovich wrote:

>Hi,
>
>I am getting an error message when I am trying to run the debugger() on
>the last.dump. The debugger() stops after I make a selection. Could
>someone please suggest what it might mean? The R log is included below.
>This is R-1.8.1 on RH 7.3.
>
>Thanks, Vadim
>
>  
>
>>load("last.dump.rda")
>>debugger(last.dump)
>>    
>>
>Message:  Error in split(x, f) : Group length is 0 but data length > 0
>Available environments had calls:
>1: try({
>2: local(for (ticker in univ$ticker) {
>3: eval.parent(substitute(eval(quote(expr), envir)))
>4: eval(expr, p)
>5: eval(expr, envir, enclos)
>6: eval(quote(for (ticker in univ$ticker) {
>7: eval(expr, envir, enclos)
>8: local(for (i in l) {
>9: eval.parent(substitute(eval(quote(expr), envir)))
>10: eval(expr, p)
>11: eval(expr, envir, enclos)
>12: eval(quote(for (i in l) {
>13: eval(expr, envir, enclos)
>14: accumulate(accu, lapply(split(seq(length(key)), key), function(i) {
>15: lapply(split(seq(length(key)), key), function(i) {
>16: split(seq(length(key)), key)
>17: split.default(seq(length(key)), key)
>
>Enter an environment number, or 0 to exit  Selection: 1
>Error in get(.obj, envir = dump[[.selection]]) : 
>	recursive default argument reference
>
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>  
>