| browser {base} | R Documentation |
Interrupt the execution of an expression and allow the inspection of
the environment where browser was called from.
browser()
A call to browser causes a pause in the execution of the
current expression and runs a copy of the R interpreter which has
access to variables local to the environment where the call took
place.
Local variables can be listed with ls, and manipulated with R
expressions typed to this sub-interpreter. The sub-interpreter can be
exited by typing c. Execution then resumes at the statement
following the call to browser.
Typing n causes the step-through-debugger, to start and it is
possible to step through the remainder of the function one line at a
time. In this mode c will continue to the end of the current
context (to the next loop iteration if within a loop).
Typing Q quits the current execution and returns you to the
top-level prompt.
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.
Chambers, J. M. (1998) Programming with Data. A Guide to the S Language. Springer.
debug, and
traceback for the stack on error.