Using R Debugging Facilities

The R base package includes a number of debugging facilities, and more functional debugging packages are also available. We’ll discuss both the base facilities and other packages, and our extended example will present a fully detailed debugging session.

Single-Stepping with the debug() and browser() Functions

The core of R’s debugging facility consists of the browser. It allows you to single-step through your code, line by line, taking a look around as you go. You can invoke the browser through a call to either the debug() or browser() function.

R’s debugging facility is specific to individual functions. If you believe there is a bug in your function f(), you can make the call debug(f) to set the debug status for the ...

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