Why does R sometimes stop displaying output?

Sometimes R stops displaying output. I type the number 1, followed by the return key, and nothing appears.

This situation occurred after I pressed the "STOP" icon in the window, which is for stopping long calculations. I'm using R 2.11.0 on a Mac.

Does pressing "STOP" cause R to stop displaying output? How do I get R to di开发者_高级运维splay output again?

Are you running a Sweave script or something else with output redirection? Breaking out of a Sweave script will frequently leave you with no output. Try sink(NULL) and see if that fixes it.

Perhaps you might get some/better help by asking this question on the R-sig-mac mailing list. You can subscribe to it here: https://stat.ethz.ch/mailman/listinfo/r-sig-mac