R: Print Warning Messages

warnings {base} | R Documentation

## Print Warning Messages

### Description

`warnings` prints the top-level variable `last.warning` in a pleasing form.

### Usage

    warnings(...)

### Arguments

`...` | arguments to be passed to `cat`.

### References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.

### See Also

`warning`.

### Examples

    ow <- options("warn")
    for(w in -1:1) {
       options(warn = w); cat("\n warn =",w,"\n")
       for(i in 1:3) { cat(i,"..\n"); m <- matrix(1:7, 3,4) }
    }
    warnings()
    options(ow) # reset

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