grepColNA: Get attributes of data.frame which contain NAs
In rrMisc: Little Helpers

Description Usage Arguments Details Value Note Author(s) References See Also Examples

Get attributes of data.frame which contain NAs.

1	grepColNA(x, ...)

`x`	data.frame
`...`	Arguments passed to further functions

If the input is a vector, grepColNA() indicates if NAs are present. If the input is a data.frame, grepColNA() returns the colums which contain NAs.

Column names which values contain NAs or indication about NAs.

under continuous developement

Roland Rapold

none

grepColEntries grepColNames grepObjNames grepNotCompleteEntries grepMultipleEntries grepRowNames grepColNegNum grepColFactors

if(require("MASS"))
{
    # load example data
    data(crabs, package="MASS")
    head(crabs)
    print(grepColNA(crabs))
    tt <- crabs
    tt[122,2] <- NA
    tt[22, 4] <- NA
    print(grepColNA(tt))
    print(grepColNA(c(pi, NA, 4.000000, 5.000000, 5, 6, 5, 6)))
}