which.na {splus2R} | R Documentation |
Returns an integer vector describing which values in the input vector, if any, are missing.
which.na(x)
x |
an R object, which should be of mode "logical" , "numeric" , or "complex" . |
an integer vector describing which values in the input vector, if any, are missing.
anyMissing
,
as.rectangular
,
colIds
,
colMaxs
,
colMedians
,
colMins
,
colRanges
,
colStdevs
,
colVars
,
deparseText
,
ifelse1
,
is.numeric.atomic.vector
,
is.rectangular
,
is.missing
,
is.zero
,
lowerCase
,
oldUnclass
,
numCols
,
numRows
,
peaks
,
positions
,
rowIds
,
rowMaxs
,
rmvnorm
,
stdev
,
subscript2d
,
upperCase
,
vecnorm
.
## A non-zero number divided by zero creates ## infinity, zero over zero creates a NaN weird.values <- c(1/0, -20.9/0, 0/0, NA) ## Produces: 3 4. In this example, the which.na ## expression and the subscript expression ## involving is.na should return the same value which.na(weird.values) seq(along=weird.values)[is.na(weird.values)]