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Check whether an argument is a logical vector of a certain length or a numeric vector in a certain range and issue an appropriate error or warning if not:
checkLogical
throws an error or returns FALSE with a warning
unless x
is a logical vector of exactly the required
length
.
checkNumeric
throws an error or returns FALSE with a warning
unless x
is either NULL or a numeric
vector of at most
length
with x
in the desired range.
checkLogicalInteger
returns a logical vector of exactly
length
unless x
is neither NULL nor logical
of
the required length
nor numeric
with x
in the
desired range.
checkLogical(x, length., warnOnly=FALSE)
checkNumeric(x, lower, upper, length., integer=TRUE, unique=TRUE,
inclusion=c(TRUE,TRUE), warnOnly=FALSE)
checkLogicalInteger(x, length., warnOnly=FALSE)
an object to be checked
The required length for x
if logical
and not NULL or
the maximum length if numeric
.
lower and upper limits for x
.
logical: If true, a numeric
x
must be
integer
.
logical: TRUE if duplicates are NOT allowed in x
.
logical vector of length 2, similar to
link[ifultools]{checkRange}
:
if(inclusion[1]) (lower <= x) else (lower < x)
if(inclusion[2]) (x <= upper) else (x < upper)
logical: If TRUE, violations are reported as warnings, not as errors.
checkLogical
returns a logical vector of the required
length.
, unless it issues an error message.
checkNumeric
returns a numeric vector of at most length.
with all elements between lower
and upper
, and
optionally unique
, unless it issues an error message.
checkLogicalInteger
returns a logical vector of the required
length.
, unless it issues an error message.
1. xName <- deparse(substitute(x)) to use in any required error or warning.
2. if(is.null(x)) handle appropriately: Return FALSE for
checkLogical
, TRUE for checkNumeric
and rep(TRUE,
length.) for checkLogicalInteger
.
3. Check class(x).
4. Check other conditions.
# NOT RUN {
##
## checkLogical
##
checkLogical(NULL, length=3, warnOnly=TRUE)
checkLogical(c(FALSE, TRUE, TRUE), length=4, warnOnly=TRUE)
checkLogical(c(FALSE, TRUE, TRUE), length=3)
##
## checkNumeric
##
checkNumeric(NULL, lower=1, upper=3)
checkNumeric(1:3, 1, 3)
checkNumeric(1:3, 1, 3, inclusion=FALSE, warnOnly=TRUE)
checkNumeric(pi, 1, 4, integer=TRUE, warnOnly=TRUE)
checkNumeric(c(1, 1), 1, 4, warnOnly=TRUE)
checkNumeric(c(1, 1), 1, 4, unique=FALSE, warnOnly=TRUE)
##
## checkLogicalInteger
##
checkLogicalInteger(NULL, 3)
checkLogicalInteger(c(FALSE, TRUE), warnOnly=TRUE)
checkLogicalInteger(1:2, 3)
checkLogicalInteger(2, warnOnly=TRUE)
checkLogicalInteger(c(2, 4), 3, warnOnly=TRUE)
##
## checkLogicalInteger names its calling function
## rather than itself as the location of error detection
## if possible
##
tstFun <- function(x, length., warnOnly=FALSE){
checkLogicalInteger(x, length., warnOnly)
}
tstFun(NULL, 3)
tstFun(4, 3, warnOnly=TRUE)
tstFun2 <- function(x, length., warnOnly=FALSE){
tstFun(x, length., warnOnly)
}
tstFun2(4, 3, warnOnly=TRUE)
# }
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