Description Usage Arguments Value Note Author(s) See Also Examples
Run multiple is.*
tests on a given object: is.na
,
is.numeric
, and many others.
1 |
object |
any R object. |
verbose |
whether negative tests should be included in output. |
A character vector containing positive tests, or when verbose
is TRUE
, a data frame showing all test results.
The following procedure is used to look for valid tests:
Find all objects named is.*
in all loaded
environments.
Discard objects that are not functions.
Include test result only if it is of class "logical"
,
not an NA
, and of length 1.
Arni Magnusson, inspired by demo(is.things)
.
is.na
and is.numeric
are commonly used
tests.
1 2 3 4 |
gdata: read.xls support for 'XLS' (Excel 97-2004) files ENABLED.
gdata: read.xls support for 'XLSX' (Excel 2007+) files ENABLED.
Attaching package: ‘gdata’
The following object is masked from ‘package:stats’:
nobs
The following object is masked from ‘package:utils’:
object.size
The following object is masked from ‘package:base’:
startsWith
[1] "is.atomic" "is.double" "is.finite" "is.numeric" "is.vector"
is
is.array .
is.atomic T
is.call .
is.character .
is.complex .
is.data.frame .
is.double .
is.environment .
is.expression .
is.factor .
is.finite .
is.function .
is.infinite .
is.integer .
is.language .
is.leaf .
is.levelsMap .
is.list .
is.listLevelsMap .
is.logical T
is.matrix .
is.mts .
is.na T
is.na.data.frame T
is.na.POSIXlt T
is.name .
is.nan .
is.null .
is.numeric .
is.numeric_version .
is.numeric.Date .
is.numeric.difftime .
is.numeric.POSIXt .
is.object .
is.object_sizes .
is.ordered .
is.package_version .
is.pairlist .
is.primitive .
is.qr .
is.raster .
is.raw .
is.recursive .
is.relistable .
is.stepfun .
is.symbol .
is.table .
is.ts .
is.tskernel .
is.unsorted .
is.vector T
[1] "is.list" "is.object" "is.recursive"
[1] "is.function" "is.recursive"
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