is.what: Run Multiple is.* Tests on a Given Object

In gdata: Various R Programming Tools for Data Manipulation

Description

Run multiple is.* tests on a given object: is.na, is.numeric, and many others.

Usage

is.what(object, verbose=FALSE)

Arguments

object	any R object.
verbose	whether negative tests should be included in output.

Value

A character vector containing positive tests, or when verbose is TRUE, a data frame showing all test results.

Note

The following procedure is used to look for valid tests:

1. Find all objects named is.* in all loaded environments.

2. Discard objects that are not functions.

3. Include test result only if it is of class "logical", not an NA, and of length 1.

Author(s)

Arni Magnusson, inspired by demo(is.things).

See Also

is.na and is.numeric are commonly used tests.

Examples

is.what(pi)
is.what(NA, verbose=TRUE)
is.what(lm(1~1))
is.what(is.what)

Example output

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"

gdata documentation built on May 2, 2019, 5:49 p.m.