30_is_functions: Is Functions

In vectools: Advanced Vector Toolkit

Description

Functions to test if an object is of a particular class.

Note that ImageArray, GeomArray, NestMatrix and MatrixArray extend ObjectArray, and PartMatrix extends SectMatrix.

Usage

is.ZERO (object)

is.RImage (object)
is.GeomObject (object)

is.Points (object)
is.Line (object)
is.Polygon (object)
is.Text (object)
is.Grid (object)

is.SImage (object)
is.MImage (object)

is.ImageArray (object)
is.ObjectArray (object)
is.GeomArray (object)
is.NestMatrix (object)
is.PartMatrix (object)
is.SectMatrix (object)
is.MatrixArray (object)

Arguments

object

An object to test.

Value

TRUE or FALSE.

Examples

is.ZERO (ZERO)

vectools documentation built on June 7, 2021, 9:08 a.m.