isa - Determine whether input is object of given class matlab

isa - Determine whether input is object of given class

Syntax

K = isa(obj, 'class_name')

Description

K = isa(obj, 'class_name') returnslogical
1 (true) if obj isof class (or a subclass of) class_name,and logical
0 (false) otherwise.

The argument obj is a MATLAB objector an object of the Java programming language. The argument
class_name isthe name of a MATLAB (predefined or user-defined) or a Java class.Predefined MATLAB classes include

logical	Logical array of true and false values
char	Characters array
numeric	Integer or floating-point array
integer	Signed or unsigned integer array
int8	8-bit signed integer array
uint8	8-bit unsigned integer array
int16	16-bit signed integer array
uint16	16-bit unsigned integer array
int32	32-bit signed integer array
uint32	32-bit unsigned integer array
int64	64-bit signed integer array
uint64	64-bit unsigned integer array
float	Single- or double-precision floating-point array
single	Single-precision floating-point array
double	Double-precision floating-point array
cell	Cell array
struct	Structure array
function_handle	Function handle
'class_name'	MATLAB class or Java class

To check for a sparse array, use
issparse.To check for a complex array, use ~isreal.

Examples

isa(rand(3,4),'double')
ans =
1

The following example creates an instance of the user-defined MATLAB classnamed
polynom. The isa functionidentifies the object as being of the
polynom class.

polynom_obj = polynom([1 0 -2 -5]);
isa(polynom_obj, 'polynom')
ans =
1