## Inspection Functions

Main Index

- typeof TYPEOF Determine the Type of an Argument
- clear CLEAR Clear or Delete a Variable
- exist EXIST Test for Existence
- end END End Function
- who WHO Describe Currently Defined Variables
- whos WHOS Describe Currently Defined Variables With Memory Usage
- fieldnames FIELDNAMES Fieldnames of a Structure
- where WHERE Get Information on Program Stack
- which WHICH Get Information on Function
- issame ISSAME Test If Two Arrays Are Identical
- isset ISSET Test If Variable Set
- isequal ISEQUAL Test For Matrix Equality
- issparse ISSPARSE Test for Sparse Matrix
- isnan ISNAN Test for Not-a-Numbers
- isinf ISINF Test for infinities
- isreal ISREAL Test For Real Array
- isempty ISEMPTY Test For Variable Empty
- size SIZE Size of a Variable
- isa ISA Test Type of Variable
- iscell ISCELL Test For Cell Array
- iscellstr ISCELLSTR Test For Cell Array of Strings
- ischar ISCHAR Test For Character Array (string)
- isfield ISFIELD Test for Existence of a Structure Field
- ishandle ISHANDLE Test for Graphics Handle
- isinttype ISINTTYPE Test For Integer-type Array
- islogical ISLOGICAL Test for Logical Array
- ismatrix ISMATRIX Test For a 2D Matrix
- isnumeric ISNUMERIC Test for Numeric Array
- isscalar ISSCALAR Test For Scalar
- issquare ISSQUARE Test For a Square matrix
- isstr ISSTR Test For Character Array (string)
- isstruct ISSTRUCT Test For Structure Array
- isvector ISVECTOR Test For a Vector
- length LENGTH Length of an Array
- maxdim MAXDIM Maximum Dimension in Array
- ndims NDIMS Number of Dimensions in Array
- nnz NNZ Number of Nonzeros
- numel NUMEL Number of Elements in an Array