## Inspection Functions

Main Index

- clear CLEAR Clear or Delete a Variable
- exist EXIST Test for Existence
- fieldnames FIELDNAMES Fieldnames of a Structure
- isa ISA Test Type of Variable
- isempty ISEMPTY Test For Variable Empty
- isfield ISFIELD Test for Existence of a Structure Field
- ishandle ISHANDLE Test for Graphics Handle
- isinf ISINF Test for infinities
- isnan ISNAN Test for Not-a-Numbers
- isset ISSET Test If Variable Set
- issparse ISSPARSE Test for Sparse Matrix
- size SIZE Size of a Variable
- where WHERE Get Information on Program Stack
- which WHICH Get Information on Function
- who WHO Describe Currently Defined Variables