ISSPARSE Test for Sparse Matrix

Section: Inspection Functions

Usage

Test a matrix to see if it is sparse or not. The general format for its use is
   y = issparse(x)

This function returns true if x is encoded as a sparse matrix, and false otherwise.

Example

Here is an example of using issparse:
--> a = [1,0,0,5;0,3,2,0]

a = 

 1 0 0 5 
 0 3 2 0 

--> issparse(a)

ans = 

 0 

--> A = sparse(a)

A = 
	Matrix is sparse with 4 nonzeros
--> issparse(A)

ans = 

 1 

--> 
quit