Matlab sparse

1. What does sparse do in Matlab?
2. How do you use the sparse command in Matlab?
3. How do I check if a matrix is sparse Matlab?
4. What is sparse double in Matlab?

What does sparse do in Matlab?

sparse is an attribute that you can assign to any two-dimensional MATLAB^® matrix that is composed of double or logical elements. The sparse attribute allows MATLAB to: Store only the nonzero elements of the matrix, together with their indices. Reduce computation time by eliminating operations on zero elements.

How do you use the sparse command in Matlab?

S = sparse( A ) converts a full matrix into sparse form by squeezing out any zero elements. If a matrix contains many zeros, converting the matrix to sparse storage saves memory. S = sparse( m,n ) generates an m -by- n all zero sparse matrix.

How do I check if a matrix is sparse Matlab?

TF = issparse(S) returns logical 1 ( true ) if the storage class of S is sparse and logical 0 ( false ) otherwise.

What is sparse double in Matlab?

Sparse matrices provide efficient storage of double or logical data that has a large percentage of zeros. While full (or dense) matrices store every single element in memory regardless of value, sparse matrices store only the nonzero elements and their row indices.