issparse

Arguments

S

a scilab object

res

boolean: %T if the matrix is a sparse, and %F otherwise/

Description

res = issparse(S) returns %T (true) if S is a sparse boolean or numerical matrix, and %F (false) otherwise.

Examples

sp = sprand(10, 20, 0.1);
if issparse(sp) then
   mprintf("Number of non-zero components: %d", nnz(sp));
end

A = %pi;
if ~issparse(A) then
    disp("A is not a sparse matrix");
end

spb = sp~=0 & sp < 0.5;
issparse(spb)
nnz(spb)

See also

• isreal — check if a variable is stored as a complex matrix
• sparse — sparse matrix definition
• type — returns the type of a Scilab object
• typeof — explicit type or overloading code of an object

History