Problem in function

Posted by Ankit Gajjar on Thursday, 21 June 2012

TRI = DELAUNAY(X,Y) returns a set of triangles such that no data points
    are contained in any triangle's circumcircle. Each row of the numt-by-3
    matrix TRI defines one such triangle and contains indices into the
    vectors X and Y.

But I don't Know How to use Delaunay function in Scilab?So.please help me How can i use Delaunay function?