C and Fortran API Reference - The MathWorks - (Version JPG) - Page n° 251 - PDF Catalogue | Technical Documentation

C and Fortran API Reference - The MathWorks - #251

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mxSetJc (C and Fortran)

Sparrow(2,1) = 1;

Sparrow(5,1) = 1;

Sparrow(3,2) = 1;

Sparrow(2,3) = 2;

Sparrow(5,3) = 1;

Sparrow(6,3) = 1; Sparrow = sparse(Sparrow);

The contents of the ir, jc,and pr arrays are listed in this table.


Subscript	ir			Comment
(2,1)	1	1	0	Column 1 contains two nonzero elements, with rows designated by ir[0] and ir[1]
(5,1)	4	1	2	Column 2 contains one nonzero element, with row designated by ir[2]
(3,2)	2	1	3	Column 3 contains three nonzero elements, with rows designated by ir[3],ir[4], and ir[5]
(2,3)	1	2	6	There are six nonzero elements in all.
(5,3)	4	1
(6,3)	5	1

As an example of a much sparser mxArray,considera 1000-by-8 sparse mxArray named Spacious containing only three nonzero elements. The ir, pr,andjc arrays contain the values listed in this table.

2-233

Subscript

Comment

Column 1 contains no nonzero elements.