SQRSYM Function

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SQRSYM Function

converts a symmetric matrix to a square matrix

SQRSYM( matrix)

where matrix is a symmetric numeric matrix.

The SQRSYM function takes a matrix such as those generated by the SYMSQR function and transforms it back into a square matrix. The elements of the argument are unpacked into the lower triangle of the result and reflected across the diagonal into the upper triangle.

For example, the following statement

   sqr=sqrsym(symsqr({1 2, 3 4}));

which is the same as

   sqr=sqrsym({ 1, 3, 4} );

produces the result

                SQR           2 rows      2 cols    (numeric)

                                     1         3
                                     3         4

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