Matrix trace

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Description

Sum of the main diagonal elements.

Usage

1
Trace(a)

Arguments

a

a square matrix

Details

Sums the elements of the main diagonal of areal or complrx square matrix.

Value

scalar value

Note

The corresponding function in Matlab/Octave is called trace(), but this in R has a different meaning.

See Also

Diag, diag

Examples

1
Trace(matrix(1:16, nrow=4, ncol=4))

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