<< svd

Linear algebra

vecnorm >>

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trace

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Matrix trace.

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Syntax

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res = trace(x)

Input argument

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x

a numeric value: scalar or matrix (double or single)

Output argument

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res

a numeric value: a scalar

Description

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trace(x) computes the trace of x, the sum of the elements along the main diagonal.

Example

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X = [1 0; 0 3];
Y = trace(X)

See also

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eig.

History

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Version	Description
1.0.0	initial version

Author

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Allan CORNET