tr: Trace of a matrix.
In tensr: Covariance Inference and Decompositions for Tensor Datasets

Returns the sum of the diagonal elements of a matrix.

tr(X)

`X`	A matrix whose diagonal elements will be added together.

This returns the trace of a matrix, which is just the sum of its diagonal elements.

The sum of the diagonal elements of X.

Peter Hoff.

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X <- matrix(1:4, nrow = 2, ncol = 2)
X
tr(X)

tensr documentation built on May 2, 2019, 2:32 p.m.

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