tr | R Documentation |
Give the trace of a squire matrix.
tr(X)
X |
squire matrix. |
It is essentially "sum(diag(X))" but faster.
scalor
First version: Wed Dec 29 16:25:04 CET 2010; Current: Wed Dec 29 16:25:10 CET 2010.
Feng Li, Department of Statistics, Stockholm University, Sweden.
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