Internal functions: Get the diagonal of a matrix

Description

Get the main diagonal of a matrix, even if the matrix is 1x1.

Usage

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Arguments

x

a matrix

Details

The difference to original diag is that it always gives the diagonal and does nothing flawed in case of a 1x1 matrix or a single number considered as such matrix.

Value

a vector containing the main diagonal entries of x.

Note

Do not use gsi.* functions directly since they are internal functions of the package

Author(s)

K.Gerald v.d. Boogaart http://www.stat.boogaart.de

See Also

gsi.diagGenerate, diag

Examples

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#data(SimulatedAmounts)
#gsi.diagExtract(var(acomp(sa.lognormals,c(1,2))))
#gsi.diagExtract(var(ilr(acomp(sa.lognormals,c(1,2)))))
#gsi.diagExtract(var(ilt(aplus(sa.lognormals,c(1)))))

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