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bio3d (version 2.4-4)

diag.ind: Diagonal Indices of a Matrix

Description

Returns a matrix of logicals the same size of a given matrix with entries 'TRUE' in the upper triangle close to the diagonal.

Usage

diag.ind(x, n = 1, diag = TRUE)

Value

Returns a matrix of logicals the same size of a given matrix with entries 'TRUE' in the upper triangle close to the diagonal.

Arguments

x

a matrix.

n

the number of elements from the diagonal to include.

diag

logical. Should the diagonal be included?

Author

Barry Grant

Details

Basic function useful for masking elements close to the diagonal of a given matrix.

References

Grant, B.J. et al. (2006) Bioinformatics 22, 2695--2696.

See Also

Examples

Run this code
diag.ind( matrix(,ncol=5,nrow=5), n=3 )

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