Test for fixed diagonal

Description

Check if an object has fixed diagonal

Usage

fixdiag(x, ...)
fixdiag(x, ...) <- value
## S3 method for class 'ff'
fixdiag(x, ...)
## Default S3 method:
fixdiag(x, ...)
## S3 method for class 'dist'
fixdiag(x, ...)

Arguments

Details

ff symmetric matrices can be declared to have fixed diagonal at creation time. Compatibility function fixdiag.default returns NULL, fixdiag.dist returns 0.

Value

NULL or the scalar representing the fixed diagonal

Author(s)

Jens Oehlschl<c3><a4>gel

See Also

fixdiag, ff , dist

Examples

  fixdiag(matrix(1:16, 4, 4))
  fixdiag(dist(rnorm(1:4)))

Results